Powered by Deep Web Technologies
Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Thermal Barrier Coatings  

NLE Websites -- All DOE Office Websites (Extended Search)

Thermal Barrier Coatings Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing United States...

2

Catalytic thermal barrier coatings  

Science Conference Proceedings (OSTI)

A catalyst element (30) for high temperature applications such as a gas turbine engine. The catalyst element includes a metal substrate such as a tube (32) having a layer of ceramic thermal barrier coating material (34) disposed on the substrate for thermally insulating the metal substrate from a high temperature fuel/air mixture. The ceramic thermal barrier coating material is formed of a crystal structure populated with base elements but with selected sites of the crystal structure being populated by substitute ions selected to allow the ceramic thermal barrier coating material to catalytically react the fuel-air mixture at a higher rate than would the base compound without the ionic substitutions. Precious metal crystallites may be disposed within the crystal structure to allow the ceramic thermal barrier coating material to catalytically react the fuel-air mixture at a lower light-off temperature than would the ceramic thermal barrier coating material without the precious metal crystallites.

Kulkarni, Anand A. (Orlando, FL); Campbell, Christian X. (Orlando, FL); Subramanian, Ramesh (Oviedo, FL)

2009-06-02T23:59:59.000Z

3

Thermal barrier coating  

SciTech Connect

A thermal barrier coating for hot gas path components of a combustion turbine based on a zirconia-scandia system. A layer of zirconium scandate having the hexagonal Zr.sub.3 Sc.sub.4 O.sub.12 structure is formed directly on a superalloy substrate or on a bond coat formed on the substrate.

Bowker, Jeffrey Charles (Gibsonia, PA); Sabol, Stephen M. (Orlando, FL); Goedjen, John G. (Oviedo, FL)

2001-01-01T23:59:59.000Z

4

Multilayer thermal barrier coating systems  

DOE Patents (OSTI)

The present invention generally describes multilayer thermal barrier coating systems and methods of making the multilayer thermal barrier coating systems. The thermal barrier coating systems comprise a first ceramic layer, a second ceramic layer, a thermally grown oxide layer, a metallic bond coating layer and a substrate. The thermal barrier coating systems have improved high temperature thermal and chemical stability for use in gas turbine applications.

Vance, Steven J. (Orlando, FL); Goedjen, John G. (Oviedo, FL); Sabol, Stephen M. (Orlando, FL); Sloan, Kelly M. (Longwood, FL)

2000-01-01T23:59:59.000Z

5

Thermal barrier coatings  

DOE Patents (OSTI)

This disclosure addresses the issue of providing a metallic-ceramic overlay coating that potentially serves as an interface or bond coat layer to provide enhanced oxidation resistance to the underlying superalloy substrate via the formation of a diffusion barrier regime within the supporting base material. Furthermore, the metallic-ceramic coating is expected to limit the growth of a continuous thermally grown oxide (TGO) layer that has been primarily considered to be the principal cause for failure of existing TBC systems. Compositional compatibility of the metallic-ceramic with traditional yttria-stabilized zirconia (YSZ) top coats is provided to further limit debond or spallation of the coating during operational use. A metallic-ceramic architecture is disclosed wherein enhanced oxidation resistance is imparted to the surface of nickel-based superalloy or single crystal metal substrate, with simultaneous integration of the yttria stabilized zirconia (YSZ) within the metallic-ceramic overlayer.

Alvin, Mary Anne (Pittsburg, PA)

2010-06-22T23:59:59.000Z

6

Thermal barrier coating for alloy systems  

DOE Patents (OSTI)

An alloy substrate is protected by a thermal barrier coating formed from a layer of metallic bond coat and a top coat formed from generally hollow ceramic particles dispersed in a matrix bonded to the bond coat.

Seals, Roland D. (Oak Ridge, TN); White, Rickey L. (Harriman, TN); Dinwiddie, Ralph B. (Knoxville, TN)

2000-01-01T23:59:59.000Z

7

Multilayer Nanoscale Thermal Barrier Coatings  

Science Conference Proceedings (OSTI)

Advanced high-efficiency gas turbines require thermal barrier coatings (TBCs) with low thermal conductivity and excellent thermal-cycling resistance. The multilayer TBC developed in this project has a thermal conductivity about half that of conventional TBCs and also rejects up to 70 percent of incoming radiant energy.

1999-05-26T23:59:59.000Z

8

Combustion chemical vapor deposited coatings for thermal barrier coating systems  

DOE Green Energy (OSTI)

The new deposition process, combustion chemical vapor deposition, shows a great deal of promise in the area of thermal barrier coating systems. This technique produces dense, adherent coatings, and does not require a reaction chamber. Coatings can therefore be applied in the open atmosphere. The process is potentially suitable for producing high quality CVD coatings for use as interlayers between the bond coat and thermal barrier coating, and/or as overlayers, on top of thermal barrier coatings. In this report, the evaluation of alumina and ceria coatings on a nickel-chromium alloy is described.

Hampikian, J.M.; Carter, W.B. [Georgia Institute of Technology, Atlanta, GA (United States). School of Materials Science and Engineering

1995-12-31T23:59:59.000Z

9

Multilayer Thermal Barrier Coatings: Interplay Among Coating ...  

Science Conference Proceedings (OSTI)

... and resistant to environmental damage from ingested sand particles ( categorized ... A Study on the Hot Corrosion Resistance of Metal-cemet-glass Coating on ...

10

Multilayer Thermal Barrier Coatings: Interplay Among Coating ...  

Science Conference Proceedings (OSTI)

Cold Sprayed Aluminum Based Glassy Coatings for Improved Corrosion and Wear ... Effect of Thermal Cycling and Sliding on the Structure of Cu-Nb Nanolaminates ... Based on Oscillatory Voltage Wave Forms for Insulating Film Depositions.

11

Advanced Thermal Barrier Coating System Development  

DOE Green Energy (OSTI)

The objectives of the program are to provide an improved Thermal Barrier Coating (TBC) system with increased temperature capability and improved reliability relative to current state of the art TBC systems. The development of such a coating system is essential to the ATS engine meeting its objectives. The base program consists of three phases: Phase I: Program Planning - Complete; Phase II: Development; and Phase III: Selected Specimen - Bench Test Work is being performed in Phase II and III of the program.

NONE

1999-03-31T23:59:59.000Z

12

Barrier Coatings for Refractory Metals and Superalloys  

SciTech Connect

In the closed working fluid loop of the proposed Prometheus space nuclear power plant (SNPP), there is the potential for reaction of core and plant structural materials with gas phase impurities and gas phase transport of interstitial elements between superalloy and refractory metal alloy components during service. Primary concerns are surface oxidation, interstitial embrittlement of refractory metals and decarburization of superalloys. In parallel with kinetic investigations, this letter evaluates the ability of potential coatings to prevent or impede communication between reactor and plant components. Key coating requirements are identified and current technology coating materials are reviewed relative to these requirements. Candidate coatings are identified for future evaluation based on current knowledge of design parameters and anticipated environment. Coatings were identified for superalloys and refractory metals to provide diffusion barriers to interstitial transport and act as reactive barriers to potential oxidation. Due to their high stability at low oxygen potential, alumina formers are most promising for oxidation protection given the anticipated coolant gas chemistry. A sublayer of iridium is recommended to provide inherent diffusion resistance to interstitials. Based on specific base metal selection, a thin film substrate--coating interdiffusion barrier layer may be necessary to meet mission life.

SM Sabol; BT Randall; JD Edington; CJ Larkin; BJ Close

2006-02-23T23:59:59.000Z

13

Deposition of Graded Thermal Barrier Coatings for Gas Turbine ...  

Wind Energy Industrial Technologies Advanced Materials Deposition of Graded Thermal Barrier Coatings for Gas Turbine Blades Sandia National ...

14

Ion beam assisted deposition of thermal barrier coatings ...  

... Energy Innovation Portal on Google; Bookmark Ion beam assisted deposition of thermal barrier coatings - Energy Innovation Portal on Delicious ...

15

Pratt and Whitney thermal barrier coatings  

DOE Green Energy (OSTI)

Thermal barrier coatings (TBCs) will be used to achieve the objectives of the Advanced Turbine Systems (ATS) program. They are used in aircraft engines and have accumulated millions upon millions of reliable hours. Differences in the duty cycles of the aircraft and industrial gas turbines are recognized as is the marked differences in environmental operational envelope. At the completion of this program the TBCs best suited to meet the needs of the ATS program will have been identified, tested, and confirmed.

Bornstein, N. [United Technologies Research Center, East Hartford, CT (United States); Marcin, J. [Pratt and Whitney Aircraft, East Hartford, CT (United States)

1995-12-31T23:59:59.000Z

16

Thermal barrier coating having high phase stability  

DOE Patents (OSTI)

A device (10) comprising a substrate (22) having a deposited ceramic thermal barrier coating characterized by a microstructure having gaps (28) where the thermal barrier coating comprises a first thermal barrier layer (40), and a second thermal barrier layer (30) with a pyrochlore crystal structure having a chemical formula of A.sup.n+.sub.2-x B.sup.m+.sub.2+x O.sub.7-y, where A is selected from the group of elements consisting of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and mixtures thereof, where B is selected from the group of elements consisting of Zr, Hf, Ti and mixtures thereof, where n and m are the valence of A and B respectively, and for -0.5.ltoreq.x.ltoreq.0.5, ##EQU1## and excluding the following combinations for x=0, y=0: A=La and B=Zr; A=La and B=Hf; A=Gd and B=Hf; and A=Yb and B=Ti.

Subramanian, Ramesh (Oviedo, FL)

2002-01-01T23:59:59.000Z

17

Thermal barrier coating resistant to sintering  

DOE Patents (OSTI)

A device (10) having a ceramic thermal barrier coating layer (16) characterized by a microstructure having gaps (18) with a sintering inhibiting material (22) disposed on the columns (20) within the gaps (18). The sintering resistant material (22) is stable over the range of operating temperatures of the device (10) and is not soluble with the underlying ceramic layer (16). For a YSZ ceramic layer (16) the sintering resistant layer (22) may preferably be aluminum oxide or yttrium aluminum oxide, deposited as a continuous layer or as nodules.

Subramanian, Ramesh (Orlando, FL); Sabol, Stephen M. (Orlando, FL)

2001-01-01T23:59:59.000Z

18

Damage Evolution in Thermal Barrier Coatings with Thermal Cycling  

Science Conference Proceedings (OSTI)

Abstract Scope, Thermal barrier coatings typically fail on cooling after prolonged thermal cycling by the growth of sub-critical interface separations. Observations ...

19

Degradation of Thermal Barrier Coatings from Deposits and Its...  

NLE Websites -- All DOE Office Websites (Extended Search)

Degradation of Thermal Barrier Coatings from Deposits and Its Mitigation-The Ohio State University Background When coal derived synthesis gas (syngas) is used in place of natural...

20

Thermal Barrier Coatings for Resistance Against Attack by Molten ...  

Science Conference Proceedings (OSTI)

Presentation Title, Thermal Barrier Coatings for Resistance Against Attack by Molten Silicate Deposits from CMAS Sand, Volcanic Ash, or Coal Fly Ash Ingested ...

Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Thermal barrier coatings for turbine components  

DOE Patents (OSTI)

A turbine component, such as a turbine blade having a metal substrate (22) is coated with a metal MCrAlY alloy layer (24) and then a thermal barrier layer (20) selected from LaAlO.sub.3, NdAlO.sub.3, La.sub.2 Hf.sub.2 O.sub.7, Dy.sub.3 Al.sub.5 O.sub.12, HO.sub.3 Al.sub.3 O.sub.12, ErAlO.sub.3, GdAlO.sub.3, Yb.sub.2 Ti.sub.2 O.sub.7, LaYbO.sub.3, Gd.sub.2 Hf.sub.2 O.sub.7 or Y.sub.3 Al.sub.5 O.sub.12.

Subramanian, Ramesh (Oviedo, FL); Sabol, Stephen M. (Orlando, FL); Goedjen, John G. (Oviedo, FL); Sloan, Kelly M. (Bethesda, MD); Vance, Steven J. (Orlando, FL)

2002-01-01T23:59:59.000Z

22

Advanced thermal barrier coating system development. Technical progress report  

Science Conference Proceedings (OSTI)

This report describes work to develop new thermal barrier coating systems, which will be essential to the operation of the ATS engine which is under development. Work is at the stage of process improvement and bond coat improvement, along with proof testing of the coatings under thermal conditions typical of what can be expected in the ATS engine.

NONE

1998-03-16T23:59:59.000Z

23

Superior Thermal Barrier Coatings for Industrial Gas-Turbine...  

NLE Websites -- All DOE Office Websites (Extended Search)

070103 (36 Months Duration) 546,000 Total Contract Value (546,000 DOE) Superior Thermal Barrier Coatings for Industrial Gas-Turbine Engines Using a Novel Solution-Precursor...

24

Thermomechanical behavior of plasma-sprayed zirconia thermal barrier coatings.  

SciTech Connect

The effect of coating porosity and thickness on the resistance to damage of yttria stabilized zirconia thermal barrier coatings in an oxidizing environment by thermal cycling was evaluated. Hardness and elastic modulus of an as-processed porous coating were lower than those of a dense coating and the porous coating failed after fewer thermal cycles. Similarly, specimen with a thicker coating failed after fewer thermal cycles than specimen with a thinner coating. The earlier failure of the porous coating is due to lower fracture toughness and enhanced oxidation of the coating/substrate interface, whereas, the earlier failure of the thick coating is due to higher thermal transient stresses that developed in the coating during thermal cycling. Generally, an increase in coating density led to initial increase in both hardness and elastic modulus with increasing thermal cycles. However, hardness and density gradually decreased as the number of thermal cycles increase because of microcracks formation and growth. Microscopic observations indicated that the formation of multiple microcracks and their subsequent growth and coalescence led to final coating failure.

Singh, J. P.

1998-04-01T23:59:59.000Z

25

Bond strength and stress measurements in thermal barrier coatings  

DOE Green Energy (OSTI)

Thermal barrier coatings have been used extensively in aircraft gas turbines for more than 15 years to insulate combustors and turbine vanes from the hot gas stream. Plasma sprayed thermal barrier coatings (TBCs) provide metal temperature reductions as much as 300{degrees}F, with improvements in durability of two times or more being achieved. The introduction of TBCs deposited by electron beam physical vapor deposition (EB-PVD) processes in the last five years has provided a major improvement in durability and also enabled TBCs to be applied to turbine blades for improved engine performance. This program evaluates the bond strength of yttria stabilized zirconia coatings with MCrAlY and Pt-Al bond coats utilizing diffraction and fluorescence methods.

Gell, M.; Jordan, E.

1995-12-31T23:59:59.000Z

26

In Situ Temporary Repair of Thermal Barrier Coatings  

Science Conference Proceedings (OSTI)

The durability of thermal barrier coatings (TBCs) on combustion turbine blades and vanes is a critical issue in the power generation industry. Degradation of TBCs occur by the spallation of the ceramic layer — partially stabilized zirconia (PSZ) — that resides on the Al2O3-covered MCrAlY bondcoat. In the event of such local failures of the TBC, a quick in-situ technique to repair the coating would be desirable.

2005-03-31T23:59:59.000Z

27

Interface Science of Thermal Barrier Coatings  

SciTech Connect

The drive for greater efficiency in propulsion and industrial/power production machinery has pushed metallurgy to develop ever better alloys and taken existing metallic components to their reliability threshold. Nowhere is that better illustrated than in turbine engine materials. The nickel-based superalloys currently in use for the most demanding areas of the engines melt at 1230-1315 aC and yet see combustion environments >1600 aC. The result is that these components require thermal protection to avoid failure from phenomena such as melting, creep, oxidation, thermal fatigue, and so on [1]. The stakes are high as the equipment must remain reliable for thousands of take-offs and landings for aircraft turbine engines, and up to 40,000 hours of operation in power generating land-based gas turbines [2, 3]. One of the most critical items that see both the greatest temperatures and experience the highest stresses is the hot-section turbine blades. Two strategies have been adopted to help the superalloy turbine blades survive the demanding environment: Active air cooling and ceramic thermal protection coatings, which together can reduce metal surface temperatures by >300 aC.[2]. The combination of turbine blade external film cooling and internal air cooling requires an exceptionally complex structure with flow passages and sets of small holes in the blades where air bled from a matching stage of the compressor is directed over the surface. Stecura [4] was among the first to describe a successful coating system, and today s the ceramic insulating layer alone is credited with reducing metal temperatures as much as 165 aC [1, 5].

Besmann, Theodore M [ORNL

2009-01-01T23:59:59.000Z

28

New Barrier Coating Materials for PV Module Backsheets: Preprint  

DOE Green Energy (OSTI)

This conference paper describes the high moisture barrier high resistivity coatings on polyethylene terepthalate (PET) have been fabricated and characterized for use in PV module back sheet applications. These thin film barriers exhibit water vapor transmission rates (WVTR) as low as 0.1 g/m2-day at 37.8 C and have shown excellent adhesion (> 10 N/mm) to both ethylene vinyl acetate (EVA) and PET even after filtered xenon arc lamp UV exposure. The WVTR and adhesion values for this construction are compared to and shown to be superior to candidate polymeric backsheet materials.

Barber, G. D.; Jorgensen, G. J.; Terwilliger, K.; Glick, S. H.; Pern, J.; McMahon, T. J.

2002-05-01T23:59:59.000Z

29

Ceramic thermal barrier coating for rapid thermal cycling applications  

DOE Patents (OSTI)

A thermal barrier coating for metal articles subjected to rapid thermal cycling includes a metallic bond coat deposited on the metal article, at least one MCrAlY/ceramic layer deposited on the bond coat, and a ceramic top layer deposited on the MCrAlY/ceramic layer. The M in the MCrAlY material is Fe, Ni, Co, or a mixture of Ni and Co. The ceramic in the MCrAlY/ceramic layer is mullite or Al.sub.2 O.sub.3. The ceramic top layer includes a ceramic with a coefficient of thermal expansion less than about 5.4.times.10.sup.-6 .degree.C.sup.-1 and a thermal conductivity between about 1 J sec.sup.-1 m.sup.-1 .degree.C.sup.-1 and about 1.7 J sec.sup.-1 m.sup.-1 .degree.C.sup.-1.

Scharman, Alan J. (Hebron, CT); Yonushonis, Thomas M. (Columbus, IN)

1994-01-01T23:59:59.000Z

30

Residual stress analysis of multilayer environmental barrier coatings.  

DOE Green Energy (OSTI)

Silicon-based ceramics (SiC, Si{sub 3}N{sub 4}) are promising materials systems for high-temperature structural applications in gas turbine engines. However, the silica layer that forms on these materials is susceptible to attack from water vapor present in combustion environments. To protect against this degradation, environmental barrier coatings (EBCs) have been developed to shield the underlying substrate and prevent degradation. Here we report on elastic and thermal properties, as well as internal stresses of candidate multilayer coatings, as measured in situ using microfocused high-energy X-rays in a transmission diffraction geometry. Doped aluminosilicate coatings were investigated for their stability on a SiC/SiC melt-infiltrated substrate. The coatings consisted of a Ba{sub 1-x}Sr{sub x}Al{sub 2}Si{sub 2}O{sub 8} topcoat with a mullite or mullite+SrAl{sub 2}Si{sub 2}O{sub 8} interlayer, and a silicon bond coat. A numerical model was used to compare the stress results with an ideal coating system. Experiments were carried out on as-sprayed and heat-treated samples in order to analyze the strain and phase evolution as a function of multilayer depth and temperature. The phase transformation of the topcoat promoted healing of cracks in the EBC and reduced stresses in the underlying layers and the addition of SAS to the interlayer reduced stresses in thermally cycled coatings, but did not stop cracks from forming.

Harder, B.; Almer, J.; Weyant, C.; Lee, K.; Faber, K.; Northwestern Univ.; Rolls-Royce Corp.

2009-02-01T23:59:59.000Z

31

Advanced thermal barrier coating system development. Technical progress report, September 1, 1997--November 30, 1997  

SciTech Connect

The objectives of this project were to provide an improved thermal barrier coating system with increased temperature capability and reliability. This report describes bond coat development, manufacturing, nondestructive evaluation, maintenance, and repair, and bench testing.

1997-12-12T23:59:59.000Z

32

Thermal Barrier Coatings Resistant to Attack by Molten Fly Ash in ...  

Science Conference Proceedings (OSTI)

Presentation Title, Thermal Barrier Coatings Resistant to Attack by Molten Fly Ash in Integrated Gas Combined Cycle Turbine Engines. Author(s), Andrew D.

33

Nondestructive evaluation of environmental barrier coatings in CFCC combustor liners.  

SciTech Connect

Advanced combustor liners fabricated of SiC/SiC continuous fiber-reinforced ceramic composite (CFCC) and covered with environmental barrier coatings (EBCs) have been successfully tested in Solar Turbines Inc. field engines. The primary goal for the CFCC/EBC liners is to reach a 30,000-h lifetime. Because the EBCs, when applied on the hot surfaces of liners, protect the underlying CFCC from oxidation damage, their performance is critical in achieving the lifetime goal. To determine CFCC/EBC liner condition and assess operating damage, the liners were subjected to nondestructive evaluation (NDE) during various processing stages, as well as before and after the engine test. The NDE techniques included pulsed infrared thermal imaging, air-coupled ultrasonic scanning, and X-ray computerized tomography. It was found that EBC damage and spallation depend on the condition of the CFCC material. The NDE results and correlations with destructive examination are discussed.

Sun, J. G.; Benz, J.; Ellingson, W. A.; Kimmel, J. B.; Price, J. R.; Energy Technology; Solar Turbines, Inc

2007-01-01T23:59:59.000Z

34

In-situ formation of multiphase air plasma sprayed barrier coatings for turbine components  

DOE Patents (OSTI)

A turbine component (10), such as a turbine blade, is provided which is made of a metal alloy (22) and a base, planar-grained thermal barrier layer (28) applied by air plasma spraying on the alloy surface, where a heat resistant ceramic oxide overlay material (32') covers the bottom thermal barrier coating (28), and the overlay material is the reaction product of the precursor ceramic oxide overlay material (32) and the base thermal barrier coating material (28).

Subramanian, Ramesh (Oviedo, FL)

2001-01-01T23:59:59.000Z

35

FARADAYIC ElectroPhoretic Deposition of YSZ for Use in Thermal Barrier Coatings - Faraday Technology  

NLE Websites -- All DOE Office Websites (Extended Search)

FARADAYIC ElectroPhoretic Deposition FARADAYIC ElectroPhoretic Deposition of YSZ for Use in Thermal Barrier Coatings-Faraday Technology Background Thermal barrier coatings (TBCs) are employed to protect gas turbine engine components. These coating systems provide thermal, oxidation, and mechanical protection; reduce thermal gradients; and lower the metal substrate surface temperature, extending the life of the engine components. Faraday Technology, Inc. (Faraday) is developing a new manufacturing process, the

36

Degradation of Thermal Barrier Coatings from Deposits and Its Mitigation  

SciTech Connect

Ceramic thermal barrier coatings (TBCs) used in gas-turbine engines afford higher operating temperatures, resulting in enhanced efficiencies and performance. However, in the case of syngas-fired engines, fly ash particulate impurities that may be present in syngas can melt on the hotter TBC surfaces and form glassy deposits. These deposits can penetrate the TBCs leading to their failure. In experiments using lignite fly ash to simulate these conditions we show that conventional TBCs of composition 93wt% ZrO{sub 2} + 7wt% Y{sub 2}O{sub 3} (7YSZ) fabricated using the air plasma spray (APS) process are completely destroyed by the molten fly ash. The molten fly ash is found to penetrate the full thickness of the TBC. The mechanisms by which this occurs appear to be similar to those observed in degradation of 7YSZ TBCs by molten calcium-magnesium-aluminosilicate (CMAS) sand and by molten volcanic ash in aircraft engines. In contrast, APS TBCs of Gd{sub 2}Zr{sub 2}O{sub 7} composition are highly resistant to attack by molten lignite fly ash under identical conditions, where the molten ash penetrates ~25% of TBC thickness. This damage mitigation appears to be due to the formation of an impervious, stable crystalline layer at the fly ash/Gd{sub 2}Zr{sub 2}O{sub 7} TBC interface arresting the penetrating moltenfly- ash front. Additionally, these TBCs were tested using a rig with thermal gradient and simultaneous accumulation of ash. Modeling using an established mechanics model has been performed to illustrate the modes of delamination, as well as further opportunities to optimize coating microstructure. Transfer of the technology was developed in this program to all interested parties.

Padture, Nitin

2011-12-31T23:59:59.000Z

37

Degradation of Thermal Barrier Coatings from Deposits and Its Mitigation  

Science Conference Proceedings (OSTI)

Ceramic thermal barrier coatings (TBCs) used in gas-turbine engines afford higher operating temperatures, resulting in enhanced efficiencies and performance. However, in the case of syngas-fired engines, fly ash particulate impurities that may be present in syngas can melt on the hotter TBC surfaces and form glassy deposits. These deposits can penetrate the TBCs leading to their failure. In experiments using lignite fly ash to simulate these conditions we show that conventional TBCs of composition 93wt% ZrO{sub 2} + 7wt% Y{sub 2}O{sub 3} (7YSZ) fabricated using the air plasma spray (APS) process are completely destroyed by the molten fly ash. The molten fly ash is found to penetrate the full thickness of the TBC. The mechanisms by which this occurs appear to be similar to those observed in degradation of 7YSZ TBCs by molten calcium-magnesium-aluminosilicate (CMAS) sand and by molten volcanic ash in aircraft engines. In contrast, APS TBCs of Gd{sub 2Zr{sub 2}O{sub 7} composition are highly resistant to attack by molten lignite fly ash under identical conditions, where the molten ash penetrates ~25% of TBC thickness. This damage mitigation appears to be due to the formation of an impervious, stable crystalline layer at the fly ash/Gd{sub 2}Zr{sub 2}O{sub 7} TBC interface arresting the penetrating moltenfly- ash front. Additionally, these TBCs were tested using a rig with thermal gradient and simultaneous accumulation of ash. Modeling using an established mechanics model has been performed to illustrate the modes of delamination, as well as further opportunities to optimize coating microstructure. Transfer of the technology was developed in this program to all interested parties.

Nitin Padture

2011-12-31T23:59:59.000Z

38

Barrier Coatings for Thin Film Solar Cells: Final Subcontract Report, September 1, 2002 -- January 30, 2008  

DOE Green Energy (OSTI)

This program has involved investigations of the stability of CdTe and copper-indium-gallium-diselenide (CIGS) solar cells under damp heat conditions and effects of barrier coatings.

Olsen, L. C.

2010-03-01T23:59:59.000Z

39

Thermal barrier and overlay coating systems comprising composite metal/metal oxide bond coating layers  

DOE Patents (OSTI)

The present invention generally describes multilayer coating systems comprising a composite metal/metal oxide bond coat layer. The coating systems may be used in gas turbines.

Goedjen, John G. (Oviedo, FL); Sabol, Stephen M. (Orlando, FL); Sloan, Kelly M. (Longwood, FL); Vance, Steven J. (Orlando, FL)

2001-01-01T23:59:59.000Z

40

Functionally gradient materials for thermal barrier coatings in advanced gas turbine systems  

DOE Green Energy (OSTI)

New designs for advanced gas turbine engines for power production are required to have higher operating temperatures in order to increase efficiency. However, elevated temperatures will increase the magnitude and severity of environmental degradation of critical turbine components (e.g. combustor parts, turbine blades, etc.). To offset this problem, the usage of thermal barrier coatings (TBCs) has become popular by allowing an increase in maximum inlet temperatures for an operating engine. Although thermal barrier technology is over thirty years old, the principle failure mechanism is the spallation of the ceramic coating at or near the ceramic/bond coat interface. Therefore, it is desirable to develop a coating that combines the thermal barrier qualities of the ceramic layer and the corrosion protection by the metallic bond coat without the detrimental effects associated with the localization of the ceramic/metal interface to a single plane.

Banovic, S.W.; Chan, H.M.; Marder, A.R. [Lehigh Univ., Bethlehem, PA (United States)] [and others

1995-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

In-situ formation of multiphase electron beam physical vapor deposited barrier coatings for turbine components  

DOE Patents (OSTI)

A turbine component (10), such as a turbine blade, is provided which is made of a metal alloy (22) and a base columnar thermal barrier coating (20) on the alloy surface, where a heat resistant ceramic oxide sheath material (32' or 34') covers the columns (28), and the sheath material is the reaction product of a precursor ceramic oxide sheath material and the base thermal barrier coating material.

Subramanian, Ramesh (Oviedo, FL)

2001-01-01T23:59:59.000Z

42

Low-Conductivity Thermal Barrier Coating for Gas Turbines: Material Testing Status  

Science Conference Proceedings (OSTI)

Advanced gas turbines rely on air-cooled components protected by ceramic thermal barrier coatings to survive increasingly high operating temperatures. A new generation of coatings offers lower thermal conductivity, potentially further reducing component heat loading, which can improve durability, lower life cycle cost, and enable longer range efficiency gains. Testing improved coatings is a necessary step towards field demonstration.BackgroundAs gas turbine ...

2012-12-31T23:59:59.000Z

43

Some effects of metallic substrate composition on degradation of thermal barrier coatings  

SciTech Connect

Comparisons have been made in laboratory isothermal and cyclic oxidation tests of the degradation of oxide scales grown on single crystal superalloy substrates and bond coating alloys intended for use in thermal barrier coatings systems. The influence of desulfurization of the superalloy and bond coating, of reactive element addition to the bond coating alloy, and of oxidation temperature on the spallation behavior of the alumina scales formed was assessed from oxidation kinetics and from SEM observations of the microstructure and composition of the oxide scales. Desulfurization of nickel-base superalloy (in the absence of a Y addition) resulted in an increase in the lifetime of a state-of-the-art thermal barrier coating applied to it compared to a Y-free, non-desulfurized version of the alloy. The lifetime of the same ceramic coating applied without a bond coating to a non-desulfurized model alloy that formed an ideal alumina scale was also found to be at least four times longer than on the Y-doped superalloy plus state-of-the-art bond coating combination. Some explanations are offered of the factors controlling the degradation of such coatings.

Wright, I.G.; Pint, B.A.; Lee, W.Y.; Alexander, K.B.; Pruessner, K.

1997-12-31T23:59:59.000Z

44

Advanced thermal barrier coating system development: Technical progress report  

DOE Green Energy (OSTI)

Objectives are to provide an improved TBC system with increased temperature capability and improved reliability. Such coating systems are essential to the ATS engine (gas turbine) meeting its objectives.

NONE

1996-12-11T23:59:59.000Z

45

Thermal Barrier Coatings for Low Emission, High Efficiency Diesel Engine Applications  

DOE Green Energy (OSTI)

Thermal efficiencies of 54% have been demonstrated by single cylinder engine testing of advanced diesel engine concepts developed under Department of Energy funding. In order for these concept engines to be commercially viable, cost effective and durable systems for insulating the piston, head, ports and exhaust manifolds will be required. The application and development of new materials such as thick thermal barrier coating systems will be key to insulating these components. Development of test methods to rapidly evaluate the durability of coating systems without expensive engine testing is a major objective of current work. In addition, a novel, low cost method for producing thermal barrier coated pistons without final machining of the coating has been developed.

M. B. Beardsley; P. G. Happoldt; K.C. Kelley; E. F. Rejda; D. F. Socie

1999-04-26T23:59:59.000Z

46

A model for residual stress evolution in air-plasma-sprayed zirconia thermal barrier coatings  

Science Conference Proceedings (OSTI)

Ruby fluorescence spectroscopy indicates that residual stress in air-plasma-sprayed zirconia thermal barrier coatings is a function of the local interface geometry. The stress profile of a simulated rough interface characterized by ``peaks'' and ``valleys'' was modeled with a finite-element approach that accounted for thermal mismatch, oxide scale growth, and top coat sintering. Dependence of the stress profile on interface geometry and microstructure was investigated, and the results were compared with measured stresses.

Nair, B. G.; Singh, J. P.; Grimsditch, M.

2000-02-28T23:59:59.000Z

47

Advanced Thermal Barrier Coating System Development. Technical progress report  

Science Conference Proceedings (OSTI)

The objectives of the program are to provide an improved TBC system with increased temperature capability and improved reliability relative to current state of the art TBC systems. The development of such a coating system is essential to the ATS engine meeting its objectives. The base program consists of three phases: Phase I: Program Planning - Complete; Phase II: Development; and Phase III: Selected Specimen - Bench Test. Work is being performed in Phase II and III of the program.

None

1999-10-15T23:59:59.000Z

48

Advanced Thermal Barrier Coating System Development. Technical progress report  

Science Conference Proceedings (OSTI)

The objectives of the program are to provide an improved TBC system with increased temperature capability and improved reliability relative to current state of the art TBC systems. The development of such a coating system is essential to the ATS engine meeting its objectives. The base program consists of three phases: Phase I: Program Planning - Complete; Phase II: Development - Complete; and Phase III: Selected Specimen - Bench Test. Work was performed in Phase II and III of the program during the reporting period.

None

2000-01-13T23:59:59.000Z

49

Advanced Thermal Barrier Coating System Development. Technical progress report  

Science Conference Proceedings (OSTI)

The objectives of the program are to provide an improved TBC system with increased temperature capability and improved reliability relative to current state of the art TBC systems. The development of such a coating system is essential to the ATS engine meeting its objectives. The base program consists of three phases: Phase I: Program Planning - Complete; Phase II: Development; and Phase III: Selected Specimen - Bench Test. Work is being performed in Phase II and III of the program.

None

1998-09-21T23:59:59.000Z

50

Method for improving the oxidation-resistance of metal substrates coated with thermal barrier coatings  

DOE Patents (OSTI)

A method for providing a protective coating on a metal-based substrate is disclosed. The method involves the application of an aluminum-rich mixture to the substrate to form a discontinuous layer of aluminum-rich particles, followed by the application of a second coating over the discontinuous layer of aluminum-rich particles. Aluminum diffuses from the aluminum-rich layer into the substrate, and into any bond coat layer which is subsequently applied. Related articles are also described.

Thompson, Anthony Mark (Niskayuna, NY); Gray, Dennis Michael (Delanson, NY); Jackson, Melvin Robert (Niskayuna, NY)

2002-01-01T23:59:59.000Z

51

Diffusion Barrier Properties of Nitride-Based Coatings on Fuel Cladding  

SciTech Connect

In this work titanium nitride (TiN) and zirconium nitride (ZrN) coatings are proposed as diffusion barriers between stainless steel nuclear fuel cladding and lanthanide fission products. TiN and ZrN have been coated as barrier materials between pure Fe and Ce, i.e. diffusion couples of Fe/TiN/Ce and Fe/ZrN/Ce, annealed up to a temperature of 600 degrees C, and compared to the diffusion behavior of uncoated Fe/Ce. Backscattered electron images and electron dispersive X-ray spectroscopy measurements confirm that, with a 500 nm TiN or ZrN layer, no obvious diffusion is observed between Fe and Ce. Basic diffusion characteristics of the Fe/Ce couple have also been measured and compared with the TiN and ZrN coated ones. The results strongly advocate that TiN and ZrN coatings provide reliable diffusion barrier characteristics against Ce and possibly other lanthanide fission products.

Fauzia Khatkhatay; Jie Jian; Liang Jiao; Qing Su; Jian Gan; James I. Cole; Haiyan Wang

2013-12-01T23:59:59.000Z

52

Thick Thermal Barrier Coatings (TTBCs) for Low Emission, High Efficiency Diesel Engine Components  

SciTech Connect

The objective of this program was to advance the fundamental understanding of thick thermal barrier coating (TTBC) systems for application to low heat rejection diesel engine combustion chambers. Previous reviews of thermal barrier coating technology concluded that the current level of understanding of coating system behavior is inadequate and the lack of fundamental understanding may impede the application of thermal barrier coating to diesel engines.(1) Areas of TTBC technology examined in this program include powder characteristics and chemistry; bond coating composition, coating design, microstructure and thickness as they affect properties, durability, and reliability; and TTBC "aging" effects (microstructural and property changes) under diesel engine operating conditions. Fifteen TTBC ceramic powders were evaluated. These powders were selected to investigate the effects of different chemistries, different manufacturing methods, lot-to-lot variations, different suppliers and varying impurity levels. Each of the fifteen materials has been sprayed using 36 parameters selected by a design of experiments (DOE) to determine the effects of primary gas (Ar and N2), primary gas flow rate, voltage, arc current, powder feed rate, carrier gas flow rate, and spraying distance. The deposition efficiency, density, and thermal conductivity of the resulting coatings were measured. A coating with a high deposition efficiency and low thermal conductivity is desired from an economic standpoint. An optimum combination of thermal conductivity and disposition efficiency was found for each lot of powder in follow-on experiments and disposition parameters were chosen for full characterization.(2) Strengths of the optimized coatings were determined using 4-point bending specimens. The tensile strength was determined using free-standing coatings made by spraying onto mild steel substrates which were subsequently removed by chemical etching. The compressive strengths of the coatings were determined using composite specimens of ceramic coated onto stainless steel substrates, tested with the coating in compression and the steel in tension. The strength of the coating was determined from an elastic bi-material analysis of the resulting failure of the coating in compression.(3) Altough initial comparisons of the materials would appear to be straight forward from these results, the results of the aging tests of the materials are necessary to insure that trends in properties remain after long term exposure to a diesel environment. Some comparisons can be made, such as the comparison between for lot-to-lot variation. An axial fatigue test to determine the high cycle fatigue behavior of TTBCs was developed at the University of Illinois under funding from this program.(4) A fatigue test apparatus has been designed and initial work performed which demonstrates the ability to provide a routine method of axial testing of coating. The test fixture replaces the normal load frame and fixtures used to transmit the hydraulic oil loading to the sample with the TTBC specimen itself. The TTBC specimen is a composite metal/coating with stainless steel ends. The coating is sprayed onto a mild steel center tube section onto which the stainless steel ends are press fit. The specimen is then machined. After machining, the specimen is placed in an acid bath which etches the mild steel away leaving the TTBC attached to the the stainless steel ends. Plugs are then installed in the ends and the composite specimen loaded in the test fixture where the hydraulic oil pressurizes each end to apply the load. Since oil transmits the load, bending loads are minimized. This test fixture has been modified to allow piston ends to be attached to the specimen which allows tensile loading as well as compressive loading of the specimen. In addition to the room temperature data, specimens have been tested at 800 Degrees C with the surprising result that at high temperature, the TTBC exhibits much higher fatigue strength. Testing of the TTBC using tension/compression cycling has been con

M. Brad Beardsley, Caterpillar Inc.; Dr. Darrell Socie, University of Illinois; Dr. Ed Redja, University of Illinois; Dr. Christopher Berndt, State University of New York at Stony Brook

2006-03-02T23:59:59.000Z

53

Method For Improving The Oxidation Resistance Of Metal Substrates Coated With Thermal Barrier Coatings  

DOE Patents (OSTI)

A method for providing a protective coating on a metal-based substrate is disclosed. The method involves the application of an aluminum-rich mixture to the substrate to form a discontinuous layer of aluminum-rich particles, followed by the application of a second coating over the discontinuous layer of aluminum-rich particles. Aluminum diffuses from the aluminum-rich layer into the substrate, and into any bond coat layer which is subsequently applied. Related articles are also described. A method for providing a protective coating on a metal-based substrate is disclosed. The method involves the application of an aluminum-rich mixture to the substrate to form a discontinuous layer of aluminum-rich particles, followed by the application of a second coating over the discontinuous layer of aluminum-rich particles. Aluminum diffuses from the aluminum-rich layer into the substrate, and into any bond coat layer which is subsequently applied. Related articles are also described.

Thompson, Anthony Mark (Niskayuna, NY); Gray, Dennis Michael (Delanson, NY); Jackson, Melvin Robert (Niskayuna, NY)

2003-05-13T23:59:59.000Z

54

Apparatus for determining past-service conditions and remaining life of thermal barrier coatings and components having such coatings  

DOE Patents (OSTI)

An apparatus for determining past-service conditions and/or remaining useful life of a component of a combustion engine and/or a thermal barrier coating ("TBC") of the component comprises a radiation source that provides the exciting radiation to the TBC to excite a photoluminescent ("PL") material contained therein, a radiation detector for detecting radiation emitted by the PL material, and means for relating a characteristic of an emission spectrum of the PL material to the amount of a crystalline phase in the TBC, thereby inferring the past-service conditions or the remaining useful life of the component or the TBC.

Srivastava, Alok Mani (Niskayuna, NY); Setlur, Anant Achyut (Niskayuna, NY); Comanzo, Holly Ann (Niskayuna, NY); Devitt, John William (Clifton Park, NY); Ruud, James Anthony (Delmar, NY); Brewer, Luke Nathaniel (Rexford, NY)

2004-05-04T23:59:59.000Z

55

Assessment of Failure Mechanisms for Thermal Barrier Coatings by Photoluminescence, Electrochemical Impedance and Focused Ion Beam  

NLE Websites -- All DOE Office Websites (Extended Search)

H. Sohn, B. Jayaraj and V.H. Desai H. Sohn, B. Jayaraj and V.H. Desai SCIES Project 02- 01- SR103 DOE COOPERATIVE AGREEMENT DE-FC26-02NT41431 Tom J. George, Program Manager, DOE/NETL Richard Wenglarz, Manager of Research, SCIES Project Awarded (May 1, 2002, 36 Month Duration) $249,766 Total Contract Value ($208,228 DOE UTSR) Assessment of Failure Mechanisms for Thermal Barrier Coatings by Photoluminescence, Electrochemical Impedance and Focused Ion Beam YHS@UCF,10/17/05 Gas Turbine Needs: Reliable and Durable Thermal Barrier Coatings (TBCs) TBCs Provide Thermal Protection of Hot Components in Advanced Gas Turbine Engines Increase in Performance, Efficiency, Reliability and Maintainability. Reduction Life Cycle Costs. Reliable and Durable TBCs Needed as An Integral Part of Component Design.

56

The effect of sintering and CMAS on the stability of plasma-sprayed zirconia thermal barrier coatings  

E-Print Network (OSTI)

State of the art thermal barrier coatings (TBCs) for gas turbine applications comprise (7 wt.%) yttria partially stabilized zirconia (7YSZ). 7YSZ offers a range of attractive functional properties – low thermal conductivity, high thermal expansion...

Shinozaki, Maya

2013-07-09T23:59:59.000Z

57

On the oxidation of high-temperature alloys, and its role in failure of thermal barrier coatings  

E-Print Network (OSTI)

Thermal barrier coating (TBC) systems are applied to superalloy turbine blades to provide thermal insulation and oxidation protection. A TBC system consists of (a) an outer oxide layer that imparts thermal insulation, and ...

Loeffel, Kaspar Andreas

2013-01-01T23:59:59.000Z

58

Combustion Control and Diagnostics Sensor Testing in a Thermal Barrier Coated Combustor  

Science Conference Proceedings (OSTI)

The combustion control and diagnostics sensor (CCADS) continues to be developed as an in-situ combustion sensor, with immediate application to natural gas fired turbines. In-situ combustion monitoring is also expected to benefit advanced power plants of the future, fueled by coal-derived syngas, liquified natural gas (LNG), hydrogen, or hydrogen blend fuels. The in-situ monitoring that CCADS provides can enable the optimal operation of advanced, fuel-flexible turbines for minimal pollutant emissions and maximum efficiency over the full operating range of an advanced turbine. Previous work has demonstrated CCADS as a useful sensor for in-situ monitoring of natural gas combustion, including detection of important combustion events such as flashback and lean blowoff, in experimental combustors without thermal barrier coatings (TBC). Since typical TBC materials are electrical insulators at room temperature, and CCADS operation requires conduction of electrical current to the walls of the combustor, a TBC on the combustion liner was identified as a potential barrier to CCADS operation in commercial application. This paper reports on CCADS experiments in a turbulent lean premixed combustor with a yttria-stabilized zirconia (YSZ) thermal barrier coating on the combustor wall. The tests were conducted at 0.1 MPa (1 atm), with a 15V excitation voltage on the CCADS electrodes. The results confirm that for a typical thermal barrier coating, CCADS operates properly, and the total measured average resistance is close to that of an uncoated combustor. This result is consistent with previous materials studies that found the electrical resistance of typical TBC materials considerably decreases at combustor operating temperatures.

Chorpening, B.T.; Dukes, M.G.; Robey, E.H.; Thornton, J.D.

2007-05-01T23:59:59.000Z

59

The effect of thermal aging on the thermal conductivity of plasma sprayed and EB-PVD thermal barrier coatings  

DOE Green Energy (OSTI)

Thermal barrier coatings (TBCs) applied to the hot gas components of turbine engines lead to enhanced fuel efficiency and component reliability. Understanding the mechanisms which control the thermal transport behavior of the TBCs is of primary importance. Electron beam-physical vapor deposition (EV-PVD) and air plasma spraying (APS) are the two most commonly used coating techniques. These techniques produce coatings with unique microstructures which control their performance and stability. The density of the APS coatings was controlled by varying the spray parameters. The low density APS yttria-partially stabilized zirconia (yttria-PSZ) coatings yielded a thermal conductivity that is lower than both the high density APS coatings and the EB-PVD coatings. The thermal aging of both fully and partially stabilized zirconia are compared. The thermal conductivity of the coatings permanently increases upon exposure to high temperatures. These increases are attributed to microstructural changes within the coatings. This increase in thermal conductivity can be modeled using a relationship which depends on both the temperature and time of exposure. Although the EB-PVD coatings are less susceptible to thermal aging effects, results suggest that they typically have a higher thermal conductivity than APS coatings before thermal aging. The increases in thermal conductivity due to thermal aging for plasma sprayed partially stabilized zirconia have been found to be less than for plasma sprayed fully stabilized zirconia coatings.

Dinwiddie, R.B.; Beecher, S.C.; Porter, W.D. [Oak Ridge National Lab., TN (United States); Nagaraj, B.A. [General Electric Co., Cincinnati, OH (United States). Aircraft Engine Group

1996-05-01T23:59:59.000Z

60

Advanced turbine systems - research and development of thermal barrier coatings technology: 2nd bimonthly report, February 1996  

Science Conference Proceedings (OSTI)

Objective of the ATS program is the development of ultra-highly efficient, environmentally superior, and cost-competitive gas turbine systems, with long, less cyclic operating profiles than aircraft gas turbine engines. Durability and performance demands of ATS can be achieved by means of thermal barrier coatings. Phase I (program plan) is complete. Phase II is in progress.

NONE

1996-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

NON-DESTRUCTIVE TECHNIQUES FOR THE EVALUATION OF OVERLAY AND THERMAL BARRIER COATINGS ON GAS TURBINE COMPONENTS  

DOE Green Energy (OSTI)

There is currently no satisfactory method for the non-destructive examination (NDE) of coatings on gas turbine parts and determination of coating thickness, for example, has to be carried out by sectioning of the component and subsequent metallographic analysis. This method, which is both time-consuming and expensive, has nevertheless been used extensively for aero-engine parts to monitor coating quality and to gather statistical information for process control. For large components from utility size gas turbines costs are high and compared with aero-engines, only a limited number of parts can be examined so that the destructive method becomes less attractive both as an inspection technique and for obtaining process control data to measure part to part variations in coating thickness, for example. During engine service protective coatings slowly degrade and this degradation process effectively controls the life of the part, particularly in situations where a thermal barrier coating (TBC) is used to protect against excessive metal temperatures. In this case growth of the oxide at the interface between the bond coat and the TBC leads to a build-up of stress in the TBC which can be relieved by a spalling of the ceramic layer and loss of the protection from the thermal barrier. In situations where the integrity of the TBC system is critical to the survival of the part, some non-destructive method of determining the degradation condition of the bond coat would clearly be advantageous. In this report the results are described of recent progress in a program to develop non-destructive methods to measure coating quality and to monitor the condition of coatings in service. The work which has formed part of the Advanced Turbine Systems (ATS) Project funded by DOE, has involved the use of eddy-current (ET) and ultrasonic (US) methods developed by SouthWest Research Institute (SwRI) who have been responsible for development of the technique.

Michael Cybulsky

1998-03-10T23:59:59.000Z

62

Thermal barrier coatings issues in advanced land-based gas turbines  

Science Conference Proceedings (OSTI)

The Department of Energy`s Advanced Turbine Systems (ATS) program is aimed at fostering the development of a new generation of land-based gas turbine systems with overall efficiencies significantly beyond those of current state-of-the-art machines, as well as greatly increased times between inspection and refurbishment, improved environmental impact, and decreased cost. The proposed duty cycle of ATS machines will emphasize different criteria in the selection of materials for the critical components. In particular, thermal barrier coatings (TBCS) will be an essential feature of the hot gas path components in these machines. In fact, the goals of the ATS will require significant improvements in TBC technology, since these turbines will be totally reliant on TBCs, which will be required to function on critical components such as the first stage vanes and blades for times considerably in excess of those experienced in current applications. Issues that assume increased importance are the mechanical and chemical stability of the ceramic layer and of the metallic bond coat; the thermal expansion characteristics and compliance of the ceramic layer; and the thermal conductivity across the thickness of the ceramic layer. Obviously, the ATS program provides a very challenging opportunity for TBCs, and involves some significant opportunities to extend this technology. A significant TBC development effort is planned in the ATS program which will address these key issues.

Parks, W.P. [USDOE Office of Industrial Technologies, Washington, DC (United States); Lee, W.Y.; Wright, I.G. [Oak Ridge National Lab., TN (United States)

1995-06-01T23:59:59.000Z

63

ON-LINE THERMAL BARRIER COATING MONITORING FOR REAL-TIME FAILURE PROTECTION AND LIFE MAXIMIZATION  

SciTech Connect

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization,'' to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability availability maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can therefore accelerate the degradation of substrate components materials and eventually lead to a premature failure of critical component and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2002-04-01T23:59:59.000Z

64

ON-LINE THERMAL BARRIER COATING MONITORING FOR REAL-TIME FAILURE PROTECTION AND LIFE MAXIMIZATION  

SciTech Connect

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization,'' to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability, availability, and maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can, therefore, accelerate the degradation of substrate component materials and eventually lead to a premature failure of critical components and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2003-07-01T23:59:59.000Z

65

On-Line Thermal Barrier Coating Monitoring for Real-Time Failure Protection and Life Maximization  

SciTech Connect

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization'', to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability availability maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can therefore accelerate the degradation of substrate components materials and eventually lead to a premature failure of critical component and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2005-04-01T23:59:59.000Z

66

ON-LINE THERMAL BARRIER COATING MONITORING FOR REAL-TIME FAILURE PROTECTION AND LIFE MAXIMIZATION  

SciTech Connect

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization,'' to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability, availability, and maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can, therefore, accelerate the degradation of substrate component materials and eventually lead to a premature failure of critical components and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2003-10-01T23:59:59.000Z

67

On-Line Thermal Barrier Coating Monitoring for Real-Time Failure Protection and Life Maximization  

SciTech Connect

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Power Generation, Inc proposed a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization'', to develop, build and install the first generation of an on-line TBC monitoring system for use on land-based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability availability maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can therefore accelerate the degradation of substrate components materials and eventually lead to a premature failure of critical component and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Power Generation, Inc. has teamed with Indigo Systems, a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization in the field of infrared non-destructive examination (NDE), to complete the program.

Dennis H. LeMieux

2005-10-01T23:59:59.000Z

68

On-Line Thermal Barrier Coating Monitoring for Real-Time Failure Protection and Life Maximization  

SciTech Connect

Under the sponsorship of the U. S. Department of Energy's National Energy Laboratory, Siemens Westinghouse Power Corporation proposes a four year program titled, ''On-Line Thermal Barrier Coating (TBC) Monitor for Real-Time Failure Protection and Life Maximization'', to develop, build and install the first generation of an on-line TBC monitoring system for use on land -based advanced gas turbines (AGT). Federal deregulation in electric power generation has accelerated power plant owner's demand for improved reliability availability maintainability (RAM) of the land-based advanced gas turbines. As a result, firing temperatures have been increased substantially in the advanced turbine engines, and the TBCs have been developed for maximum protection and life of all critical engine components operating at these higher temperatures. Losing TBC protection can therefore accelerate the degradation of substrate components materials and eventually lead to a premature failure of critical component and costly unscheduled power outages. This program seeks to substantially improve the operating life of high cost gas turbine components using TBC; thereby, lowering the cost of maintenance leading to lower cost of electricity. Siemens Westinghouse Power Corporation has teamed with Indigo Systems; a supplier of state-of-the-art infrared camera systems, and Wayne State University, a leading research organization.

Dennis H. LeMieux

2004-10-01T23:59:59.000Z

69

Chemical and mechanical consequences of environmental barrier coating exposure to calcium-magnesium-aluminosilicate.  

Science Conference Proceedings (OSTI)

The success of Si-based ceramics as high-temperature structural materials for gas turbine applications relies on the use of environmental barrier coatings (EBCs) with low silica activity, such as Ba{sub 1-x}Sr{sub x}Al{sub 2}Si{sub 2}O{sub 8} (BSAS), which protect the underlying components from oxidation and corrosion in combustion environments containing water vapor. One of the current challenges concerning EBC lifetime is the effect of sandy deposits of calcium-magnesium-aluminosilicate (CMAS) glass that melt during engine operation and react with the EBC, changing both its composition and stress state. In this work, we study the effect of CMAS exposure at 1300 C on the residual stress state and composition in BSAS-mullite-Si-SiC multilayers. Residual stresses were measured in BSAS multilayers exposed to CMAS for different times using high-energy X-ray diffraction. Their microstructure was studied using a combination of scanning electron microscopy and transmission electron microscopy techniques. Our results show that CMAS dissolves the BSAS topcoat preferentially through the grain boundaries, dislodging the grains and changing the residual stress state in the topcoat to a nonuniform and increasingly compressive stress state with increasing exposure time. The presence of CMAS accelerates the hexacelsian-to-celsian phase transformation kinetics in BSAS, which reacts with the glass by a solution-reprecipitation mechanism. Precipitates have crystallographic structures consistent with Ca-doped celsian and Ba-doped anorthite.

Harder, B.; Ramirez-Rico, J.; Almer, J. D.; Kang, L.; Faber, K. (X-Ray Science Division); (NASA Glenn Research Center); (Univ. of Seville); (Rolls-Royce Corp.); (Northwestern Univ.)

2011-06-01T23:59:59.000Z

70

Measurement of Three Critical Parameters as a Basis for a Simple Thermal Barrier Coating Life Prediction Methodology  

NLE Websites -- All DOE Office Websites (Extended Search)

Three Critical Parameters Three Critical Parameters As A Basis for A Simple Thermal Barrier Coating Life Prediction Methodology University of Connecticut Eric Jordan and Maurice Gell SCIES Project 02- 01- SR 097 DOE COOPERATIVE AGREEMENT DE-FC26-02NT41431 Tom J. George, Program Manager, DOE/NETL Richard Wenglarz, Manager of Research, SCIES Project Awarded (05/01/02, 36 Month Duration) $ 478,495 Total Contract Value ($ 478,495 DOE) Gas Turbine Need * Industrial Gas Turbine Performance & Durability Depend Strongly On Use Of Thermal Barrier Coatings * Aggressive Application of TBCs Limited By Lack of NDI And Lifing Methods University of Connecticut Gas Turbine Need Non-Destructive Assessment of Remaining Life Strongly Impacts Operating Cost * Reduce occurrence of unplanned shut down * Reduce wasteful precautionary part replacement

71

Mechanisms Underpinning Degradation of Protective Oxides and Thermal Barrier Coatings in High Hydrogen Content-Fueled Turbines - University of California, Irvine  

NLE Websites -- All DOE Office Websites (Extended Search)

Mechanisms Underpinning Degradation Mechanisms Underpinning Degradation of Protective Oxides and Thermal Barrier Coatings in High Hydrogen Content-Fueled Turbines-University of California, Irvine Background Thermal barrier coatings (TBCs) and components in the hot section of gas turbines are degraded by coal-derived high hydrogen content (HHC) synthesis gas (syngas). In this project the University of California, Irvine (UCI) will provide an improved mechanistic understanding of the degradation of critical turbine system materials in HHC-fueled

72

Thin-film metal coated insulation barrier in a Josephson tunnel junction. [Patent application  

DOE Patents (OSTI)

A highly stable, durable, and reproducible Josephson tunnel junction consists of a thin-film electrode of a hard superconductor, a thin oxide insulation layer over the electrode constituting a Josephson tunnel junction barrier, a thin-film layer of stabilizing metal over the barrier, and a second thin-film hard superconductive electrode over the stabilizing film. The thin stabilizing metal film is made only thick enough to limit penetration of the electrode material through the insulation layer so as to prevent a superconductive short.

Hawkins, G.A.; Clarke, J.

1975-10-31T23:59:59.000Z

73

Non-destructive evaluation of degradation in EB-PVD thermal barrier coatings by infrared reflectance spectroscopy  

Science Conference Proceedings (OSTI)

At room temperature and atmospheric conditions infrared reflectance spectroscopy and X-ray diffraction were employed for the detection of the phase transformation and residual stress within thermal barrier coatings (TBC). The TBC's samples initially consisted of the porous ceramic topcoat deposited by electron beam plasma vapor deposition, a bond coat and a superalloy substrate. Reflectance spectroscopy scans were performed from 7497 cm{sup -1} to 68 cm{sup -1} to analysis the fingerprint region as well as the chemical bonding region. These regions should indicate if a detectable change within the TBC response is a result of thermal degradation of the microstructure and the changes in yttrium dispersion throughout the yttrium stabilized zirconium. The thermal degradation was induced by thermal cycling the samples to 1100 Degree-Sign C and then cooling them in an atmospheric environment. X-ray diffraction was also used to detect the phase composition within the TBC samples and see if either would clearly identify failure prior to actual spallation. The eventual measurability and quantify-ability of the phase changes within the TBC's may be used as an effective non-destructive evaluation (NDE) technique that would allow personnel in the field to know when servicing of the turbine blade was necessary.

Flattum, Richard Y.; Cooney, Adam T. [Air Force Research Laboratory, Materials and Manufacturing Directorate, NonDestructive Evaluation Branch, Wright-Patterson AFB, OH (United States)

2013-01-25T23:59:59.000Z

74

Effect of thermal barrier coatings on the performance of steam- and water-cooled gas turbine: steam turbine combined cycle systems  

SciTech Connect

An analytical study was made of the performance of air-, steam-, and water-cooled gas-turbine/steam-turbine combined-cycle systems with and without thermal-barrier coatings. For steam cooling, thermal-barrier coatings permit an increase in the turbine inlet temperature from 1205/sup 0/C to 1370/sup 0/C, resulting in an efficiency improvement of 1.9 percentage points. The maximum specific power improvement with thermal barriers is 32.4% when the turbine inlet temperature is increased from 1425/sup 0/C to 1675/sup 0/C and the airfoil temperature is kept the same. For water cooling, the maximum efficiency improvement is 2.2 percentage points at a turbine inlet temperature of 1683/sup 0/C and the maximum specific power improvement is 36.6% by increasing the turbine inlet temperature from 1425/sup 0/C to 1730/sup 0/C and keeping the airfoil temperatures the same. These improvements are greater than that obtained with combined cycles using air-cooling at a turbine inlet temperature of 1205/sup 0/C. The large temperature differences across the thermal barriers at these high temperatures, however, indicate that thermal stresses may present obstacles to the use of coatings at high turbine inlet temperatures.

Nainiger, J.J.

1978-12-01T23:59:59.000Z

75

Thermal Barrier Coatings  

Science Conference Proceedings (OSTI)

Oct 18, 2011... by Gas-Turbine Engines: Nitin Padture1; 1The Ohio State University ... in gas- turbine engines used in aircraft propulsion and electricity ...

76

COMPARISON OF THERMAL PROPERTIES OF THERMAL BARRIER COATING DEPOSITED ON IN738 USING STANDARD AIR PLASMA SPRAY WITH 100HE PLASMA SPRAY SYSTEM  

SciTech Connect

A typical blade material is made of Nickel super alloy and can bear temperatures up to 950°C. But the operating temperature of a gas turbine is above the melting point of super alloy nearly at 1500°C. This could lead to hot corrosions, high temperature oxidation, creep, thermal fatigue may takes place on the blade material. Though the turbine has an internal cooling system, the cooling is not adequate to reduce the temperature of the blade substrate. Therefore to protect the blade material as well as increase the efficiency of the turbine, thermal barrier coatings (TBCs) must be used. A TBC coating of 250 ?m thick can reduce the temperature by up to 200° C. Air Plasma Spray Process (APS) and High Enthalpy Plasma Spray Process (100HE) were the processes used for coating the blades with the TBCs. Because thermal conductivity increases with increase in temperature, it is desired that these processes yield very low thermal conductivities at high temperatures in order not to damage the blade. An experiment was carried out using Flash line 5000 apparatus to compare the thermal conductivity of both processes.The apparatus could also be used to determine the thermal diffusivity and specific heat of the TBCs. 75 to 2800 K was the temperature range used in the experimentation. It was found out that though 100HE has high deposition efficiency, the thermal conductivity increases with increase in temperatures whiles APS yielded low thermal conductivities.

Uppu, N.; Mensah, P.F.; Ofori, D.

2006-07-01T23:59:59.000Z

77

An Equal Opportunity and Affirmative Action InstitutionDegradation of Thermal Barrier Coatings with Syngas Combustion: Testing by Hyperbaric Advanced Development Environmental Simulator and Characterization by Advanced Electron Microscopy  

E-Print Network (OSTI)

Please accept my apology in delayed delivery. Enclosed is the final technical report entitled “Degradation of Thermal Barrier Coatings with Syngas Combustion: Testing by Hyperbaric Advanced Development Environmental Simulator and Characterization by Advanced Electron Microscopy, ” by Sohn. If you have any questions, please do not hesitate to contact me at 407-882-1181 or ysohn@mail.ucf.edu.

Dr. Richard Wenglarz; Yongho Sohn

2005-01-01T23:59:59.000Z

78

Thermal Barrier Coating Systems II  

Science Conference Proceedings (OSTI)

Oct 26, 2009... on the application requirements and not on substrate physical properties such as thermal expansion rate Esp. within the same class of alloys.

79

Thermal and Environmental Barrier Coatings  

Science Conference Proceedings (OSTI)

Surface Protection for Enhanced Materials Performance: Science, Technology, and ... In this talk, we highlight results from microstructural and spectroscopic ...

80

Thermal Barrier Coatings for Superalloys  

Science Conference Proceedings (OSTI)

near-term means to dramatica?yl-y increase gas turbine inZet temperatures beyond those .... in rapid response furnaces, natural gas torch rigs, and Mach 1 burner rigs (5). Figure 3, adapted from .... under which liquid deposits are stable are.

Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Vehicle barrier  

DOE Patents (OSTI)

A vehicle security barrier which can be conveniently placed across a gate opening as well as readily removed from the gate opening to allow for easy passage. The security barrier includes a barrier gate in the form of a cable/gate member in combination with laterally attached pipe sections fixed by way of the cable to the gate member and lateral, security fixed vertical pipe posts. The security barrier of the present invention provides for the use of cable restraints across gate openings to provide necessary security while at the same time allowing for quick opening and closing of the gate areas without compromising security.

Hirsh, Robert A. (Bethel Park, PA)

1991-01-01T23:59:59.000Z

82

Thermal Barrier Coatings, Oxidation and Corrosion - Programmaster ...  

Science Conference Proceedings (OSTI)

Aug 5, 2013 ... In this study, 21%Cr SS and TYPE304 were exposed for 5 years at seashore area in Okinawa, and corrosion resistance of these steels was ...

83

Advanced Environmental Barrier Coatings for Gas Turbine ...  

Science Conference Proceedings (OSTI)

Symposium, Ceramic Matrix Composites ... and recession in water vapor rich hot- section applications such as combustor liners, vanes, shrouds, and blades.

84

Hydrogen Permeation Resistant Coatings  

DOE Green Energy (OSTI)

As the National Hydrogen Economy continues to develop and evolve the need for structural materials that can resist hydrogen assisted degradation will become critical. To date austenitic stainless steel materials have been shown to be mildly susceptible to hydrogen attack which results in lower mechanical and fracture strengths. As a result, hydrogen permeation barrier coatings may be applied to these ferrous alloys to retard hydrogen ingress. Hydrogen is known to be very mobile in materials of construction. In this study, the permeation resistance of bare stainless steel samples and coated stainless steel samples was tested. The permeation resistance was measured using a modular permeation rig using a pressure rise technique. The coating microstructure and permeation results will be discussed in this document as will some additional testing.

KORINKO, PAUL; ADAMS, THAD; CREECH, GREGGORY

2005-06-15T23:59:59.000Z

85

Corrosion resistant coatings suitable for elevated temperature application  

DOE Patents (OSTI)

The present invention relates to corrosion resistance coatings suitable for elevated temperature applications, which employ compositions of iron (Fe), chromium (Cr), nickel (Ni) and/or aluminum (Al). The compositions may be configured to regulate the diffusion of metals between a coating and a substrate, which may then influence coating performance, via the formation of an inter-diffusion barrier layer. The inter-diffusion barrier layer may comprise a face-centered cubic phase.

Chan, Kwai S. (San Antonio, TX); Cheruvu, Narayana Sastry (San Antonio, TX); Liang, Wuwei (Austin, TX)

2012-07-31T23:59:59.000Z

86

Gaseous modification of MCrAlY coatings  

SciTech Connect

The present invention generally describes methods for modifying MCrAlY coatings by using gaseous carburization, gaseous nitriding or gaseous carbonitriding. The modified MCrAlY coatings are useful in thermal barrier coating systems, which may be used in gas turbine engines.

Vance, Steven J. (Orlando, FL); Goedjen, John G. (Oviedo, FL); Sabol, Stephen M. (Orlando, FL); Sloan, Kelly M. (Longwood, FL)

2000-01-01T23:59:59.000Z

87

Bioactive Coatings  

Science Conference Proceedings (OSTI)

Oct 10, 2012 ... Tailoring the Surface Properties of Parylene Biocompatible Coating: Martina Cihova1; Quoc Nguyen2; Varshni Singh2; 1Karlsruhe Institute of ...

88

Environmental Coatings  

Science Conference Proceedings (OSTI)

Oct 28, 2009... thermal cycle lifetime when compared to conventional EB-PVD coatings. ... widely used on turbine engine blades/vanes as stand-alone overlayers. .... thin film provides a flexible, low-cost platform for surface engineering.

89

Metal matrix coated fiber composites and the methods of manufacturing such composites  

DOE Patents (OSTI)

A fiber coating which allows ceramic or metal fibers to be wetted by molten metals is disclosed. The coating inhibits degradation of the physical properties caused by chemical reaction between the fiber and the coating itself or between the fiber and the metal matrix. The fiber coating preferably includes at least a wetting layer, and in some applications, a wetting layer and a barrier layer between the fiber and the wetting layer. The wetting layer promotes fiber wetting by the metal matrix. The barrier layer inhibits fiber degradation. The fiber coating permits the fibers to be infiltrated with the metal matrix resulting in composites having unique properties not obtainable in pure materials.

Weeks, Jr., Joseph K. (Salt Lake City, UT); Gensse, Chantal (Salt Lake City, UT)

1993-01-01T23:59:59.000Z

90

DEVELOPMENT AND TESTING OF A CERIA-ZIRCONIA TOUGHENED ALUMINA PROTOTYPE FILTER ELEMENT MADE OF RETICULATED CERAMIC FOAM COATED WITH A CERAMIC MEMBRANE ACTING AS BARRIER FILTER FOR FLY ASH  

SciTech Connect

The objective of this work was to fabricate subscale candle filters using a Ce-ZTA reticulated foam material. Specifically Selee fabricated 60mm diameter cylinders with one closed end and one flanged end. Selee Corporation developed a small pore size (5-10 {micro}m) filtration membrane which was applied to the reticulated foam surface to provide a barrier filter surface. The specific tasks to be performed were as follows: (Task 1) Filter Element Development--To fabricate subscale filter elements from zirconia toughened alumina using the reticulated foam manufacturing process. The filter elements were required to meet dimensional tolerances specified by an appropriate filter system supplier. The subscale filter elements were fabricated with integral flanges and end caps, that is, with no glued joints. (Task 2) Membrane Development--To develop a small pore filtration membrane that is to be applied to the reticulated foam material. This membrane was to provide filtration characteristics that meet gas turbine requirements and pressure drop or permeability requirements specified by the filter system supplier. (Task 3) Subscale Filter Element Fabrication--To fabricate six subscale filter elements with integral flanges and closed ends, as well as fine pore size filtration membranes. Three filters were to have a central clean gas channel, while three would have no central channel. The filters were to be provided to FETC for testing in laboratory systems or pilot scale exposure systems as appropriate. The candles were to meet dimensional tolerances as provided by filter system suppliers.

Guilio A. Rossi; Kenneth R. Butcher; Stacia M. Wagner

1999-02-19T23:59:59.000Z

91

Development of nondestructive evaluation methods for ceramic coatings.  

SciTech Connect

Various nondestructive evaluation (NDE) technologies are being developed to advance the knowledge of ceramic coatings for components in the hot gas-path of advanced, low-emission gas-fired turbine engines. The ceramic coating systems being studied by NDE include thermal barrier coatings (TBCs) and environmental barrier coatings (EBCs). TBCs are under development for vanes, blades and combustor liners to allow hotter gas path temperatures and EBCs are under development to reduce environmental damage to high temperature components made of ceramic matrix composites (CMCs). Data provided by NDE methods will be used to: (a) provide data to assess reliability of new coating application processes, (b) identify defective components that could cause unscheduled outages (c) track growth rates of defects during use in engines and (d) allow rational judgement for replace/repair/re-use decisions of components.

Sun, J. G. (Nuclear Engineering Division)

2007-01-01T23:59:59.000Z

92

Hydrogen permeation resistant barrier  

DOE Patents (OSTI)

A hydrogen permeation resistant barrier is formed by diffusing aluminum into an iron or nickel alloy and forming an intermetallic aluminide layer.

McGuire, J.C.; Brehm, W.F.

1980-02-08T23:59:59.000Z

93

Hydrogen permeation resistant barrier  

DOE Patents (OSTI)

A hydrogen permeation resistant barrier is formed by diffusing aluminum into an iron or nickel alloy and forming an intermetallic aluminide layer.

McGuire, Joseph C. (Richland, WA); Brehm, William F. (Richland, WA)

1982-01-01T23:59:59.000Z

94

Silicon Oxynitride Thin Film Barriers for PV Packaging (Poster)  

DOE Green Energy (OSTI)

Dielectric, adhesion-promoting, moisture barriers comprised of silicon oxynitride thin film materials (SiOxNy with various material stoichiometric compositions x,y) were applied to: 1) bare and pre-coated soda-lime silicate glass (coated with transparent conductive oxide SnO2:F and/or aluminum), and polymer substrates (polyethylene terephthalate, PET, or polyethylene napthalate, PEN); plus 2) pre- deposited photovoltaic (PV) cells and mini-modules consisting of amorphous silicon (a-Si) and copper indium gallium diselenide (CIGS) thin-film PV technologies. We used plasma enhanced chemical vapor deposition (PECVD) process with dilute silane, nitrogen, and nitrous oxide/oxygen gas mixtures in a low-power (< or = 10 milliW per cm2) RF discharge at ~ 0.2 Torr pressure, and low substrate temperatures < or = 100(degrees)C, over deposition areas ~ 1000 cm2. Barrier properties of the resulting PV cells and coated-glass packaging structures were studied with subsequent stressing in damp-heat exposure at 85(degrees)C/85% RH. Preliminary results on PV cells and coated glass indicate the palpable benefits of the barriers in mitigating moisture intrusion and degradation of the underlying structures using SiOxNy coatings with thicknesses in the range of 100-200 nm.

del Cueto, J. A.; Glick, S. H.; Terwilliger, K. M.; Jorgensen, G. J.; Pankow, J. W.; Keyes, B. M.; Gedvilas, L. M.; Pern, F. J.

2006-10-03T23:59:59.000Z

95

Liquid metal hydrogen barriers  

DOE Patents (OSTI)

Hydrogen barriers which comprise liquid metals in which the solubility of hydrogen is low and which have good thermal conductivities at operating temperatures of interest. Such barriers are useful in nuclear fuel elements containing a metal hydride moderator which has a substantial hydrogen dissociation pressure at reactor operating temperatures.

Grover, George M. (Los Alamos, NM); Frank, Thurman G. (Los Alamos, NM); Keddy, Edward S. (Los Alamos, NM)

1976-01-01T23:59:59.000Z

96

Coating Materials  

Science Conference Proceedings (OSTI)

Table 14 Compositions of unmelted frit batches for high-temperature service silicate-based coatings...Sodium nitrate 5.0 4.0 4.4 . . . 3.8 . . . . . . Fluorspar 4.5 3.2 2.8 . . . 3.0 . . . . . . Tricobalt tetroxide 0.6 . . . 0.4 . . . 0.5 . . . . . . Nickel oxide 0.6 . . . 0.4 . . . 0.6 . . . . . . Manganese dioxide 1.8 . . . 1.1 . . . 1.1 . . . . . . Barium carbonate . . . . . . . . . 26.3 . . . 56.6 56.6...

97

A finite element analysis technique for predicting as-sprayed residual stresses generated by the plasma spray coating process  

Science Conference Proceedings (OSTI)

It is essential to analyze the residual stresses during the deposition of plasma sprayed coatings since they adversely affect the coatings' performance during their service. In this article, finite element coupled heat transfer and elastic-plastic thermal ... Keywords: Finite element analysis, Heat transfer, Plasma spraying, Residual stresses, Thermal barrier coatings

H. W. Ng; Z. Gan

2005-07-01T23:59:59.000Z

98

Retractable barrier strip  

DOE Patents (OSTI)

A portable barrier strip having retractable tire-puncture spikes for puncturing a vehicle tire. The tire-puncture spikes have an armed position for puncturing a tire and a retracted position for not puncturing a tire. The strip comprises a plurality of barrier blocks having the tire-puncture spikes removably disposed in a shaft that is rotatably disposed in each barrier block. The plurality of barrier blocks hare hingedly interconnected by complementary hinges integrally formed into the side of each barrier block which allow the strip to be rolled for easy storage and retrieval, but which prevent irregular or back bending of the strip. The shafts of adjacent barrier blocks are pivotally interconnected via a double hinged universal joint to accommodate irregularities in a roadway surface and to transmit torsional motion of the shaft from block to block. A single flexshaft cable is connected to the shaft of an end block to allow a user to selectively cause the shafts of a plurality of adjacently connected barrier blocks to rotate the tire-puncture spikes to the armed position for puncturing a vehicle tire, and to the retracted position for not puncturing the tire. The flexshaft is provided with a resiliently biased retracting mechanism, and a release latch for allowing the spikes to be quickly retracted after the intended vehicle tire is punctured.

Marts, Donna J. (Idaho Falls, ID); Barker, Stacey G. (Idaho Falls, ID); Wowczuk, Andrew (Wheeling, WV); Vellenoweth, Thomas E. (Wheeling, WV)

2002-01-01T23:59:59.000Z

99

Corrosion resistant coating  

DOE Patents (OSTI)

A method of protecting a metal substrate from corrosion including coating a metal substrate of, e.g., steel, iron or aluminum, with a conductive polymer layer of, e.g., polyaniline, coating upon said metal substrate, and coating the conductive polymer-coated metal substrate with a layer of a topcoat upon the conductive polymer coating layer, is provided, together with the resultant coated article from said method.

Wrobleski, D.A.; Benicewicz, B.C.; Thompson, K.G.; Bryan, C.J.

1997-08-19T23:59:59.000Z

100

Produced Conversion Coatings  

Science Conference Proceedings (OSTI)

Chemical conversion coatings are commonly applied to Mg alloys as paint bases and in some cases as stand-alone protection. Traditional conversion coatings ...

Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Final Technical Report - Recovery Act: Organic Coatings as Encapsulants for Low Cost, High Performance PV Modules  

DOE Green Energy (OSTI)

The objective of this project was to evaluate the feasibility of utilizing PPG's commercial organic coatings systems as efficient, modernized encapsulants for low cost, high performance, thin film photovoltaic modules. Our hypothesis was that the combination of an anticorrosive coating with a more traditional barrier topcoat would mitigate many electrochemical processes that are now responsible for the significant portion of photovoltaic (PV) failures, thereby nullifying the extremely high moisture barrier requirements of currently used encapsulation technology. Nine commercially available metal primer coatings and six commercially available top coatings were selected for screening. Twenty-one different primer/top coat combinations were evaluated. The primer coatings were shown to be the major contributor to corrosion inhibition, adhesion, and barrier properties. Two primer coatings and one top coating were downselected for testing on specially-fabricated test modules. The coated test modules passed initial current leakage and insulation testing. Damp Heat testing of control modules showed visible corrosion to the bus bar metal, whereas the coated modules showed none. One of the primer/top coat combinations retained solar power performance after Damp Heat testing despite showing some delamination at the EVA/solar cell interface. Thermal Cycling and Humidity Freeze testing resulted in only one test module retaining its power performance. Failure modes depended on the particular primer/top coating combination used. Overall, this study demonstrated that a relatively thin primer/top coating has the potential to replace the potting film and backsheet in crystalline silicon-based photovoltaic modules. Positive signals were received from commercially available coatings developed for applications having performance requirements different from those required for photovoltaic modules. It is likely that future work to redesign and customize these coatings would result in a coating system meeting the requirements for photovoltaic module encapsulation.

Stuart Hellring; Jiping Shao; James Poole

2011-12-05T23:59:59.000Z

102

Mercury Oxidation via Catalytic Barrier Filters Phase II  

SciTech Connect

In 2004, the Department of Energy National Energy Technology Laboratory awarded the University of North Dakota a Phase II University Coal Research grant to explore the feasibility of using barrier filters coated with a catalyst to oxidize elemental mercury in coal combustion flue gas streams. Oxidized mercury is substantially easier to remove than elemental mercury. If successful, this technique has the potential to substantially reduce mercury control costs for those installations that already utilize baghouse barrier filters for particulate removal. Completed in 2004, Phase I of this project successfully met its objectives of screening and assessing the possible feasibility of using catalyst coated barrier filters for the oxidation of vapor phase elemental mercury in coal combustion generated flue gas streams. Completed in September 2007, Phase II of this project successfully met its three objectives. First, an effective coating method for a catalytic barrier filter was found. Second, the effects of a simulated flue gas on the catalysts in a bench-scale reactor were determined. Finally, the performance of the best catalyst was assessed using real flue gas generated by a 19 kW research combustor firing each of three separate coal types.

Wayne Seames; Michael Mann; Darrin Muggli; Jason Hrdlicka; Carol Horabik

2007-09-30T23:59:59.000Z

103

Paint Coatings  

Science Conference Proceedings (OSTI)

Table 4   Test requirements and time to failure of various coatings...20â??30 0.8â??1.2 150 200â??500 Light zinc phosphate+lacquer paint 23â??28 0.9â??1.1 120 150â??250 Dry film lubrication, air cured 8â??13 0.3â??0.5 â?¦ 50â??100 Heavy zinc phosphate+dry film lubrication, baked 12â??25 0.5â??1.0 100 500â??1000 CARC topcoat 46â??56 1.8â??2.2 â?¦ 25â??50 Light zinc phosphate+CARC primer+topcoat 76â??127 3â??5...

104

Retractable barrier strip  

Science Conference Proceedings (OSTI)

A portable barrier strip having retractable tire-puncture means for puncturing a vehicle tire. The tire-puncture means, such as spikes, have an armed position for puncturing a tire and a retracted position for not puncturing a tire. The strip comprises a plurality of barrier blocks having the tire-puncture means removably disposed in a shaft that is rotatably disposed in each barrier block. The shaft removably and pivotally interconnects the plurality of barrier blocks. Actuation cables cause the shaft to rotate the tire-puncture means to the armed position for puncturing a vehicle tire and to the retracted position for not puncturing the tire. Each tire-puncture means is received in a hollow-bed portion of its respective barrier block when in the retracted position. The barrier strip rests stable in its deployed position and substantially motionless as a tire rolls thereon and over. The strip is rolled up for retrieval, portability, and storage purposes, and extended and unrolled in its deployed position for use.

Marts, Donna J. (Idaho Falls, ID); Barker, Stacey G. (Idaho Falls, ID); McQueen, Miles A. (Idaho Falls, ID)

1996-01-01T23:59:59.000Z

105

Retractable barrier strip  

DOE Patents (OSTI)

A portable barrier strip is described having retractable tire-puncture means for puncturing a vehicle tire. The tire-puncture means, such as spikes, have an armed position for puncturing a tire and a retracted position for not puncturing a tire. The strip comprises a plurality of barrier blocks having the tire-puncture means removably disposed in a shaft that is rotatably disposed in each barrier block. The shaft removably and pivotally interconnects the plurality of barrier blocks. Actuation cables cause the shaft to rotate the tire-puncture means to the armed position for puncturing a vehicle tire and to the retracted position for not puncturing the tire. Each tire-puncture means is received in a hollow-bed portion of its respective barrier block when in the retracted position. The barrier strip rests in its deployed position and substantially motionless as a tire rolls thereon and over. The strip is rolled up for retrieval, portability, and storage purposes, and extended and unrolled in its deployed position for use. 13 figs.

Marts, D.J.; Barker, S.G.; McQueen, M.A.

1996-04-16T23:59:59.000Z

106

Vacuum barrier for excimer lasers  

DOE Patents (OSTI)

A barrier for separating the vacuum area of a diode from the pressurized gas area of an excimer laser. The barrier is a composite material comprising layers of a metal such as copper, along with layers of polyimide, and a matrix of graphite fiber yarns impregnated with epoxy. The barrier is stronger than conventional foil barriers, and allows greater electron throughput. 3 figs.

Shurter, R.P.

1992-09-15T23:59:59.000Z

107

Superoleophilic Particles and Coatings  

Researchers at ORNL have developed a superoleophilic coating that pins a layer of oil to a specially coated substrate and particularly to the surface of the coating. The pinning action keeps the oil from leeching out of the coating, even when the ...

108

Method of installing subsurface barrier  

DOE Patents (OSTI)

Systems, components, and methods relating to subterranean containment barriers. Laterally adjacent tubular casings having male interlock structures and multiple female interlock structures defining recesses for receiving a male interlock structure are used to create subterranean barriers for containing and treating buried waste and its effluents. The multiple female interlock structures enable the barriers to be varied around subsurface objects and to form barrier sidewalls. The barrier may be used for treating and monitoring a zone of interest.

Nickelson, Reva A. (Shelley, ID); Richardson, John G. (Idaho Falls, ID); Kostelnik, Kevin M. (Idaho Falls, ID); Sloan, Paul A. (Rigby, ID)

2007-10-09T23:59:59.000Z

109

Barrier Coatings for U-Mo Microspheres Created Via Low ...  

Science Conference Proceedings (OSTI)

Establishment of a Rotating Electrode System for Production of Uranium Alloy ... Homogenization of Low Enriched Uranium-10 wt. pct Molybdenum Alloy ...

110

Characterization of Thermal Barrier Coatings Resistant to Corrosion ...  

Science Conference Proceedings (OSTI)

Mechanisms of TBC failure after sealing have not been adequately explored. ... Bi-layer TBCs, comprising an air plasma sprayed yttria-stabilized zirconia inner ...

111

Nanostructured Environmental Barrier Coatings for Corrosion Resistance in Recovery Boilers.  

E-Print Network (OSTI)

??Corrosion of components in a recovery boiler is a major problem faced by the pulp and paper industry. The superheater tubes get severely corroded due… (more)

Rao, Shishir

2011-01-01T23:59:59.000Z

112

Advanced thermal barrier coating system development: Technical progress report  

Science Conference Proceedings (OSTI)

Objectives are to provide an improved TBC system with increased temperature capability and improved reliability, for the Advanced Turbine Systems program (gas turbine). The base program consists of three phases: Phase I, program planning (complete); Phase II, development; and Phase III (selected specimen-bench test). Work is currently being performed in Phase II.

NONE

1996-08-07T23:59:59.000Z

113

Environmental Barrier Coatings for CMC - Programmaster.org  

Science Conference Proceedings (OSTI)

Symposium, International Symposium on Ceramic Matrix Composites ... which was later applied on combustor liners of a Solar Turbines' industrial gas turbine ...

114

Filler Materials for Polyphenylenesulphide Composite Coatings: Preprint  

DOE Green Energy (OSTI)

Researchers at Brookhaven National Laboratory and the National Renewable Energy Laboratory have tested polymer-based coating systems to reduce the capital equipment and maintenance costs of heat exchangers in corrosive and fouling geothermal environments. These coating systems act as barriers to corrosion to protect low-cost carbon steel tubing; they are formulated to resist wear from hydroblasting and to have high thermal conductivity. Recently, new filler materials have been developed for coating systems that use polyphenylenesulphide as a matrix. These materials include boehmite crystals (orthorhombic aluminum hydroxide, which is grown in situ as a product of reaction with the geothermal fluid), which enhance wear and corrosion resistance, and carbon fibers, which improve mechanical, thermal, and corrosion-resistance properties of the composite.

Sugama, T.; Gawlik, K.

2001-07-17T23:59:59.000Z

115

Passivation coating for flexible substrate mirrors  

DOE Patents (OSTI)

A protective diffusion barrier for metalized mirror structures is provided by a layer of coating of silicon nitride which is a very dense, transparent, dielectric material that is impervious to water, alkali, and other impurities and corrosive substances that typically attack the metal layers of mirrors and cause degradation of the mirrors' reflectivity. The silicon nitride layer can be deposited on the substrate before metal deposition thereon to stabilize the metal/substrate interface, and it can be deposited over the metal to encapsulate it and protect the metal from corrosion or other degradation. Mirrors coated with silicon nitride according to this invention can also be used as front surface mirrors. Also, the silver or other reflective metal layer on mirrors comprising thin, light-weight, flexible substrates of metal or polymer sheets coated with glassy layers can be protected with silicon nitride according to this invention. 13 figs.

Tracy, C.E.; Benson, D.K.

1988-10-19T23:59:59.000Z

116

Barriers to energy conservation  

SciTech Connect

This study provides policy guidance to the FEA in its efforts to break down barriers to the efficient usage of finite energy sources. Such efforts may involve mechanisms to promote the more-efficient usage of current energy sources or to break down the barriers that presently inhibit the introduction of alternative energy sources. The major concern is with the energy used by finished products and not with the energy used in the production process itself. A wide range of such products, including many forms of construction, are dealt with. The primary exceptions are the various kinds of motor vehicles, which have been thoroughly covered both in Congressional hearings and in other studies. A large number of different types of barriers and potential incentives were examined during the study. They range from those that are essentially purely energy-related, such as the absence of adequate technology, to constraints that only unintentionally inhibit efficient energy usage (e.g., the antitrust laws).

1975-11-01T23:59:59.000Z

117

Apparatus for coating powders  

SciTech Connect

A process and apparatus for coating small particles and fibers. The process involves agitation by vibrating or tumbling the particles or fibers to promote coating uniformly, removing adsorbed gases and static charges from the particles or fibers by an initial plasma cleaning, and coating the particles or fibers with one or more coatings, a first coating being an adhesion coating, and with subsequent coatings being deposited in-situ to prevent contamination at layer interfaces. The first coating is of an adhesion forming element (i.e. W, Zr, Re, Cr, Ti) of a 100-10,000 .ANG. thickness and the second coating or final coating of a multiple (0.1-10 microns) being Cu or Ag, for example for brazing processes, or other desired materials that defines the new surface related properties of the particles. An essential feature of the coating process is the capability to deposit in-situ without interruption to prevent the formation of a contaminated interface that could adversely affect the coating adhesion. The process may include screening of the material to be coated and either continuous or intermittent vibration to prevent agglomeration of the material to be coated.

Makowiecki, Daniel M. (Livermore, CA); Kerns, John A. (Livermore, CA); Alford, Craig S. (Tracy, CA); McKernan, Mark A. (Livermore, CA)

2000-01-01T23:59:59.000Z

118

Plasma Surface Modification of Polymer Backsheets: Origins of Future Interfacial Barrier/Backsheet Failure  

DOE Green Energy (OSTI)

Flexible polymer substrates coated with inorganic oxide moisture barriers are a potential replacement for glass backsheets in thin film PV modules. Silicon oxynitride (SiOxNy) deposited by PECVD on polyethylene terephthalate (PET) represents one potential new backsheet candidate. Barrier deposition runs at NREL have typically included a nitrogen-rich plasma pretreatment prior to actual barrier deposition with the intention of cleaning the PET surface as well as enhancing adhesion of the SiOxNy barrier film to PET; however, test coupons of PET/barrier/EVA/TPE failed after damp heat exposure. PET substrates exposed to plasma conditions similar to those used in pre-treatment were examined by X-ray photoelectron spectroscopy (XPS) to reveal new low molecular weight PET fragments are created which are volatile upon heating and water soluble. Failure analysis of the coupons determined that the moisture barrier is, in fact, transferred to the encapsulant side.

Pankow, J. W.; Glick, S. H.

2005-11-01T23:59:59.000Z

119

Geophysical characterization of subsurface barriers  

SciTech Connect

An option for controlling contaminant migration from plumes and buried waste sites is to construct a subsurface barrier of a low-permeability material. The successful application of subsurface barriers requires processes to verify the emplacement and effectiveness of barrier and to monitor the performance of a barrier after emplacement. Non destructive and remote sensing techniques, such as geophysical methods, are possible technologies to address these needs. The changes in mechanical, hydrologic and chemical properties associated with the emplacement of an engineered barrier will affect geophysical properties such a seismic velocity, electrical conductivity, and dielectric constant. Also, the barrier, once emplaced and interacting with the in situ geologic system, may affect the paths along which electrical current flows in the subsurface. These changes in properties and processes facilitate the detection and monitoring of the barrier. The approaches to characterizing and monitoring engineered barriers can be divided between (1) methods that directly image the barrier using the contrasts in physical properties between the barrier and the host soil or rock and (2) methods that reflect flow processes around or through the barrier. For example, seismic methods that delineate the changes in density and stiffness associated with the barrier represents a direct imaging method. Electrical self potential methods and flow probes based on heat flow methods represent techniques that can delineate the flow path or flow processes around and through a barrier.

Borns, D.J.

1995-08-01T23:59:59.000Z

120

Radiant Barriers | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Barriers Barriers Radiant Barriers May 30, 2012 - 2:07pm Addthis What does this mean for me? Properly installed radiant barriers can reduce your cooling costs. Radiant barriers are easiest to install in new construction, but can be installed in your existing house, especially if it has an open attic. How does it work? Radiant barriers work by reflecting radiant heat away from living spaces. Radiant barriers are installed in homes -- usually in attics -- primarily to reduce summer heat gain and reduce cooling costs. The barriers consist of a highly reflective material that reflects radiant heat rather than absorbing it. They don't, however, reduce heat conduction like thermal insulation materials. How They Work Heat travels from a warm area to a cool area by a combination of

Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Radiant Barriers | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Radiant Barriers Radiant Barriers Radiant Barriers May 30, 2012 - 2:07pm Addthis What does this mean for me? Properly installed radiant barriers can reduce your cooling costs. Radiant barriers are easiest to install in new construction, but can be installed in your existing house, especially if it has an open attic. How does it work? Radiant barriers work by reflecting radiant heat away from living spaces. Radiant barriers are installed in homes -- usually in attics -- primarily to reduce summer heat gain and reduce cooling costs. The barriers consist of a highly reflective material that reflects radiant heat rather than absorbing it. They don't, however, reduce heat conduction like thermal insulation materials. How They Work Heat travels from a warm area to a cool area by a combination of

122

Vacuum barrier for excimer lasers  

DOE Patents (OSTI)

This invention is comprised of a barrier for separating the vacuum area of a diode from the pressurized gas area of an excimer laser. The barrier is a composite material comprising layers of a metal such as copper, along with layers of polyimide, and a matrix of graphite fiber yearns impregnated with epoxy. The barrier is stronger than conventional foil barriers, and allows greater electron throughput.

Shurter, R.P.

1990-10-10T23:59:59.000Z

123

Superoleophilic Particles and Coatings  

UT-B ID 201002370 06.2012 Technology Summary Researchers at ORNL have developed a superoleophilic coating that pins a layer of oil to a specially coated substrate and ...

124

Materials Science and Engineering A369 (2004) 124137 Studies of the microstructure and properties of dense ceramic coatings  

E-Print Network (OSTI)

. Kulkarni). stress relaxation cracks [5­7]. Although, this porosity is beneficial for thermal barrier applications because it reduces the coating thermal conductivity, it is deleterious for wear and corrosion

New York at Stoney Brook, State University of

125

Thermal Spray Coatings  

Science Conference Proceedings (OSTI)

Table 35   Thermal spray coatings used for hardfacing applications...piston ring (internal combustion);

126

Nanocomposite Thermal Spray Coatings.  

Science Conference Proceedings (OSTI)

Long-Term Surface Restoration Effect Introduced by Advanced Lubricant Additive · Nanocomposite Thermal Spray Coatings. New Hardfacing Overlay Claddings ...

127

Coating Surfaces with Superhydrophobic Powder  

Researchers at ORNL have developed a method of modifying existing coating techniques to include a bonded superhydrophobic outer coating layer. ...

128

Spin coating of electrolytes  

DOE Patents (OSTI)

Methods for spin coating electrolytic materials onto substrates are disclosed. More particularly, methods for depositing solid coatings of ion-conducting material onto planar substrates and onto electrodes are disclosed. These spin coating methods are employed to fabricate electrochemical sensors for use in measuring, detecting and quantifying gases and liquids.

Stetter, Joseph R. (Naperville, IL); Maclay, G. Jordan (Maywood, IL)

1989-01-01T23:59:59.000Z

129

PIT Coating Requirements Analysis  

SciTech Connect

This study identifies the applicable requirements for procurement and installation of a coating intended for tank farm valve and pump pit interior surfaces. These requirements are intended to be incorporated into project specification documents and design media. This study also evaluates previously recommended coatings and identifies requirement-compliant coating products.

MINTEER, D.J.

2000-10-20T23:59:59.000Z

130

Breaking Down the Barriers  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Breaking Down the Barriers Breaking Down the Barriers Engaging Agency Legal Resources to be Part of the Solution Daniel Gore US Coast Guard Energy Manager X ESPC ISC Kodiak ESPC/UESC Unit Contract Type Coast Guard Alternatively Financed Project Status Estimated Contract Value (Millions) Under Consideration Initial Proposal Delayed by lack of Contracting Officer or Champion Detailed Design Study Recently Awarded TRACEN Cape May ESPC X TRACEN Petaluma PPA X X ISC San Pedro UESC X X CG Academy ESPC X TRACEN Cape May UESC X Air Station Borenquin ESPC X X Sector New York (3 sites) ESPC X X CG Yard (BAMF) ESPC X E-City ESPC X West Coast - 9 Sites ESPC X Five Essentials for Alt. Financed Project * Site approval * Technical Champion * Contracting Officer * Financial Analyst * Legal Support

131

Underground waste barrier structure  

DOE Patents (OSTI)

Disclosed is an underground waste barrier structure that consists of waste material, a first container formed of activated carbonaceous material enclosing the waste material, a second container formed of zeolite enclosing the first container, and clay covering the second container. The underground waste barrier structure is constructed by forming a recessed area within the earth, lining the recessed area with a layer of clay, lining the clay with a layer of zeolite, lining the zeolite with a layer of activated carbonaceous material, placing the waste material within the lined recessed area, forming a ceiling over the waste material of a layer of activated carbonaceous material, a layer of zeolite, and a layer of clay, the layers in the ceiling cojoining with the respective layers forming the walls of the structure, and finally, covering the ceiling with earth.

Saha, Anuj J. (Hamburg, NY); Grant, David C. (Gibsonia, PA)

1988-01-01T23:59:59.000Z

132

Barrier breaching device  

DOE Patents (OSTI)

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, Charles A. (Tracy, CA)

1985-01-01T23:59:59.000Z

133

Barrier breaching device  

DOE Patents (OSTI)

A barrier breaching device that is designed primarily for opening holes in interior walls of buildings uses detonating fuse for explosive force. The fuse acts as the ribs or spokes of an umbrella-like device that may be opened up to form a cone. The cone is placed against the wall so that detonating fuse that rings the base of the device and which is ignited by the spoke-like fuses serves to cut a circular hole in the wall.

Honodel, C.A.

1983-06-01T23:59:59.000Z

134

DEVELOPMENT AND ASSESSMENT OF COATINGS FOR FUTURE POWER GENERATION TURBINES  

SciTech Connect

The NETL-Regional University Alliance (RUA) continues to advance technology development critical to turbine manufacturer efforts for achieving DOE Fossil Energy (FE's) Advanced Turbine Program Goals. In conjunction with NETL, Coatings for Industry (CFI), the University of Pittsburgh, NASA GRC, and Corrosion Control Inc., efforts have been focused on development of composite thermal barrier coating (TBC) architectures that consist of an extreme temperature coating, a commercially applied 7-8 YSZ TBC, a reduced cost bond coat, and a diffusion barrier coating that are applied to nickel-based superalloys or single crystal airfoil substrate materials for use at temperatures >1450 C (> 2640 F). Additionally, construction of a unique, high temperature ({approx}1100 C; {approx}2010 F), bench-scale, micro-indentation, nondestructive (NDE) test facility at West Virginia University (WVU) was completed to experimentally address in-situ changes in TBC stiffness during extended cyclic oxidation exposure of coated single crystal coupons in air or steam containing environments. The efforts and technical accomplishments in these areas are presented in the following sections of this paper.

Alvin, Maryanne; Klotz, K.; McMordie, B.; Gleeson, B.; Zhu, D.; Warnes, B.; Kang, B.; Tannenbaum, J.

2012-01-01T23:59:59.000Z

135

Metal matrix coated fiber composites and the methods of manufacturing such composites  

DOE Patents (OSTI)

A fiber coating which allows ceramic or metal fibers to be wetted by molten metals is disclosed. The coating inhibits degradation of the physical properties caused by chemical reaction between the fiber and the coating itself or between the fiber and the metal matrix. The fiber coating preferably includes at least a wetting layer, and in some applications, a wetting layer and a barrier layer between the fiber and the wetting layer. The wetting layer promotes fiber wetting by the metal matrix. The barrier layer inhibits fiber degradation. The fiber coating permits the fibers to be infiltrated with the metal matrix resulting in composites having unique properties not obtainable in pure materials. 8 figures.

Weeks, J.K. Jr.; Gensse, C.

1993-09-14T23:59:59.000Z

136

CX-010440: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Categorical Exclusion Determination Reduced Cost Bond Layers for Multi-Layer ThermalEnvironmental Barrier Coatings CX(s) Applied: B3.6 Date: 06212013 Location(s):...

137

CX-010441: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Categorical Exclusion Determination Reduced Cost Bond Layers for Multi-Layer ThermalEnvironmental Barrier Coatings CX(s) Applied: B3.6 Date: 06202013 Location(s):...

138

Recent Approaches and Challenges in Smart Coatings  

Science Conference Proceedings (OSTI)

Self-healing coatings -Self-cleaning and superhydrophobic coatings - Chemical Conversion Coatings - Nano- and Micro-capsules Based Polymer Coatings

139

Tag: coat drive  

NLE Websites -- All DOE Office Websites (Extended Search)

9/all en Warm coats, big thanks 9/all en Warm coats, big thanks http://www.y12.doe.gov/community/warm-coats-big-thanks

Y-12 employees help people face some of the coldest temperatures East Tennessee has seen in a long time.
  • coats-big-thanks" rel="tag" title="Warm coats, big thanks">Read more about Warm coats, big thanks Thu, 09 Jan 2014 19:23:39 +0000 pam

  • 140

    Where radiant barriers really shine  

    Science Conference Proceedings (OSTI)

    Manufactures of radiant barrier materials claim their products significantly cut cooling costs by reducing summertime radiant heat gain through attics and ceilings. A new study confirms that radiant barriers can indeed conserve cooling energy. However, the study`s authors found that radiant barriers are much more effective at reducing energy losses from attic air conditioner duct runs than at directly lowering heat transfer through the attic floor into conditioned living space. Furthermore the study demonstrated that radiant barrier savings can be significant even in a new well-weatherized house and that these saving may justify specifying smaller capacity cooling systems. This article discusses the findings of the study.

    Engel, R.

    1996-07-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    141

    Protective Coatings Assessment  

    Science Conference Proceedings (OSTI)

    This report describes assessments of ceramic and thermal spray coatings that have advanced significantly or recently been marketed for use in the utility boiler industry to reduce slagging, mitigate fireside corrosion and potentially, circumferential cracking due to cyclic temperature variations. These innovations promise to enhance coating quality as well as reduce time and labor required to protect large areas of the boiler waterwalls. Coatings may also enable plants to improve production rates; thereb...

    2011-12-22T23:59:59.000Z

    142

    Solar selective absorption coatings  

    DOE Patents (OSTI)

    A new class of solar selective absorption coatings are disclosed. These coatings comprise a structured metallic overlayer such that the overlayer has a sub-micron structure designed to efficiently absorb solar radiation, while retaining low thermal emissivity for infrared thermal radiation. A sol-gel layer protects the structured metallic overlayer from mechanical, thermal, and environmental degradation. Processes for producing such solar selective absorption coatings are also disclosed.

    Mahoney, Alan R. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Martinez, F. Edward (Horseheads, NY)

    2004-08-31T23:59:59.000Z

    143

    Solar selective absorption coatings  

    DOE Patents (OSTI)

    A new class of solar selective absorption coatings are disclosed. These coatings comprise a structured metallic overlayer such that the overlayer has a sub-micron structure designed to efficiently absorb solar radiation, while retaining low thermal emissivity for infrared thermal radiation. A sol-gel layer protects the structured metallic overlayer from mechanical, thermal, and environmental degradation. Processes for producing such solar selective absorption coatings are also disclosed.

    Mahoney, Alan R. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Martinez, F. Edward (Horseheads, NY)

    2003-10-14T23:59:59.000Z

    144

    Field Guide: Coatings Assessment  

    Science Conference Proceedings (OSTI)

    The Electric Power Research Institute (EPRI) has numerous products to help plant personnel meet the challenges of working with aging systems, structures, and components, but none that comprehensively address protective coatings and linings. This field guide provides a compilation of protective coating and lining information in a form that allows the user to have a ready reference available during condition assessment of the various protective coatings and linings used in the plant.

    2012-05-14T23:59:59.000Z

    145

    Polymeric and Conversion Coatings  

    Science Conference Proceedings (OSTI)

    Oct 19, 2011 ... Ongoing research reveals that the search for appropriate conversion ... of the coated alloy was ~ 250 mV more noble compared to bare alloy.

    146

    Zinc phosphate conversion coatings  

    DOE Patents (OSTI)

    Zinc phosphate conversion coatings for producing metals which exhibit enhanced corrosion prevention characteristics are prepared by the addition of a transition-metal-compound promoter comprising a manganese, iron, cobalt, nickel, or copper compound and an electrolyte such as polyacrylic acid, polymethacrylic acid, polyitaconic acid and poly-L-glutamic acid to a phosphating solution. These coatings are further improved by the incorporation of Fe ions. Thermal treatment of zinc phosphate coatings to generate .alpha.-phase anhydrous zinc phosphate improves the corrosion prevention qualities of the resulting coated metal.

    Sugama, Toshifumi (Wading River, NY)

    1997-01-01T23:59:59.000Z

    147

    COPPER COATED URANIUM ARTICLE  

    DOE Patents (OSTI)

    Various techniques and methods for obtaining coppercoated uranium are given. Specifically disclosed are a group of complex uranium coatings having successive layers of nickel, copper, lead, and tin.

    Gray, A.G.

    1958-10-01T23:59:59.000Z

    148

    Alternate Coating Methods  

    Science Conference Proceedings (OSTI)

    Oct 28, 2009 ... The cold spray process can prepare thick coatings (> 1 cm) with many ... protection, thermal insulation, thermal dissipation, wear resistance, ...

    149

    Thermal Performance Evaluation of Attic Radiant Barrier Systems Using the Large Scale Climate Simulator (LSCS)  

    SciTech Connect

    Application of radiant barriers and low-emittance surface coatings in residential building attics can significantly reduce conditioning loads from heat flow through attic floors. The roofing industry has been developing and using various radiant barrier systems and low-emittance surface coatings to increase energy efficiency in buildings; however, minimal data are available that quantifies the effectiveness of these technologies. This study evaluates performance of various attic radiant barrier systems under simulated summer daytime conditions and nighttime or low solar gain daytime winter conditions using the large scale climate simulator (LSCS). The four attic configurations that were evaluated are 1) no radiant barrier (control), 2) perforated low-e foil laminated oriented strand board (OSB) deck, 3) low-e foil stapled on rafters, and 4) liquid applied low-emittance coating on roof deck and rafters. All test attics used nominal RUS 13 h-ft2- F/Btu (RSI 2.29 m2-K/W) fiberglass batt insulation on attic floor. Results indicate that the three systems with radiant barriers had heat flows through the attic floor during summer daytime condition that were 33%, 50%, and 19% lower than the control, respectively.

    Shrestha, Som S [ORNL] [ORNL; Miller, William A [ORNL] [ORNL; Desjarlais, Andre Omer [ORNL] [ORNL

    2013-01-01T23:59:59.000Z

    150

    Proceedings of the 1987 coatings for advanced heat engines workshop  

    DOE Green Energy (OSTI)

    This Workshop was conducted to enhance communication among those involved in coating development for improved heat engine performance and durability. We were fortunate to have Bill Goward review the steady progress and problems encountered along the way in the use of thermal barrier coatings (TBC) in aircraft gas turbine engines. Navy contractors discussed their work toward the elusive goal of qualifying TBC for turbine airfoil applications. In the diesel community, Caterpillar and Cummins are developing TBC for combustion chamber components as part of the low heat rejection diesel engine concept. The diesel engine TBC work is based on gas turbine technology with a goal of more than twice the thickness used on gas turbine engine components. Adoption of TBC in production for diesel engines could justify a new generation of plasma spray coating equipment. Increasing interests in tribology were evident in this Workshop. Coatings have a significant role in reducing friction and wear under greater mechanical loadings at higher temperatures. The emergence of a high temperature synthetic lubricant could have an enormous impact on diesel engine design and operating conditions. The proven coating processes such as plasma spray, electron-beam physical vapor deposition, sputtering, and chemical vapor deposition have shown enhanced capabilities, particularly with microprocessor controls. Also, the newer coating schemes such as ion implantation and cathodic arc are demonstrating intriguing potential for engine applications. Coatings will play an expanding role in higher efficiency, more durable heat engines.

    Not Available

    1987-01-01T23:59:59.000Z

    151

    Chemical Conversion Coating  

    Science Conference Proceedings (OSTI)

    Table 16   Applications of aluminum using chemical conversion coatings...doors 6063 Acrylic paint (b) Cans 3004 Sanitary lacquer Fencing 6061 None applied Chromate conversion coatings Aircraft fuselage skins 7075 clad with 7072 Zinc chromate primer Electronic chassis 6061-T4 None applied Cast missile bulkhead 356-T6 None applied Screen 5056 clad with 6253 Clear varnish...

    152

    Radiation Control Coatings Installed on Federal Buildings at Tyndall Air Force Base  

    DOE Green Energy (OSTI)

    The technical objectives of this CRADA comprise technology deployment and energy conservation efforts with the radiation control coatings industry and the utility sector. The results of this collaboration include a high-level data reporting, analysis and management system to support the deployment efforts. The technical objectives include successfully install, commission, operate, maintain and document the performance of radiation control coatings on roofs at Tyndall AFB and the Buildings Technology Center at the Oak Ridge National Laboratory; determine the life cycle savings that can be achieved by using radiation control coatings on entire roofs at Tyndall AFB, based on documented installed cost and operating maintenance costs with and without the coatings; determine if any specific improvements are required in the coatings before they can be successfully deployed in the federal sector; determine the most effective way to facilitate the widespread and rapid deployment of radiation control coatings in the federal sector; and clearly define any barriers to deployment.

    Kaba, R.L.; Petrie, T.W.

    1999-03-16T23:59:59.000Z

    153

    LEVELING METAL COATINGS  

    DOE Patents (OSTI)

    A method is described for applying metallic coatings to a cylinder of uranium. An aluminum-silicon coat is applied by a process consisting of first cleaning the article by immersion for 5 minutes in 50% nitric acid at 65 C. The article then is dipped through a flux, prepared by adding 10% sodium fluoride to 90% of a flux comprising 53% potassium chloride, 42% lithium chloride, and 5% sodium chloride at 560 for 2 minutes and then directly into a molten metal bath comprising 99% aluminun and 12% silicon at 620 C for 3 minutes. While the coating is yet molten the article is transferred to a pair of steel rollers and rolled until the coating solidifies. By varying the composition of the flux other metals such as zinc, lead or the like may be coated on uranium in a similar manner.

    Gage, H.A.

    1959-02-10T23:59:59.000Z

    154

    Laser Processing and Hard Coatings  

    Science Conference Proceedings (OSTI)

    Mar 5, 2013 ... Advances in Surface Engineering: Alloyed and Composite Coatings II: Laser Processing and Hard Coatings Sponsored by: TMS Materials ...

    155

    Organometallic Polymer Coatings for Geothermal-Fluid-Sprayed Air-Cooled Condensers: Preprint  

    DOE Green Energy (OSTI)

    Researchers are developing polymer-based coating systems to reduce scaling and corrosion of air-cooled condensers that use a geothermal fluid spray for heat transfer augmentation. These coating systems act as barriers to corrosion to protect aluminum fins and steel tubing; they are formulated to resist the strong attachment of scale. Field tests have been done to determine the corrosion and scaling issues related to brine spraying and a promising organometallic polymer has been evaluated in salt spray tests.

    Gawlik, K.; Sugama, T.; Jung, D.

    2002-08-01T23:59:59.000Z

    156

    Dry Barrier Mix in Reduction Cell Cathodes  

    Science Conference Proceedings (OSTI)

    Presentation Title, Dry Barrier Mix in Reduction Cell Cathodes ... successfully tested as a replacement for barrier bricks in several reduction cell technology types ...

    157

    Better Buildings Neighborhood Program: Phoenix Overcomes Barriers...  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Phoenix Overcomes Barriers and Energizes Homeowners to Make Upgrades to someone by E-mail Share Better Buildings Neighborhood Program: Phoenix Overcomes Barriers and Energizes...

    158

    ORNL Radiant Barrier - ETSD Division  

    NLE Websites -- All DOE Office Websites (Extended Search)

    in Zone 2), radiant barriers could reduce your utility bills by as much as 150 per year using average residential electricity prices. If you're able to participate in one of...

    159

    Characterization of thermally sprayed coatings for high-temperature wear-protection applications  

    SciTech Connect

    Under normal high-temperature gas-cooled reactor (HTGR) operating conditions, faying surfaces of metallic components under high contact pressure are prone to friction, wear, and self-welding damage. Component design calls for coatings for the protection of the mating surfaces. Anticipated operating temperatures up to 850 to 950/sup 0/C (1562 to 1742/sup 0/F) and a 40-y design life require coatings with excellent thermal stability and adequate wear and spallation resistance, and they must be compatible with the HTGR coolant helium environment. Plasma and detonation-gun (D-gun) deposited chromium carbide-base and stabilized zirconia coatings are under consideration for wear protection of reactor components such as the thermal barrier, heat exchangers, control rods, and turbomachinery. Programs are under way to address the structural integrity, helium compatibility, and tribological behavior of relevant sprayed coatings. In this paper, the need for protection of critical metallic components and the criteria for selection of coatings are discussed. The technical background to coating development and the experience with the steam cycle HTGR (HTGR-SC) are commented upon. Coating characterization techniques employed at General Atomic Company (GA) are presented, and the progress of the experimental programs is briefly reviewed. In characterizing the coatings for HTGR applications, it is concluded that a systems approach to establish correlation between coating process parameters and coating microstructural and tribological properties for design consideration is required.

    Li, C.C.

    1980-03-01T23:59:59.000Z

    160

    Superhydrophic Coatings - ORNL  

    The result is a coating which causes liquids to “bead up” on the surface of a ... Brian R. D’Urson and John T. Simpson, ... Materials Science UT-Battelle, LLC

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    161

    Coating Manufacturing Methods  

    Science Conference Proceedings (OSTI)

    Oct 30, 2013 ... Examples will include energy saving (smart radiators for satellites, low emissivity ... Finally, specific functional applications such as electrical contact and coatings on ... The study is supported by RFBR, research project No.

    162

    Friction surfaced Stellite6 coatings  

    SciTech Connect

    Solid state Stellite6 coatings were deposited on steel substrate by friction surfacing and compared with Stellite6 cast rod and coatings deposited by gas tungsten arc and plasma transferred arc welding processes. Friction surfaced coatings exhibited finer and uniformly distributed carbides and were characterized by the absence of solidification structure and compositional homogeneity compared to cast rod, gas tungsten arc and plasma transferred coatings. Friction surfaced coating showed relatively higher hardness. X-ray diffraction of samples showed only face centered cubic Co peaks while cold worked coating showed hexagonally close packed Co also. - Highlights: Black-Right-Pointing-Pointer Stellite6 used as coating material for friction surfacing. Black-Right-Pointing-Pointer Friction surfaced (FS) coatings compared with casting, GTA and PTA processes. Black-Right-Pointing-Pointer Finer and uniformly distributed carbides in friction surfaced coatings. Black-Right-Pointing-Pointer Absence of melting results compositional homogeneity in FS Stellite6 coatings.

    Rao, K. Prasad; Damodaram, R. [Department of Metallurgical and Materials Engineering - Indian Institute of Technology Madras, Chennai 600 036 (India); Rafi, H. Khalid, E-mail: khalidrafi@gmail.com [Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600 036 (India); Ram, G.D. Janaki [Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600 036 (India); Reddy, G. Madhusudhan [Metal Joining Group, Defence Metallurgical Research Laboratory (DMRL) Kanchanbagh, Hyderabad 500 058 (India); Nagalakshmi, R. [Welding Research Institute, Bharat Heavy Electricals Limited, Tiruchirappalli 620 014 (India)

    2012-08-15T23:59:59.000Z

    163

    METAL COATING BATHS  

    DOE Patents (OSTI)

    A method is presented for restoring the effectiveness of bronze coating baths used for hot dip coating of uranium. Such baths, containing a high proportion of copper, lose their ability to wet uranium surfaces after a period of use. The ability of such a bath to wet uranium can be restored by adding a small amount of metallic aluminum to the bath, and skimming the resultant hard alloy from the surface.

    Robinson, J.W.

    1958-08-26T23:59:59.000Z

    164

    Spin coating apparatus  

    DOE Patents (OSTI)

    A spin coating apparatus requires less cleanroom air flow than prior spin coating apparatus to minimize cleanroom contamination. A shaped exhaust duct from the spin coater maintains process quality while requiring reduced cleanroom air flow. The exhaust duct can decrease in cross section as it extends from the wafer, minimizing eddy formation. The exhaust duct can conform to entrainment streamlines to minimize eddy formation and reduce interprocess contamination at minimal cleanroom air flow rates.

    Torczynski, John R. (Albuquerque, NM)

    2000-01-01T23:59:59.000Z

    165

    Plasma Surface Modification of Polymer Backsheets: Origins of Future Interfacial Barrier/Backsheet Failure (Poster)  

    DOE Green Energy (OSTI)

    Flexible polymer substrates coated with inorganic oxide moisture barriers are a potential replacement for glass backsheets in thin-film PV (photovoltaic) modules. Silicon oxynitride (SiO{sub x}N{sub y}) deposited by plasma enhanced chemical vapor deposition (PECVD) on polyethylene terephthalate (PET) represents one potential new backsheet candidate. Barrier deposition runs at NREL have included a nitrogen-rich plasma pretreatment prior to barrier deposition with the intention of cleaning the PET surface and enhancing adhesion of the SiO{sub x}N{sub y} barrier film to PET; however, test coupons of PET/barrier/EVA/TPE failed after damp-heat exposure. (EVA is ethylene vinyl acetate and TPE is Tedlar{reg_sign}-PET-EVA). PET substrates exposed to plasma conditions similar to those used in pretreatment were examined by X-ray photoelectron spectroscopy (XPS) to reveal that new low molecular weight PET fragments were created at the PET surface. These fragments are responsible for barrier/PET interfacial failure and barrier transfer to the EVA encapsulant side following damp heat exposure.

    Pankow, J. W.; Glick, S. H.

    2006-05-01T23:59:59.000Z

    166

    Controlling internal barrier in low loss BaTiO3 supercapacitors  

    E-Print Network (OSTI)

    Supercapacitor behavior has been reported in a number of oxides including reduced BaTiO3 ferroelectric ceramics. These so-called giant properties are however not easily controlled. We show here that the continuous coating of individual BaTiO3 grains by a silica shell in combination with Spark Plasma Sintering is a way to process bulk composites having supercapacitor features with low dielectric losses and temperature stability. The silica shell acts both as an oxidation barrier during the processing and as a dielectric barrier in the final composite. 1 Commercial supercapacitors are using polycrystalline materials in which metallic grains or foils (like tantalum) with extended specific surface are covered by their respective oxides (like tantalum oxide). The resulting barrier layers locate electronic and ionic space charges, increasing the capacitance density. While such barrier layer supercapacitors are of everyday use, 1,2 an improved control of the interfaces barrier in such advanced materials would lead to increased functionalities: higher charge storage ability, lower losses and increased cut-off frequency. We show here that individual coating of ferroelectric BaTiO3 grains by a silica shell followed by a fast sintering in reducing conditions leads to such stable

    U-c. Chung; C. Elissalde; S. Mornet; M. Maglione; C. Estournès

    2009-01-01T23:59:59.000Z

    167

    SunShot Initiative: Lowering Barriers  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Lowering Barriers to someone by Lowering Barriers to someone by E-mail Share SunShot Initiative: Lowering Barriers on Facebook Tweet about SunShot Initiative: Lowering Barriers on Twitter Bookmark SunShot Initiative: Lowering Barriers on Google Bookmark SunShot Initiative: Lowering Barriers on Delicious Rank SunShot Initiative: Lowering Barriers on Digg Find More places to share SunShot Initiative: Lowering Barriers on AddThis.com... Concentrating Solar Power Photovoltaics Systems Integration Balance of Systems Reducing Non-Hardware Costs Lowering Barriers Fostering Growth Lowering Barriers DOE is working to improve solar market conditions in order to create green jobs and increase the availability of clean, renewable energy for Americans. Efforts to promote favorable policies and encourage easier

    168

    HYDROGEN OUTGASSING AND SURFACE PROPERTIES OF TIN COATED STAINLESS STEEL CHAMBERS.  

    DOE Green Energy (OSTI)

    The stainless steel vacuum chambers of the 248m accumulator ring of Spallation Neutron Source (SNS) are coated with {approx} 100 nm of titanium nitride (TiN) to reduce the secondary electron yield. The coating is produced by DC magnetron sputtering using a long cathode imbedded with permanent magnets. The outgassing rates of several SNS half-cell chambers were measured with and without TiN coating, and before and after in-situ bake. One potential benefit of a TiN coating is to serve as hydrogen permeation barrier that reduces the ultimate outgassing rate. By varying the coating parameters, films of different surface roughness were produced and analyzed by Auger electron spectroscopy, scanning electron microscopy and atomic force microscopy to illustrate the dependence of the outgassing on the film structure.

    HE,P.; HSEUH,H.C.; MAPES,M.; TODD,R.; WEISS,D.; WILSON,D.

    2002-11-11T23:59:59.000Z

    169

    METHOD OF PROTECTIVELY COATING URANIUM  

    DOE Patents (OSTI)

    A method is described for protectively coating uranium with zine comprising cleaning the U for coating by pickling in concentrated HNO/sub 3/, dipping the cleaned U into a bath of molten zinc between 430 to 600 C and containing less than 0 01% each of Fe and Pb, and withdrawing and cooling to solidify the coating. The zinccoated uranium may be given a; econd coating with another metal niore resistant to the corrosive influences particularly concerned. A coating of Pb containing small proportions of Ag or Sn, or Al containing small proportions of Si may be applied over the zinc coatings by dipping in molten baths of these metals.

    Eubank, L.D.; Boller, E.R.

    1959-02-01T23:59:59.000Z

    170

    Fiber coating method  

    DOE Patents (OSTI)

    A coating is applied to reinforcing fibers arranged into a tow by coaxially aligning the tow with an adjacent separation layer and winding or wrapping the tow and separation layer onto a support structure in an interleaved manner so that the separation layer separates a wrap of the tow from an adjacent wrap of the tow. A coating can then be uniformly applied to the reinforcing fibers without defects caused by fiber tow to fiber tow contact. The separation layer can be a carbon fiber veil.

    Corman, Gregory Scot (Ballston Lake, NY)

    2001-01-01T23:59:59.000Z

    171

    Fiber coating method  

    DOE Patents (OSTI)

    A coating is applied to reinforcing fibers arranged into a tow by coaxially aligning the tow with an adjacent separation layer and winding or wrapping the tow and separation layer onto a support structure in an interleaved manner so that the separation layer separates a wrap of the tow from an adjacent wrap of the tow. A coating can then be uniformly applied to the reinforcing fibers without defects caused by fiber tow to fiber tow contact. The separation layer can be a carbon fiber veil.

    Corman, Gregory Scot (Ballston Lake, NY)

    2003-04-15T23:59:59.000Z

    172

    Nontoxic foul-release coatings  

    SciTech Connect

    The Electric Power Research Institute (EPRI) under project RP-1689-9 evaluated 30 non-toxic coatings for biofouling control on steel and concrete surfaces of cooling water intakes and piping. Seven coatings were evaluated at seven sites for 2 year. The remaining 23 coatings were exposed for a variety of time lengths at the Battelle Marine Laboratory at Daytona Beach, Florida. Accelerated corrosion tests and inspection of the test panels to determine coating life were also conducted. Results of several utility conducted tests were also solicited. Silicone-based coatings performed the best with predicted lives of 2 to 4 year. Although the non-toxic coatings can be fouled by biogrowth, the rate of fouling is less and the coating can be easily cleaned. A cost-benefit methodology is presented to aid utilities to assess the potential use of non-toxic foul-release coatings at power plant cooling systems. 12 refs., 16 figs., 35 tabs.

    Not Available

    1989-10-01T23:59:59.000Z

    173

    Vented Cavity Radiant Barrier Assembly And Method  

    DOE Patents (OSTI)

    A vented cavity radiant barrier assembly (2) includes a barrier (12), typically a PV module, having inner and outer surfaces (18, 22). A support assembly (14) is secured to the barrier and extends inwardly from the inner surface of the barrier to a building surface (14) creating a vented cavity (24) between the building surface and the barrier inner surface. A low emissivity element (20) is mounted at or between the building surface and the barrier inner surface. At least part of the cavity exit (30) is higher than the cavity entrance (28) to promote cooling air flow through the cavity.

    Dinwoodie, Thomas L. (Piedmont, CA); Jackaway, Adam D. (Berkeley, CA)

    2000-05-16T23:59:59.000Z

    174

    Nanolens Window Coatings for Daylighting  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Nanolens Window Coatings for Nanolens Window Coatings for Daylighting Kyle J. Alvine Pacific Northwest National Laboratory Kyle.alvine@pnnl.gov / (509) - 372 - 4475 April 4 th , 2013 Demonstration of the effect To develop a novel, low-cost window coating to double daylight penetration to offset lighting energy use 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: PNNL is developing a novel, low-cost window coating to redirect daylight deeper into buildings to significantly offset lighting energy.

    175

    Superhydrophobic Coatings - Energy Innovation Portal  

    Technology Marketing Summary ORNL researchers have developed a variety of materials and processes to produce coatings with superhydrophobic properties ...

    176

    Nanolens Window Coatings for Daylighting  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Nanolens Window Coatings for Nanolens Window Coatings for Daylighting Kyle J. Alvine Pacific Northwest National Laboratory Kyle.alvine@pnnl.gov / (509) - 372 - 4475 April 4 th , 2013 Demonstration of the effect To develop a novel, low-cost window coating to double daylight penetration to offset lighting energy use 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: PNNL is developing a novel, low-cost window coating to redirect daylight deeper into buildings to significantly offset lighting energy.

    177

    PLASMA SPRAYED Ni-Al COATINGS FOR SAFE ENDING HEAT EXCHANGER TUBES  

    DOE Green Energy (OSTI)

    Brookhaven National Laboratory (BNL) has developed thermally conductive composite liners for corrosion and scale protection in heat exchanger tubes exposed to geothermal brine. The liners cannot withstand roller expansion to connect the tubes to the tubesheet. It is not possible to line the ends of the tubes with the same material after roller expansion due to the nature of the current liner application process. It was requested that BNL evaluate plasma sprayed Ni-Al coatings for safe ending heat exchanger tubes exposed to geothermal brine. The tubes of interest had an internal diameter of 0.875 inches. It is not typical to thermal spray small diameter components or use such small standoff distances. In this project a nozzle extension was developed by Zatorski Coating Company to spray the tube ends as well as flat coupons for testing. Four different Ni-Al coatings were investigated. One of these was a ductilized Ni-AIB material developed at Oak Ridge National Laboratory. The coatings were examined by optical and scanning electron microscopy. In addition, the coatings were analyzed by X-ray diffraction and subjected to corrosion, tensile adhesion, microhardness and field tests in a volcanic pool in New Zealand. It was determined that the Ni-Al coatings could be applied to a depth of two inches on the tube ends. When sprayed on flat coupons the coatings exhibited relatively high adhesion strength and microhardness. Polarization curves showed that the coating performance was variable. Measured corrosion potentials indicated that the Ni-Al coatings are active towards steel coated with thermally conductive polymers, thereby suggesting preferential corrosion. Corrosion also occurred on the coated coupons tested in the volcanic pool. This may have been exacerbated by the difficulty in applying a uniform coating to the coupon edges. The Ni-Al coatings applied to the tubes had significant porosity and did not provide adequate corrosion protection. This is associated with the short standoff distance and is not a reflection of the normal quality of plasma sprayed coatings. Even if coating porosity could be reduced, the coupling of an alloy coating to a polymer-based barrier coating in the same electrolyte is not recommended. Therefore, polymer coatings that can be field applied to the tube ends after roller expansion should be sought.

    ALLAN,M.L.; OTTERSON,D.; BERNDT,C.C.

    1998-11-01T23:59:59.000Z

    178

    Plastic Schottky barrier solar cells  

    SciTech Connect

    A photovoltaic cell structure is fabricated from an active medium including an undoped, intrinsically p-type organic semiconductor comprising polyacetylene. When a film of such material is in rectifying contact with a magnesium electrode, a Schottky-barrier junction is obtained within the body of the cell structure. Also, a gold overlayer passivates the magnesium layer on the undoped polyacetylene film.

    Waldrop, James R. (Thousand Oaks, CA); Cohen, Marshall J. (Thousand Oaks, CA)

    1984-01-24T23:59:59.000Z

    179

    Simulated Attic Radiant Barrier Performance  

    Science Conference Proceedings (OSTI)

    A recent EPRI evaluation determined that attic radiant barriers installed under roof decks are increasingly effective in reducing cooling energy use as insolation increases and ceiling insulation thickness decreases. A savings worksheet included in this report allows rapid estimation of these energy cost impacts.

    1991-03-29T23:59:59.000Z

    180

    Understanding Compatibilities between Advanced Coatings and ...  

    Science Conference Proceedings (OSTI)

    Oxidation Studies of HVAS-sprayed Nanostructured Coatings at Elevated Temperature · Oxide Based Thermal Sprayed Coatings for Metal Dusting Applications.

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    181

    Coating method for graphite  

    DOE Patents (OSTI)

    A method of limiting carbon contamination from graphite ware used in induction melting of uranium alloys is provided. The graphite surface is coated with a suspension of Y/sub 2/O/sub 3/ particles in water containing about 1.5 to 4 percent by weight sodium carboxymethylcellulose.

    Banker, J.G.; Holcombe, C.E. Jr.

    1975-11-06T23:59:59.000Z

    182

    Coatings for gas turbines; Specialized coatings boost, maintain turbine efficiency  

    SciTech Connect

    Airlines have been coating their jet engines for the past 30 years, thereby avoiding corrosion, erosion and wear. More recently, operators of mechanical-drive gas turbines have come to realize the value of coatings as a way to keep down costs. This paper describes specialized coatings technology which has evolved for gas turbines. Coatings have been designed for specific areas and even specific components within the turbine. Because operators must often request these coatings when buying new equipment or at overhaul, a basic understanding of the technology is presented.

    1988-10-01T23:59:59.000Z

    183

    Gamma Survey of a Permeable Reactive Barrier at Monticello, Utah...  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Gamma Survey of a Permeable Reactive Barrier at Monticello, Utah Gamma Survey of a Permeable Reactive Barrier at Monticello, Utah Gamma Survey of a Permeable Reactive Barrier at...

    184

    Coastal Barrier Resources Act | Open Energy Information  

    Open Energy Info (EERE)

    Barrier Resources Act Barrier Resources Act Jump to: navigation, search Statute Name Coastal Barrier Resources Act Year 1982 Url [[File:|160px|link=]] Description References Wikipedia[1] FWS Coastal Barrier Resources Act Webpage[2] The Coastal Barrier Resources Act of the United States was enacted October 18, 1982. The United States Congress passed this Act in order to address the many problems associated with coastal barrier development. CBRA designated various undeveloped coastal barriers, which were illustrated by a set of maps adopted by law, to be included in the John H. Chafee Coastal Barrier Resources System (CBRS). These designated areas were made ineligible for both direct and indirect Federal expenditures and financial assistance, which are believed to encourage development of fragile,

    185

    Electrical Calcium Test for Measuring Barrier Permeability ...  

    Energy Analysis; Energy Storage ... Technology Marketing Summary Moisture or water vapor barriers are important in ... Software techniques for data an ...

    186

    NERSC's Hopper Breaks Petaflops Barrier  

    NLE Websites -- All DOE Office Websites (Extended Search)

    NERSC's Hopper Breaks NERSC's Hopper Breaks Petaflops Barrier NERSC's Hopper Breaks Petaflops Barrier Ranks 5th in the World November 14, 2010 Media Contact: Jon Bashor, jbashor@lbl.gov, 510-486-5849 hopper1.jpg NERSC's Cray XE6-Hopper BERKELEY, Calif.-The Department of Energy's National Energy Research Scientific Computing Center (NERSC), already one of the world's leading centers for scientific productivity, is now home to the fifth most powerful supercomputer in the world and the second most powerful in the United States, according to the latest edition of the TOP500 list, the definitive ranking of the world's top computers NERSC's newest supercomputer, a 153,408 processor-core Cray XE6 system, posted a performance of 1.05 petaflops (quadrillions of calculations per second) running the Linpack benchmark. In keeping with NERSC's tradition of

    187

    Materials - Coatings & Lubricants  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Coatings and Lubricants: Coatings and Lubricants: Super-Hard and Ultra-Low-Friction Films for Friction and Wear Control Ali Erdemir researches nanolubricants. Ali Erdemir researches nanolubricants. The many rolling, rotating and sliding mechanical assemblies in advanced transportation vehicles present friction and wear challenges for automotive engineers. These systems operate under severe conditions-high loads, speeds and temperatures-that currently available materials and lubricants do not tolerate well. Improving the surface friction and wear characteristics of the mechanical system components is an opportunity for engineers, and the use of super-hard, slippery surface films offers promise. Argonne scientists have developed a number of smooth, wear-resistant, low-friction nanocomposite nitride and diamond-like carbon films that have

    188

    Antithrombogenic Polymer Coating.  

    DOE Patents (OSTI)

    An article having a non-thrombogenic surface and a process for making the article are disclosed. The article is formed by (i) coating a polymeric substrate with a crosslinked chemical combination of a polymer having at least two amino substituted side chains, a crosslinking agent containing at least two crosslinking functional groups which react with amino groups on the polymer, and a linking agent containing a first functional group which reacts with a third functional group of the crosslinking agent, and (ii) contacting the coating on the substrate with an antithrombogenic agent which covalently bonds to a second functional group of the linking agent. In one example embodiment, the polymer is a polyamide having amino substituted alkyl chains on one side of the polyamide backbone, the crosslinking agent is a phosphine having the general formula (A).sub.3 P wherein A is hydroxyalkyl, the linking agent is a polyhydrazide and the antithrombogenic agent is heparin.

    Huang, Zhi Heng (San Ramon, CA); McDonald, William F. (Utica, OH); Wright, Stacy C. (Flint, MI); Taylor, Andrew C. (Ann Arbor, MI)

    2003-01-21T23:59:59.000Z

    189

    Removing Barriers to Interdisciplinary Research  

    E-Print Network (OSTI)

    A significant amount of high-impact contemporary scientific research occurs where biology, computer science, engineering and chemistry converge. Although programmes have been put in place to support such work, the complex dynamics of interdisciplinarity are still poorly understood. In this paper we interrogate the nature of interdisciplinary research and how we might measure its "success", identify potential barriers to its implementation, and suggest possible mechanisms for removing these impediments.

    Naomi Jacobs; Martyn Amos

    2010-12-19T23:59:59.000Z

    190

    State Barriers to CHP Development  

    E-Print Network (OSTI)

    Every year, ACEEE collects data on regulatory policies in each state that theoretically serve to promote and discourage combined heat and power (CHP) development. In our annual State Energy Efficiency Scorecard (5), we assess the regulatory environment for CHP in each state and score states based on the favorability of their policies for CHP. As part of an effort to make this Scorecard more robust, ACEEE is conducting research to determine the practical realities of CHP development in each state from the perspective of CHP developers and technical assistance agencies. Preliminary research has shown that while certain regulations-and lack of regulations-can greatly influence the attractiveness or success of a project, there are market barriers outside the realm of policy that deserve a great deal of exploration and attention. Traditional regulatory barriers to CHP, such as interconnection procedures, air emissions regulations, and utility standby rates, do pose challenges for development in many states. However, discussions with CHP developers have revealed that many of these issues are overshadowed by economic and financial barriers, as well as other hidden market hurdles. Among these hurdles are the availability of natural gas at reasonable prices, the spark spread in a given region, the effectiveness of CHP developers, the presence of a devoted CHP champion at a host site, and the availability of financing mechanisms to mitigate the upfront capital burden on new projects. This paper will examine each region of the country and each state to determine specific barriers and outline a state-by-state market overview for CHP.

    Chittum, A.; Kaufman, N.

    2011-01-01T23:59:59.000Z

    191

    Protective Coatings Assessment  

    Science Conference Proceedings (OSTI)

    It is well known that fireside corrosion of waterwall panels in coal-fired boilers increased with the introduction of low NOx combustion systems since the early 1980s. This report describes ongoing work to evaluate protective coating solutions used to mitigate the wastage due to corrosion, and to determine which provide the greatest resistance to the circumferential cracking phenomena. It includes recent laboratory corrosion assisted thermal fatigue tests and analyses of field-exposed samples of ...

    2012-12-17T23:59:59.000Z

    192

    Double barrier system for an in situ conversion process  

    DOE Patents (OSTI)

    A barrier system for a subsurface treatment area is described. The barrier system includes a first barrier formed around at least a portion of the subsurface treatment area. The first barrier is configured to inhibit fluid from exiting or entering the subsurface treatment area. A second barrier is formed around at least a portion of the first barrier. A separation space exists between the first barrier and the second barrier.

    McKinzie, Billy John [Houston, TX; Vinegar, Harold J [Bellaire, TX; Cowan, Kenneth Michael [Sugar land, TX; Deeg, Wolfgang Friedrich Johann [Houston, TX; Wong, Sau-Wai [Rijswijk, NL

    2009-05-05T23:59:59.000Z

    193

    Silicon nitride protective coatings for silvered glass mirrors  

    DOE Patents (OSTI)

    A protective diffusion barrier for metalized mirror structures is provided by a layer or coating of silicon nitride which is a very dense, transparent, dielectric material that is impervious to water, alkali, and other impurities and corrosive substances that typically attack the metal layers of mirrors and cause degradation of the mirrors' reflectivity. The silicon nitride layer can be deposited on the substrate prior to metal deposition thereon to stabilize the metal/substrate interface, and it can be deposited over the metal to encapsulate it and protect the metal from corrosion or other degradation. Mirrors coated with silicon nitride according to this invention can also be used as front surface mirrors.

    Tracy, C.E.; Benson, D.K.

    1984-07-20T23:59:59.000Z

    194

    DEVELOPMENT OF PROTECTIVE COATINGS FOR SINGLE CRYSTAL TURBINE BLADES  

    DOE Green Energy (OSTI)

    Turbine blades in coal derived syngas systems are subject to oxidation and corrosion due to high steam temperature and pressure. Thermal barrier coatings (TBCs) are developed to address these problems. The emphasis is on prime-reliant design and a better coating architecture, having high temperature and corrosion resistance properties for turbine blades. In Phase I, UES Inc. proposed to develop, characterize and optimize a prime reliant TBC system, having smooth and defect-free NiCoCrAlY bond layer and a defect free oxide sublayer, using a filtered arc technology. Phase I work demonstrated the deposition of highly dense, smooth and defect free NiCoCrAlY bond coat on a single crystal CMSX-4 substrate and the deposition of alpha-alumina and yttrium aluminum garnet (YAG) sublayer on top of the bond coat. Isothermal and cyclic oxidation test and pre- and post-characterization of these layers, in Phase I work, (with and without top TBC layer of commercial EB PVD YSZ) revealed significant performance enhancement.

    Amarendra K. Rai

    2006-12-04T23:59:59.000Z

    195

    UV Curable Coatings -- Marketing Kit  

    Science Conference Proceedings (OSTI)

    Ultra violet (UV) curable coatings are being successfully applied to electric motors, metal shafts, cell phones, printing, plastic packaging, and wood laminates. Demand is expected to expand to an even greater number of end products as issues related to environmental well-being, finish quality, cost reductions, and manufacturing efficiencies drive this market. This UV Curable Coatings-Marketing Kit is designed to help utility sales and marketing personnel present UV curable coating opportunities to custo...

    2000-07-27T23:59:59.000Z

    196

    Thermal and Cold Sprayed Coatings  

    Science Conference Proceedings (OSTI)

    Mar 5, 2013... Coating Evaluated by Micro and Nano Indentation: Meysam Keshavarz1; Mohd Hasbullah bin Hj.Idris1; 1UTM,Universiti Teknologi Malaysia

    197

    Ceramic electrolyte coating and methods  

    SciTech Connect

    Aqueous coating slurries useful in depositing a dense coating of a ceramic electrolyte material (e.g., yttrium-stabilized zirconia) onto a porous substrate of a ceramic electrode material (e.g., lanthanum strontium manganite or nickel/zirconia) and processes for preparing an aqueous suspension of a ceramic electrolyte material and an aqueous spray coating slurry including a ceramic electrolyte material. The invention also includes processes for depositing an aqueous spray coating slurry including a ceramic electrolyte material onto pre-sintered, partially sintered, and unsintered ceramic substrates and products made by this process.

    Seabaugh, Matthew M. (Columbus, OH); Swartz, Scott L. (Columbus, OH); Dawson, William J. (Dublin, OH); McCormick, Buddy E. (Dublin, OH)

    2007-08-28T23:59:59.000Z

    198

    Experimental studies of tritium barrier concepts for fusion reactors  

    SciTech Connect

    Ongoing experimental studies at ANL aimed at the development of methods to reduce tritium migration in fusion reactor systems currently include (1) work on the development of multilayered metal composites and impurity-coated refractory metals as barriers to tritium permeation in elevated temperature (greater than 300$sup 0$C) structures and (2) investigations of the kinetics of tritium trapping reactions in inert gas purge streams under conditions that emulate fusion reactor environments. Significant results obtained thus far are (1) demonstration of greater than 50-fold reductions in the hydrogen permeability of stainless steel structures by using stainless steel-clad composites containing an intermediate layer of a selected copper alloy and (2) verification that surface-oxide coatings lead to greater than 100-fold reductions in the hydrogen permeability of vanadium, but that severe oxygen penetration and embrittlement of the vanadium occur at temperatures in the range from 300 to 800$sup 0$C and under conditions of extremely low oxygen potential. Other considerations pertaining to the large-scale use of metal composites in fusion reactors are discussed, and progress in efforts to demonstrate the fabricability of metal composites is reviewed. Also presented are results of studies of the efficiencies of (1) CuO and CuO-MnO$sub 2$ beds in converting HT to HTO and (2) magnesium metal beds in converting HTO to HT. (auth)

    Maroni, V.A.; Van Deventer, E.H.; Renner, T.A.; Pelto, R.H.; Wierdak, C.J.

    1975-01-01T23:59:59.000Z

    199

    Carbonaceous film coating  

    DOE Patents (OSTI)

    A method of making a carbonaceous film comprising heating tris(1,3,2-benzodiazaborolo)borazine or dodecahydro tris(1,3,2)diazaborine(1,2-a:1'2'-c:1''2''-e)borazine in an inert atmosphere in the presence of a substrate to a temperature at which the borazine compound decomposes, and the decomposition products deposit onto the substrate to form a thin, tenacious, highly reflective conductive coating having a narrow band gap which is susceptible of modification and a relatively low coefficient of friction.

    Maya, L.

    1988-04-27T23:59:59.000Z

    200

    A Micro-Indentation Method for Assessment of TBC Bond Coat Systems  

    Science Conference Proceedings (OSTI)

    Under elevated temperatures, the presence of high thermal stresses along or within thermal barrier coatings (TBCs) can lead to the development of creep cavities and wedge cracks which can ultimately form microcracks and result in interfacial debonding in the TBC bond coat region. Defects detection on the subsurface TBC layers has shown some progress by using laser scattering and other non-destructive testing (NDT) methods. However, the difficulty of determining interfacial debonding and degradation assessment of the TBC remains a significant hurdle to overcome due to the TBC’s complex multi-layer structure, and frequently rough surface morphology. The TBC has high attenuation, high porosity, and many interfaces of different materials, which are the challenges that need to be overcome by the NDT techniques. Based on our recent research development of a Transparent Indenter Measurement (TIM) method, we have further developed a simplified micro-indentation technique for mechanical property degradation measurement and debonding/spallation detection of TBC bond coat in this research effort. NETL bond-coated coupons were subjected to cumulative rapid thermal cycling, and after every 100 high temperature thermal cycles, micro-indentation tests were conducted on bond-coat superalloy and single crystal coupons. Preliminary test results showed that the measured surface stiffness responses of the NETL bond coat decreased with exposure to continued thermal cycling. Currently these data are being correlated with microstructural analyses to address potential degradation and/or spalling of the applied NETL bond coat.

    Feng, C.; Alvin, M.A.; Kang, B.S.

    2007-09-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    201

    Richards Barrier LA Reference Design Feature Evaluation  

    Science Conference Proceedings (OSTI)

    The Richards Barrier is one of the design features of the repository to be considered for the License Application (LA), Richards was a soil scientist who first described the diversion of moisture between two materials with different hydrologic properties. In this report, a Richards Barrier is a special type of backfill with a fine-grained material (such as sand) overlaying a coarse-grained material (such as gravel). Water that enters an emplacement drift will first encounter the fine-grained material and be transported around the coarse-grained material covering the waste package, thus protecting the waste package from contact with most of the groundwater. The objective of this report is to discuss the benefits and liabilities to the repository by the inclusion of a Richards Barrier type backfill in emplacement drifts. The Richards Barrier can act as a barrier to water flow, can reduce the waste package material dissolution rate, limit mobilization of the radionuclides, and can provide structural protection for the waste package. The scope of this report is to: (1) Analyze the behavior of barrier materials following the intrusion of groundwater for influxes of 1 to 300 mm per year. The report will demonstrate diversion of groundwater intrusions into the barrier over an extended time period when seismic activity and consolidation may cause the potential for liquefaction and settlement of the Richards Barrier. (2) Review the thermal effects of the Richards Barrier on material behavior. (3) Analyze the effect of rockfall on the performance of the Richards Barrier and the depth of the barrier required to protect waste packages under the barrier. (4) Review radiological and heating conditions on placement of multiple layers of the barrier. Subsurface Nuclear Safety personnel will perform calculations to determine the radiation reduction-time relationship and shielding capacity of the barrier. (5) Evaluate the effects of ventilation on cooling of emplacement drifts and dusting potential. (6) Evaluate drift conditions and configurations to determine the suitability of Richards Barrier installation methodology. (7) Perform cost assessment of barrier material placement. (8) Evaluate the feature with criteria that will be supplied by the License Application Design Selection (LADS) Team. (9) Comment on the use of depleted uranium as a Richards Barrier material.

    N.E. Kramer

    1999-11-17T23:59:59.000Z

    202

    Radiant Barrier Performance during the Heating Season  

    E-Print Network (OSTI)

    Results of winter experiments conducted in Central Texas are presented. The experiments were side-by-side tests using two identical 144 ft2 houses which responded similarly to weather variations prior to any retrofits. Two radiant barrier orientations were tested, horizontal barrier and barrier against the rafters, in vented and non-vented attics. The results compiled in this paper are for attics with R-19 fiberglass insulation. The data showed that radiant barriers were still effective during the winter season. During a typical day radiant barriers prevented approximately 9-17 percent of the indoor heat from escaping into the attic. No significant difference in moisture accumulation was detected in the attic with the radiant barrier.

    Medina, M. A.; O'Neal, D. L.; Turner, W. D.

    1992-05-01T23:59:59.000Z

    203

    Coated ceramic breeder materials  

    DOE Patents (OSTI)

    A lithium containing ceramic breeder material is described which is coated with a neutron multiplier such as Beryllium (Be), Beryllium Oxide (BeO), or other material having a higher thermal conductivity than the lithium ceramic material itself. In addition to exhibiting certain thermal conductivity properties, the neutron multiplier must be capable of withstanding the high temperatures (700/sup 0/ to 1300/sup 0/K) experienced in a breeder blanket of a fusion reactor. State of the art considerations have indicated several possible configurations for the lithium containing ceramic breeders, including a sphere-pac arrangement or sintered pellets or blocks. When one adds a neutron multiplier such as Be or BeO into a sphere-pac bed of lithium containing ceramic breeders, current concepts include mixing the neutron multiplier randomly into the sphere-pac bed in the form of small spheres of a size comparable to that of the lithium ceramic particles. The present invention shows that a sphere-pac bed of breeder particles coated with a neutron multiplier such as Be and BeO has an improved thermal conductivity when compared with that of a bed of uncoated breeder particles randomly mixed with Be or BeO spheres having the same breeder/multiplier composition ratio.

    Tam, S.W.; Johnson, C.E.

    1986-08-22T23:59:59.000Z

    204

    Rejuvenating Permeable Reactive Barriers by Chemical Flushing  

    Energy.gov (U.S. Department of Energy (DOE))

    Final Report:Rejuvenating Permeable Reactive Barriers by Chemical Flushing,U.S. Environmental Protection Agency, Region 8 Support.August 2004

    205

    BIBLIOGRAPHY ON INSTITUTIONAL BARRIERS TO ENERGY CONSERVATION  

    E-Print Network (OSTI)

    Barriers to Solar Heating and Cooling of Buildings. Preparedbuilding standards were proposed (which have since been implemented). Neighborhood planning and solar heating

    York, C.M.

    2011-01-01T23:59:59.000Z

    206

    Testing for the technology barrier: Applets - CECM  

    E-Print Network (OSTI)

    Sep 24, 1998 ... Testing for the technology barrier: Applets. The first stage was to support the creation of a set of focussed resources by a model teacher.

    207

    SunShot Initiative: Lowering Barriers  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Lowering Barriers DOE is working to improve solar market conditions in order to create green jobs and increase the availability of clean, renewable energy for Americans. Efforts to...

    208

    BIBLIOGRAPHY ON INSTITUTIONAL BARRIERS TO ENERGY CONSERVATION  

    E-Print Network (OSTI)

    and tax incentives to promote solar energy; state and localstate government can promote energy conservation and surmount institutional barriers through utilities regulation, land use control, tax incentives,

    York, C.M.

    2011-01-01T23:59:59.000Z

    209

    Thin film ion conducting coating  

    DOE Patents (OSTI)

    Durable thin film ion conducting coatings are formed on a transparent glass substrate by the controlled deposition of the mixed oxides of lithium:tantalum or lithium:niobium. The coatings provide durable ion transport sources for thin film solid state storage batteries and electrochromic energy conservation devices.

    Goldner, Ronald B. (Lexington, MA); Haas, Terry (Sudbury, MA); Wong, Kwok-Keung (Watertown, MA); Seward, George (Arlington, MA)

    1989-01-01T23:59:59.000Z

    210

    Photovoltaic Electrical Contacts and Cell Coatings | Department...  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Photovoltaic Electrical Contacts and Cell Coatings Photovoltaic Electrical Contacts and Cell Coatings August 19, 2013 - 4:12pm Addthis The outermost layers of photovoltaic (PV)...

    211

    Abradable Coatings Increase Gas Turbine Engine Efficiency  

    Science Conference Proceedings (OSTI)

    Oct 11, 2007 ... This brief article covers the uses of abradable coatings, their development and their function. Wear at high speed, effect of tip width and coating ...

    212

    Solar selective absorption coatings - Energy Innovation Portal  

    A new class of solar selective absorption coatings are disclosed. These coatings comprise a structured metallic overlayer such that the overlayer has a sub-micron ...

    213

    Ceramic composite coatings  

    DOE Patents (OSTI)

    A thin, room-temperature-curing, ceramic composite for coating and patching metal substrates comprises a sol gel silica glass matrix filled with finely ground particles or fibers, preferably alumina. The sol gel glass is made by adding ethanol to water to form a first mixture, then separately adding ethanol to tetraethyl orthosilicate to form a second mixture, then slowly adding the first to the second mixture to make a third mixture, and making a slurry by adding the finely ground particles or fibers to the third mixture. The composite can be applied by spraying, brushing or trowelling. If applied to patch fine cracks, densification of the ceramic composite may be obtained to enhance sealing by applying heat during curing.

    Wicks, G.G.

    1991-12-31T23:59:59.000Z

    214

    Ceramic composite coating  

    DOE Patents (OSTI)

    A thin, room-temperature-curing, ceramic composite for coating and patching metal substrates comprises a sol gel silica glass matrix filled with finely ground particles or fibers, preferably alumina. The sol gel glass is made by adding ethanol to water to form a first mixture, then separately adding ethanol to tetraethyl orthosilicate to form a second mixture, then slowly adding the first to the second mixture to make a third mixture, and making a slurry by adding the finely ground particles or fibers to the third mixture. The composite can be applied by spraying, brushing or trowelling. If applied to patch fine cracks, densification of the ceramic composite may be obtained to enhance sealing by applying heat during curing.

    Wicks, G.G.

    1989-01-05T23:59:59.000Z

    215

    Ceramic composite coating  

    DOE Patents (OSTI)

    A thin, room-temperature-curing, ceramic composite for coating and patching etal substrates comprises a sol gel silica glass matrix filled with finely ground particles or fibers, preferably alumina. The sol gel glass is made by adding ethanol to water to form a first mixture, then separately adding ethanol to tetraethyl orthosilicate to form a second mixture, then slowly adding the first to the second mixture to make a third mixture, and making a slurry by adding the finely ground particles or fibers to the third mixture. The composite can be applied by spraying, brushing or trowelling. If applied to patch fine cracks, densification of the ceramic composite may be obtained to enhance sealing by applying heat during curing.

    Wicks, George G. (Aiken, SC)

    1997-01-01T23:59:59.000Z

    216

    Electrical imagining of engineered hydraulic barriers  

    SciTech Connect

    Electrical resistance tomography (ERT) was used to image the full-scale test emplacement of a thin-wall grout barrier installed by high-pressure jetting and a thick-wall polymer barrier installed by low-pressure permeation injection. Both case studies compared images of electrical resistivity before and after barrier installation. Barrier materials were imaged as anomalies which were more electrically conducting than the native sandy soils at the test sites. Although the spatial resolution of the ERT was insufficient to resolve flaws smaller than a reconstruction voxel (50 cm on a side), the images did show the spatial extent of the barrier materials and therefore the general shape of the structures. To verify barrier performance, ERT was also used to monitor a flood test of a thin-wall grout barrier. Electrical resistivity changes were imaged as a saltwater tracer moved through the barrier at locations which were later found to be defects in a wall or the joining of two walls.

    Daily, W.; Ramirez, A.L.

    2000-02-01T23:59:59.000Z

    217

    Diffusion Coatings for Corrosion-Resistant Components in Coal Gasification Systems  

    Science Conference Proceedings (OSTI)

    Heat-exchangers, particle filters, turbines, and other components in integrated coal gasification combined cycle system must withstand the highly sulfiding conditions of the high-temperature coal gas over an extended period of time. The performance of components degrades significantly with time unless expensive high alloy materials are used. Deposition of a suitable coating on a low-cost alloy may improve its resistance to such sulfidation attack, and decrease capital and operating costs. The alloys used in the gasifier service include austenitic and ferritic stainless steels, nickel-chromium-iron alloys, and expensive nickel-cobalt alloys. During this period, we analyzed several coated and exposed samples of 409 steel by scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX). We report here on findings of this analysis: (1) A SS409 coupon that was coated with multilayered combined nitrides of Ti, Al, and Si showed adherent coatings on the surface; (2) A similarly coated coupon, after exposure to simulated coal gas at 900 C for 300 h, revealed that the coating has cracked during the exposure; (3) An SS409 coupon that was coated with nitrides of Ti and Si with a barrier layer of tungsten in between to improve the adhesion of the coating and to prevent outward diffusion of iron to the surface. (4) A porous coupon was coated with nitrides of Ti and Al and examination of the coupon revealed deposition of Ti at the interior surfaces. A similarly prepared coupon was exposed to simulated coal gas at 370 C for 300 h, and it showed no corrosion.

    Gopala N. Krishnan; Ripudaman Malhotra; Esperanza Alvarez; Kai-Hung Lau; Jordi Perez-Mariano; Angel Sanjurjo

    2006-06-30T23:59:59.000Z

    218

    Permeable Reactive Barriers | Department of Energy  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Permeable Reactive Barriers Permeable Reactive Barriers Permeable Reactive Barriers Permeable Reactive Barrier Field Projects Durango, Colorado DOE installed a PRB in October 1995 to treat ground water from a uranium mill tailings disposal site at Durango, Colorado Read more Cañon City, Colorado ESL personnel conduct tests and help evaluate performance at other PRB sites, such as Cotter Corporation's Cañon City site in Colorado. Read more Monticello, Utah Installation of a PRB hydraulically downgradient of the Monticello, Utah, millsite was completed June 30, 1999, as an Interim Remedial Action. Read more A permeable reactive barrier (PRB) is a zone of reactive material placed underground to intercept and react with a contaminant plume in ground water. Typically, PRBs are emplaced by replacing soils with reactive

    219

    Breaking the Fuel Cell Cost Barrier  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Breaking the Fuel Cell Cost Barrier Breaking the Fuel Cell Cost Barrier AMFC Workshop May 8 th , 2011, Arlington, VA Shimshon Gottesfeld, CTO The Fuel Cell Cost Challenge 2 CellEra's goal - achieve price parity with incumbents earlier on in market entry process ! Mainstream Polymer Electrolyte Fuel Cell ( PEM) Cost Barriers 3 Graphite / stainless steel hardware Acidic membrane Platinum based electrodes Cost barriers deeply embedded in core tech materials BOM-based cost barriers - 90% of stack cost Cost volatility - Platinum $500/Oz - $2,500/Oz The possibility of an OH - ion conducting membrane 4 Non-acidic membrane CellEra Took Advantage of this Opportunity A new type of membrane component with potential for strong fuel cell cost cuts was revealed in 2006, but was accompanied by general industry skepticism

    220

    Multi-layer waste containment barrier  

    DOE Patents (OSTI)

    An apparatus for constructing an underground containment barrier for containing an in-situ portion of earth. The apparatus includes an excavating device for simultaneously (i) excavating earthen material from beside the in-situ portion of earth without removing the in-situ portion and thereby forming an open side trench defined by opposing earthen sidewalls, and (ii) excavating earthen material from beneath the in-situ portion of earth without removing the in-situ portion and thereby forming a generally horizontal underground trench beneath the in-situ portion defined by opposing earthen sidewalls. The apparatus further includes a barrier-forming device attached to the excavating device for simultaneously forming a side barrier within the open trench and a generally horizontal, multi-layer barrier within the generally horizontal trench. The multi-layer barrier includes at least a first layer and a second layer.

    Smith, Ann Marie (Pocatello, ID); Gardner, Bradley M. (Idaho Falls, ID); Nickelson, David F. (Idaho Falls, ID)

    1999-01-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    221

    Development of nondestructive evaluation methods for ceramic coatings.  

    Science Conference Proceedings (OSTI)

    Various nondestructive evaluation (NDE) technologies are being developed to study the use of ceramic coatings on components in the hot-gas path of advanced low-emission gas-fired turbines. The types of ceramic coatings include thermal barrier coatings (TBCs) and environmental barrier coatings (EBCs). TBCs are under development for vanes, blades, and combustor liners to allow hotter gas-path temperatures, and EBCs are under development to reduce environmental damage to high-temperature components made of ceramic matrix composites. The NDE methods will be used to (a) provide data to assess the reliability of new coating application processes, (b) identify defective components that could cause unscheduled outages, (c) track growth rates of defects during component use in engines, and (d) allow rational judgment for replace/repair/re-use decisions regarding components. Advances in TBC application, both electron beam-physical vapor deposition (EB-PVD) and air plasma spraying (APS), are allowing higher temperatures in the hot-gas path. However, as TBCs become ''prime reliant,'' their condition at scheduled or unscheduled outages must be known. NDE methods are under development to assess the condition of the TBC for pre-spall conditions. EB-PVD test samples with up to 70 thermal cycles have been studied by a newly developed method involving polarized laser back-scatter NDE. Results suggest a correlation between the NDE laser data and the TBC/bond-coat topography. This finding is important because several theories directed toward understanding the pre-spall condition suggest that the topography in the thermally grown oxide layer changes significantly as a function of the number of thermal cycles. Tests have also been conducted with this NDE method on APS TBCs. Results suggest that the pre-spall condition is detected for these coatings. One-sided, high-speed thermal imaging also has shown promise for NDE of APS coatings. Testing of SiC/SiC composites for combustor liners has demonstrated that environmental EBCs are required to reduce oxidation-induced recession rates. NDE technologies, primarily one-sided and through-thickness thermal imaging, are under development to detect delaminations and degradation of EBCs. Recent results have demonstrated that NDE thermal image data correctly detected pre-spall regions of a barium-strontium-alumino-silicate coating on melt-infiltrated SiC/SiC. The NDE data were verified with field test data from a combustor liner in a 4.5 MW(e) natural-gas-fired turbine. The shape of the spalled EBC region and the growth of the spalled EBC region after various engine run times were correlated with boroscope image data from field tests. An effort has recently been started to address NDE development for oxide/oxide ceramic composites with an EBC. We will discuss the NDE methods under development for TBCs, recent NDE test results from thermally cycled TBCs, NDE results from EBCs on SiC/SiC, and the new effort directed toward oxide/oxide materials.

    Ellingson, W. A.; Deemer, C.; Sun, J. G.; Erdman, S.; Muliere, D.; Wheeler, B.

    2002-04-29T23:59:59.000Z

    222

    Geomembrane barriers using integral fiber optics to monitor barrier integrity  

    DOE Patents (OSTI)

    This invention provides a geomembrane or geotextile with embedded optical sensors that are used to monitor the status of containment site barriers. Fiber optic strands are used to form the sensors that can detect and monitor conditions at the sites such as breaches, slope creep, subsidence, leachate levels, fires, and types of materials present or leaking from the site. The strands are integral to the membrane or textile materials. The geosythetic membrane is deployed at the site in a fashion similar to carpet laying. Edges of the membrane or textile are joined to form a liner and the ends of the membrane or textile become the connection zones for obtaining signals from the sensors. A connection interface with a control system to generate Optical Time Delay Response or other light signals for transmission to the optic fiber strands or sensors and also to receive reflected signals from the sensors is included in the system. Software to interpret the sensor signals can be used in the geosythetic monitoring system.

    Staller, George E. (Albuquerque, NM); Wemple, Robert P. (Albuquerque, NM)

    1996-01-01T23:59:59.000Z

    223

    Geomembrane barriers using integral fiber optics to monitor barrier integrity  

    DOE Patents (OSTI)

    This invention provides a geomembrane or geotextile with embedded optical sensors that are used to monitor the status of containment site barriers. Fiber optic strands are used to form the sensors that can detect and monitor conditions at the sites such as breaches, slope creep, subsidence, leachate levels, fires, and types of materials present or leaking from the site. The strands are integral to the membrane or textile materials. The geosynthetic membrane is deployed at the site in a fashion similar to carpet laying. Edges of the membrane or textile are joined to form a liner and the ends of the membrane or textile become the connection zones for obtaining signals from the sensors. A connection interface with a control system to generate Optical Time Delay Response or other light signals for transmission to the optic fiber strands or sensors and also to receive reflected signals from the sensors is included in the system. Software to interpret the sensor signals can be used in the geosynthetic monitoring system. 6 figs.

    Staller, G.E.; Wemple, R.P.

    1996-10-22T23:59:59.000Z

    224

    Protective coatings and sealants for solar applications  

    DOE Green Energy (OSTI)

    An aging study has been completed which evaluated a number of polymeric materials for potential use as (1) protective coatings for back surfaces of mirrors and (2) solar heliostat edge seals. These investigations were conducted in an artificial weathering chamber that accelerated thermal cycling. The primary mirror failure mode was observed to be silver corrosion resulting from moisture exposure. To increase mirror longevity in current heliostat designs, intimate bonding at all the composite interfaces is essential to minimize moisture pathways to the silvered surface. If any voids or delaminations are present, mirror degradation will eventually occur. Delaminations can also occur as the result of mechanical stresses brought about by mismatches in the various materials coefficients of thermal expansion. If good bonding cannot be achieved or mechanical stresses avoided, then improved moisture barriers must be designed to assure mirror longevity. With good adhesion, a KRATON rubber was found to exhibit superior back surface mirror protection (12 months in environmental chamber with no corrosion). An ultraviolet stabilized butyl rubber appeared to be the best edge seal. All heliostats edge sealed with silicones showed silver corrosion which indicated either poor bonding or moisture permeation.

    Wischmann, K. B.; Gonzales, M. H.

    1980-09-01T23:59:59.000Z

    225

    Development of Recycling Compatible Pressure-Sensitive Adhesives and Coatings  

    SciTech Connect

    The objective of this project was the design of new water-based pressure-sensitive adhesive (PSA) products and coatings engineered for enhanced removal during the processing of recycled fiber. Research included the formulation, characterization, and performance measurements of new screenable coatings, testing of modified paper and board substrates and the design of test methods to characterize the inhibition of adhesive and coating fragmentation and relative removal efficiencies of developed formulations. This project was operated under the requirements that included commercially viable approaches be the focus, that findings be published in the open literature and that new strategies could not require changes in the methods and equipment used to produce PSA and PS labels or in the recycling process. The industrial partners benefited through the building of expertise in their company that they would not, and likely could not, have pursued if it had not been for the partnership. Results of research on water-based PSAs clearly identifies which PSA and paper facestock properties govern the fragmentation of the adhesive and provide multiple strategies for making (pressure-sensitive) PS labels for which the PSA is removed at very high efficiencies from recycling operations. The application of these results has led to the identification of several commercial products in Franklin International’s (industrial partner) product line that are recycling compatible. Several new formulations were also designed and are currently being scaled-up. Work on recycling compatible barrier coatings for corrugated containers examined the reinforcement of coatings using a small amount of exfoliated organically modified montmorillonite (OMMT). These OMMT/paraffin wax nanocomposites demonstrated significantly improved mechanical properties. Paraffin waxes containing clay were found to have significantly higher Young’s moduli and yield stress relative to the wax matrix, but the most impressive finding was the impact of the clay on the elongation at break; a nearly 400% increase was observed for a clay concentration of 0.5 wt.%. These coatings also demonstrate a number of other property enhancements, which make them a good candidate for continued research. Another approach explored in this research was the use of structured and self-cleaning surfaces. If the amount of coating utilized can be significantly reduced, the environmental impact is diminished.

    Steven J. Severtson

    2010-02-15T23:59:59.000Z

    226

    SuperhydrophobicCoatings.indd  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Superhydrophobic Coating Superhydrophobic Coating 1 S S S S S S S S S Su u u u u u u u u u u u u u u u u up p p p p p p p p p p p p p p p p p pe e e e e e e e e e e e e e e e e e e e e e e e e e e er r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r r rh h h h h h h h h h h h h h h h h h h h h h h h h h hy y y y y y y yd d d d d d d d d dr r r r r r ro o o op p p p ph h h h h h h ho o o o o o o o o ob b b b b bi i i ic c c c C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C C Co o o o o o o o o o o o o o o o o o o o o o o o o o o o oa a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a at t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t ti i i i i i i i i i i i i i i i i i i i i i i in n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n n ng g g g g g g g g g g g g g g g g g g g g g g 1 Superhydrophobic Coating 2 Sandia National Laboratories P.O. Box 5800, MS 1349 Albuquerque, NM 87106 C. Jeffrey Brinker Phone: 505-272-7627 Fax: 505-272-7336 cjbrink@sandia.gov AFFIRMATION: I affi rm that all information submitted as a part of, or supplemental to, this entry is a fair and accurate representation of this

    227

    Low Barrier Hydrogen Bonds in Acyclic Tertiary Diamines  

    E-Print Network (OSTI)

    In Search of a Low Barrier Hydrogen Bond in Proton Bridgedand J.A. Gerlt, “The Low Barrier Hydrogen Bond in EnzymaticShow That Low-Barrier Hydrogen Bonds do not Offer a

    Khodagholian, Sevana

    2010-01-01T23:59:59.000Z

    228

    Composition profiling of solar coating materials. Final report, April 16, 1976-April 15, 1979  

    DOE Green Energy (OSTI)

    Auger electron composition vs. depth and optical analysis revealed that a very inexpensive-to-produce (15 min. 900/sup 0/C heat treatment in air) Cr/sub 2/O/sub 3/ layer on stainless steels provides an excellent diffusion barrier for preventing stainless steel constituents from entering into an IR reflective Mo coating. It was shown that with sputter deposition of Mo at high rate in a clean noble gas plasma, one can obtain Mo coatings of excellent IR reflectance (> 96% between 2.5 and 25 ..mu..m wavelength). The optical properties (..cap alpha.. and epsilon) of various other absorber surfaces such as stacked razor blades, cone or whisker-covered metal surfaces, plasma-sprayed chromic oxide coatings etc. were measured and explored. (MOW)

    Wehner, G.K.

    1979-09-01T23:59:59.000Z

    229

    Constructing Hydraulic Barriers in Deep Geologic Formations  

    Science Conference Proceedings (OSTI)

    Many construction methods have been developed to create hydraulic barriers to depths of 30 to 50 meters, but few have been proposed for depths on the order of 500 meters. For these deep hydraulic barriers, most methods are potentially feasible for soil but not for hard rock. In the course of researching methods of isolating large subterranean blocks of oil shale, the authors have developed a wax thermal permeation method for constructing hydraulic barriers in rock to depths of over 500 meters in competent or even fractured rock as well as soil. The technology is similar to freeze wall methods, but produces a permanent barrier; and is potentially applicable in both dry and water saturated formations. Like freeze wall barriers, the wax thermal permeation method utilizes a large number of vertical or horizontal boreholes around the perimeter to be contained. However, instead of cooling the boreholes, they are heated. After heating these boreholes, a specially formulated molten wax based grout is pumped into the boreholes where it seals fractures and also permeates radially outward to form a series of columns of wax-impregnated rock. Rows of overlapping columns can then form a durable hydraulic barrier. These barriers can also be angled above a geologic repository to help prevent influx of water due to atypical rainfall events. Applications of the technique to constructing containment structures around existing shallow waste burial sites and water shutoff for mining are also described. (authors)

    Carter, E.E.; Carter, P.E. [Technologies Co, Texas (United States); Cooper, D.C. [Ph.D. Idaho National Laboratory, Idaho Falls, ID (United States)

    2008-07-01T23:59:59.000Z

    230

    Radiant barrier applications: Symposium and workshop proceedings  

    Science Conference Proceedings (OSTI)

    Electric utilities and their customers are continually looking for ways to improve the thermal integrity of buildings. Radiant barrier systems can reduce summer air conditioning loads by reducing radiant heat transfer in attics. EPRI conducted two programs to help utilities with radiant barriers. A Symposium and Workshop were conducted in April 1988. The Symposium reviewed the state of the art in radiant barriers. The Workshop brought industry experts together to identify research needs for radiant barriers. The Workshop found that research is needed in six major areas. Listed in order of importance these are: (1) Field and laboratory testing, (2) Materials research, (3) Modeling, (4) Materials standards, (5) Economic issues, and (6) Installation methods. The leading research topics within these six major areas in order of importance include:(1) Modeling to fill voids in existing field data and aid in the development of performance standards, (2) Calculation of energy savings for various configurations, (3) Analysis of existing data to better understand radiant barrier performance, (4) Assessment of the effect of dust accumulation on performance, (5) Development of standard testing procedures, (6) Development of systems standards, (7) Measurement of changes in the emissivity of radiant barrier materials with time, (8) Determination of the possibility of moisture accumulation under horizontal radiant barriers during heating season operation, (9) Ventilation effects, (10) Configuration testing, (11) Costs of new and retrofit applications, and (12) Characterization of side effects. 34 refs., 5 figs.

    Isaksen, L.

    1989-02-01T23:59:59.000Z

    231

    Corrosion resistant neutron absorbing coatings  

    SciTech Connect

    A method of forming a corrosion resistant neutron absorbing coating comprising the steps of spray or deposition or sputtering or welding processing to form a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material. Also a corrosion resistant neutron absorbing coating comprising a composite material made of a spray or deposition or sputtering or welding material, and a neutron absorbing material.

    Choi, Jor-Shan (El Cerrito, CA); Farmer, Joseph C. (Tracy, CA); Lee, Chuck K. (Hayward, CA); Walker, Jeffrey (Gaithersburg, MD); Russell, Paige (Las Vegas, NV); Kirkwood, Jon (Saint Leonard, MD); Yang, Nancy (Lafayette, CA); Champagne, Victor (Oxford, PA)

    2012-05-29T23:59:59.000Z

    232

    Electrically conductive polymer concrete coatings  

    DOE Patents (OSTI)

    A sprayable electrically conductive polymer concrete coating for vertical d overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt % calcined coke breeze, 40 wt % vinyl ester with 3.5 wt % modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag.

    Fontana, J.J.; Elling, D.; Reams, W.

    1990-03-13T23:59:59.000Z

    233

    Electrically conductive polymer concrete coatings  

    DOE Patents (OSTI)

    A sprayable electrically conductive polymer concrete coating for vertical d overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt % calcined coke breeze, 40 wt % vinyl ester with 3.5 wt % modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag.

    Fontana, Jack J. (Shirley, NY); Elling, David (Centereach, NY); Reams, Walter (Shirley, NY)

    1990-01-01T23:59:59.000Z

    234

    Electrically conductive polymer concrete coatings  

    DOE Patents (OSTI)

    A sprayable electrically conductive polymer concrete coating for vertical and overhead applications is described. The coating is permeable yet has low electrical resistivity (<10 ohm-cm), good bond strength to concrete substrates, and good weatherability. A preferred formulation contains about 60 wt% calcined coke breeze, 40 wt% vinyl ester resin with 3.5 wt% modified bentonite clay. Such formulations apply evenly and provide enough rigidity for vertical or overhead structures so there is no drip or sag. 4 tabs.

    Fontana, J.J.; Elling, D.; Reams, W.

    1988-05-26T23:59:59.000Z

    235

    Market barriers to energy efficiency  

    SciTech Connect

    Discussions of energy policy in an environmentally constrained world often focus on the use of tax instruments to internalize the external effects of energy utilization or achieve specified reductions in energy use in the most cost-effective manner. A substantial literature suggests, however, that significant opportunities exist to reduce energy utilization by implementing technologies that are cost-effective under prevailing economic conditions but that are not fully implemented by existing market institutions. This paper examines the theory of the market for energy-using equipment, showing that problems of imperfect information and transaction costs may bias rational consumers to purchase devices that use more energy than those that would be selected by a well-informed social planner guided by the criterion of economic efficiency. Consumers must base their purchase decisions on observed prices and expectations of postpurchase equipment performance. If it is difficult or costly for individuals to form accurate and precise expectations, the level of energy efficiency achieved by competitive markets will vary from the socially efficient outcome. Such market barriers'' suggest a role for regulatory intervention to improve market performance at prevailing energy prices.

    Howarth, R.B. (Lawrence Berkeley Lab., CA (United States)); Andersson, B. (Stockholm School of Economics (Sweden))

    1992-06-01T23:59:59.000Z

    236

    Market barriers to energy efficiency  

    SciTech Connect

    Discussions of energy policy in an environmentally constrained world often focus on the use of tax instruments to internalize the external effects of energy utilization or achieve specified reductions in energy use in the most cost-effective manner. A substantial literature suggests, however, that significant opportunities exist to reduce energy utilization by implementing technologies that are cost-effective under prevailing economic conditions but that are not fully implemented by existing market institutions. This paper examines the theory of the market for energy-using equipment, showing that problems of imperfect information and transaction costs may bias rational consumers to purchase devices that use more energy than those that would be selected by a well-informed social planner guided by the criterion of economic efficiency. Consumers must base their purchase decisions on observed prices and expectations of postpurchase equipment performance. If it is difficult or costly for individuals to form accurate and precise expectations, the level of energy efficiency achieved by competitive markets will vary from the socially efficient outcome. Such ``market barriers`` suggest a role for regulatory intervention to improve market performance at prevailing energy prices.

    Howarth, R.B. [Lawrence Berkeley Lab., CA (United States); Andersson, B. [Stockholm School of Economics (Sweden)

    1992-06-01T23:59:59.000Z

    237

    Performance Testing of Radiant Barriers  

    E-Print Network (OSTI)

    TVA has conducted a study to determine the effects of radiant barriers (RBI (i.e., material with a low emissivity surface facing an air space), when used with fiberglass, on attic heat transfer during summer and winter. This study employed five small test cells exposed to ambient conditions and having attics with gable and soffit vents. Three different RB configurations were tested and compared to the non-RR configuration. Heat flux transducers determined the heat transfer between the attic and conditioned space. The results showed that all RB con figurations significantly reduced heat gain through the ceiling during the summer. Reductions in heat gain during daylight and peak electric load hours were especially attractive. Roof temperatures for the RB configurations were only slightly higher than for the non-RB case. Heat transfer reductions for the RB configurations in the winter were smaller than those for the summer but were still significant in many, but not all, situations. Savings during night and peak electric load hours were especially attractive.

    Hall, J. A.

    1986-01-01T23:59:59.000Z

    238

    Permanent isolation surface barrier development plan  

    Science Conference Proceedings (OSTI)

    The exhumation and treatment of wastes may not always be the preferred alternative in the remediation of a waste site. In-place disposal alternatives, under certain circumstances, may be the most desirable alternatives to use in the protection of human health and the environment. The implementation of an in-place disposal alternative will likely require some type of protective covering that will provide long-term isolation of the wastes from the accessible environment. Even if the wastes are exhumed and treated, a long-term barrier may still be needed to adequately dispose of the treated wastes or any remaining waste residuals. Currently, no {open_quotes}proven{close_quotes} long-term barrier is available. The Hanford Site Permanent Isolation Surface Barrier Development Program (BDP) was organized to develop the technology needed to provide a long-term surface barrier capability for the Hanford Site. The permanent isolation barrier technology also could be used at other sites. Permanent isolation barriers use engineered layers of natural materials to create an integrated structure with redundant protective features. Drawings of conceptual permanent isolation surface barriers are shown. The natural construction materials (e.g., fine soil, sand, gravel, riprap, asphalt) have been selected to optimize barrier performance and longevity. The objective of current designs is to use natural materials to develop a maintenance-free permanent isolation surface barrier that isolates wastes for a minimum of 1,000 years by limiting water drainage to near-zero amounts; reducing the likelihood of plant, animal, and human intrusion; controlling the exhalation of noxious gases; and minimizing erosion-related problems.

    Wing, N.R.

    1994-01-01T23:59:59.000Z

    239

    Disposal barriers that release contaminants only by molecular diffusion  

    Science Conference Proceedings (OSTI)

    Engineered barriers can slow the movement of pollutants out of land disposal facilities in several ways. If the advective velocity is low, release will be primarily by molecular diffusion. Attenuation processes also work to slow the transport of many contaminants. Barriers that cause pollutants to be released almost entirely by molecular diffusion represent the best barriers achievable. Use of thick barrier materials will maximize the breakthrough time of contaminants that diffuse through the barrier. Thin barriers with exceedingly low permeabilities will not necessarily outperform thicker, more permeable liners. In fact, if diffusion is the dominant mechanism of release, the thicker, more permeable barrier may actually outperform the thinner barrier with lower permeability.

    Daniel, D.E.; Shackelford, C.D.

    1988-01-01T23:59:59.000Z

    240

    Hydraulic Conductivity of the Monticello Permeable Reactive Barrier  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Hydraulic Conductivity of the Monticello Permeable Reactive Barrier Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update More Documents & Publications Variation in Hydraulic Conductivity Over Time at the Monticello Permeable Reactive Barrier Performance Assessment and Recommendations for Rejuvenation of a Permeable Reactive Barrier: Cotter Corporation's Cañon City, Colorado, Uranium Mill Performance Assessment and Recommendations for Rejuvenation of a Permeable Reactive Barrier: Cotter Corporation's Cañon City, Colorado, Uranium

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    241

    Transport Properties for Triangular Barriers in Graphene  

    E-Print Network (OSTI)

    We theoretically study the electronic transport properties of Dirac fermions through one and double triangular barriers in graphene. Using the transfer matrix method, we determine the transmission, conductance and Fano factor. They are obtained to be various parameters dependent such as well width, barrier height and barrier width. Therefore, different discussions are given and comparison with the previous significant works is done. In particular, it is shown that at Dirac point the Dirac fermions always own a minimum conductance associated with a maximum Fano factor and change their behaviors in an oscillatory way (irregularly periodical tunneling peaks) when the potential of applied voltage is increased.

    Abderrahim El Mouhafid; Ahmed Jellal

    2013-03-03T23:59:59.000Z

    242

    BIBLIOGRAPHY ON INSTITUTIONAL BARRIERS TO ENERGY CONSERVATION  

    E-Print Network (OSTI)

    Neighborhood planning and solar heating and cooling in DavisLegal Barriers to Solar Heating and Cooling of Buildings.the interaction of solar energy heating/cooling/hot water

    York, C.M.

    2011-01-01T23:59:59.000Z

    243

    Surprising attractive potential barriers and repulsive wells  

    E-Print Network (OSTI)

    The fundamental fact is revealed that in the old good quantum mechanics there is possible such unexpected inversion: potential barriers can drag in wave-particles and wells can push them off.

    B. N. Zakhariev

    2008-05-06T23:59:59.000Z

    244

    Fission Barriers of Compound Superheavy Nuclei  

    E-Print Network (OSTI)

    The dependence of fission barriers on the excitation energy of the compound nucleus impacts the survival probability of superheavy nuclei synthesized in heavy-ion fusion reactions. In this work, we investigate the isentropic ...

    Sheikh, J. A.

    245

    Photovoltaic and thermophotovoltaic devices with quantum barriers  

    DOE Patents (OSTI)

    A photovoltaic or thermophotovoltaic device includes a diode formed by p-type material and n-type material joined at a p-n junction and including a depletion region adjacent to said p-n junction, and a quantum barrier disposed near or in the depletion region of the p-n junction so as to decrease device reverse saturation current density while maintaining device short circuit current density. In one embodiment, the quantum barrier is disposed on the n-type material side of the p-n junction and decreases the reverse saturation current density due to electrons while in another, the barrier is disposed on the p-type material side of the p-n junction and decreases the reverse saturation current density due to holes. In another embodiment, both types of quantum barriers are used.

    Wernsman, Bernard R. (Jefferson Hills, PA)

    2007-04-10T23:59:59.000Z

    246

    Liquid junction schottky barrier solar cell  

    DOE Patents (OSTI)

    A mixture of ceric ions (Ce.sup.+4) and cerous ions (Ce.sup.+3) in an aqueous electrolyte solution forms a Schottky barrier at the interface between an active region of silicon and the electrolyte solution. The barrier height obtained for hydrogenated amorphous silicon using the Ce.sup.+4 /Ce.sup.+3 redox couple is about 1.7 eV.

    Williams, Richard (Princeton, NJ)

    1980-01-01T23:59:59.000Z

    247

    On-Line Thermal Barrier Coating Monitoring for Real-Time Failure Protection and Life Maximization  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Final Technical Report For the period October 2002 to October 2005 Prepared for: U.S Department of Energy National Energy Technology Laboratory P.O. Box 10940 Pittsburgh, PA 15236-0940 Cooperative Agreement No. DE-FC26-01NT41232 Prepared by: Dennis H. LeMieux Siemens Power Generation, Inc 4400 Alafaya Trail Orlando, Florida 32826 October 2005 Disclaimer This report as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or legal fullness of any information, apparatus, product, or process disclosed, or represents that its use would

    248

    METAL-ORGANIC CHEMICALLY VAPOR DEPOSITED YTTRIA-STABILIZED ZIRCONIA (YSZ) FOR THERMAL BARRIER COATINGS  

    E-Print Network (OSTI)

    or Rene-N5 during engine operation. The current method for YSZ fabrication for TBC applications is by air. The solution was delivered continuously by a syringe pump through a poppet-seal relief valve

    249

    On-Line Thermal Barrier Coating Monitoring for Real-Time Failure...  

    NLE Websites -- All DOE Office Websites (Extended Search)

    ...32 9.0 List of Figures and Tables Figure 1.3a - Thermal Snapshot of 2' Diameter Flywheel with Target Features "White Light Still Frame" in...

    250

    Influence of EB-PVD TBC Microstructure on Thermal Barrier Coating System Performance Under Cyclic Conditions  

    DOE Green Energy (OSTI)

    lifetime on CMSX-4 substrates was 1250, lh cycles, whereas the respective Rene N5 specimens have not yet failed after 2300, lh cycles. The failure mode at 1100°C was identical to that at 115O?C, i.e. the TBC spalled off the surface exposing bare metal after cooling. Even though not all specimens have failed to date, the available results at 1100°C suggested that both, the substrate alloy chemistry and the YSZ microstructure significantly affect the spallation resistance of the TBC.

    Leyens, C.; Pint, B.A.; Schulz, U.; Wright, I.G.

    1999-04-12T23:59:59.000Z

    251

    Sputtering process and apparatus for coating powders  

    SciTech Connect

    A process and apparatus for coating small particles and fibers. The process involves agitation by vibrating or tumbling the particles or fibers to promote coating uniformly, removing adsorbed gases and static charges from the particles or fibers by an initial plasma cleaning, and coating the particles or fibers with one or more coatings, a first coating being an adhesion coating, and with subsequent coatings being deposited in-situ to prevent contamination at layer interfaces. The first coating is of an adhesion forming element (i.e. W, Zr, Re, Cr, Ti) of a 100-10,000 .ANG. thickness and the second coating or final coating of a multiple (0.1-10 microns) being Cu or Ag, for example for brazing processes, or other desired materials that defines the new surface related properties of the particles. An essential feature of the coating process is the capability to deposit in-situ without interruption to prevent the formation of a contaminated interface that could adversely affect the coating adhesion. The process may include screening of the material to be coated and either continuous or intermittent vibration to prevent agglomeration of the material to be coated.

    Makowiecki, Daniel M. (Livermore, CA); Kerns, John A. (Livermore, CA); Alford, Craig S. (Tracy, CA); McKernan, Mark A. (Livermore, CA)

    2002-01-01T23:59:59.000Z

    252

    Argonne CNM News: Ultrananocrystalline Diamond-Coated Membranes...  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Ultrananocrystalline Diamond-Coated Membranes Show Promise for Medical Implant Applications SEM image of UNCD coated AAO membrane SEM image of AAO membrane coated with tungsten...

    253

    Wire Making Techniques - HTS Coated Conductors - Fact Sheet ...  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Wire Making Techniques - HTS Coated Conductors - Fact Sheet Wire Making Techniques - HTS Coated Conductors - Fact Sheet Wire Making Techniques - HTS Coated Conductors - Fact Sheet...

    254

    ORGANIZATIONAL, INTERFACE AND FINANCIAL BARRIERS TO THE COMMERCIAL DEVELOPMENT OF COMMUNITY ENERGY SYSTEMS  

    E-Print Network (OSTI)

    Policy Evaluation Criteria. Organizational Barriers to MSW Ener.gy Organizational Barriers to Wind Energy

    Schladale, R.

    2010-01-01T23:59:59.000Z

    255

    ELECTROSTATICALLY ENHANCED BARRIER FILTER COLLECTION  

    SciTech Connect

    This work was performed through the University of North Dakota (UND) Chemical Engineering Department with assistance from UND's Energy & Environmental Research Center. This research was undertaken in response to the U.S. Department of Energy Federal Technology Center Program Solicitation No. DE-PS26-99FT40479, Support of Advanced Coal Research at U.S. Universities and Colleges. Specifically, this research was in support of the UCR Core Program and addressees Topic 1, Improved Hot-Gas Contaminant and Particulate Removal Techniques, introducing an advanced design for particulate removal. Integrated gasification combined cycle (IGCC) offers the potential for very high efficiency and clean electric generation. In IGCC, the product gas from the gasifier needs to be cleaned of particulate matter to avoid erosion and high-temperature corrosion difficulties arising with the turbine blades. Current methods involve cooling the gases to {approx}100 C to condense alkalis and remove sulfur and particulates using conventional scrubber technology. This ''cool'' gas is then directed to a turbine for electric generation. While IGCC has the potential to reach efficiencies of over 50%, the current need to cool the product gas for cleaning prior to firing it in a turbine is keeping IGCC from reaching its full potential. The objective of the current project was to develop a highly reliable particulate collector system that can meet the most stringent turbine requirements and emission standards, can operate at temperatures above 1500 F, is applicable for use with all U.S. coals, is compatible with various sorbent injection schemes for sulfur and alkali control, can be integrated into a variety of configurations for both pressurized gasification and combustion, increases allowable face velocity to reduce filter system capital cost, and is cost-competitive with existing technologies. The collector being developed is a new concept in particulate control called electrostatically enhanced barrier filter collection (EBFC). This concept combines electrostatic precipitation (ESP) with candle filters in a single unit. Similar technology has been recently proven on a commercial scale for atmospheric applications, but needed to be tested at high temperatures and pressures. The synergy obtained by combining the two control technologies into a single system should actually reduce filter system capital and operating costs and make the system more reliable. More specifically, the ESP is expected to significantly reduce candle filter load and also to limit ash reintrainment, allowing for full recovery of baseline pressure drop during backpulsing of the filters.

    John Erjavec; Michael D. Mann; Ryan Z. Knutson; Michael L. Swanson; Michael E. Collings

    2003-06-01T23:59:59.000Z

    256

    An evaluation of the fire barrier system thermo-lag 330-1  

    SciTech Connect

    This report presents the results of three fire endurance tests and one ampacity derating test set of the fire barrier system Thermo-Lag 330-1 Subliming Coating. Each test was performed using cable tray specimens protected by a nominal three-hour fire barrier envelope comprised of two layers of nominal 1/2 inch thick material. The fire barrier systems for two of the three fire endurance test articles and for the ampacity derating test article were installed in accordance with the manufacturer`s installations procedures. The barrier system for the third fire endurance test article was a full reproduction of one of the original manufacturer`s qualification test articles. This final test article included certain installation enhancements not considered typical of current nuclear power plant installations. The primary criteria for fire endurance performance evaluation was based on cable circuit integrity testing. Secondary consideration was also given to the temperature rise limits set forth in the ASTM E119 standard fire barrier test procedure. All three of the fire endurance specimens failed prematurely. Circuit integrity failures for the two fire endurance test articles with procedures-based installations were recorded at approximately 76 and 59 minutes into the exposures for a 6 inch wide and 12 inch wide cable tray respectively. Temperature excursion failures (single point) for these two test articles were noted at approximately 65 and 56 minutes respectively. The first circuit integrity failure for the full reproduction test article was recorded approximately 119 minutes into the exposure, and the first temperature excursion failure for this test article was recorded approximately 110 minutes into the exposure.

    Nowlen, S.P. [Sandia National Labs., Albuquerque, NM (United States). Components and Structures Safety and Reliability; Ross, S. [Science and Engineering Associates, Albuquerque, NM (United States)

    1994-09-01T23:59:59.000Z

    257

    Evaluation of End Mill Coatings  

    SciTech Connect

    Milling tests were run on families of High Speed Steel (HSS) end mills to determine their lives while machining 304 Stainless Steel. The end mills tested were made from M7, M42 and T15-CPM High Speed Steels. The end mills were also evaluated with no coatings as well as with Titanium Nitride (TiN) and Titanium Carbo-Nitride (TiCN) coatings to determine which combination of HSS and coating provided the highest increase in end mill life while increasing the cost of the tool the least. We found end mill made from M42 gave us the largest increase in tool life with the least increase in cost. The results of this study will be used by Cutting Tool Engineering in determining which end mill descriptions will be dropped from our tool catalog.

    L. J. Lazarus; R. L. Hester,

    2005-08-01T23:59:59.000Z

    258

    Dielectric Coatings for IACT Mirrors  

    E-Print Network (OSTI)

    Imaging Atmospheric Cherenkov Telescopes for very-high energy gamma-ray astronomy need mirror with high reflectance roughly in the wavelength between 300 and 550 nm. The current standard reflective layer of such mirrors is aluminum. Being permanently exposed to the environment they show a constant degradation over the years. New and improved dielectric coatings have been developed to enhance their resistance to environmental impact and to extend their possible lifetime. In addition, these customized coatings have an increased reflectance of over 95% and are designed to significantly lower the night-sky background contribution. The development of such coatings for mirrors with areas up to 2 m2 and low application temperatures to suite the composite materials used for the new mirror susbtrates of the Cherenkov Telescope Array (CTA) and the results of extensive durability tests are presented.

    Förster, A; Chadwick, P; Held, M

    2013-01-01T23:59:59.000Z

    259

    Phase II: Performance Evaluation of Permeable Reactive Barriers and  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Phase II: Performance Evaluation of Permeable Reactive Barriers and Phase II: Performance Evaluation of Permeable Reactive Barriers and Potential for Rejuvenation by Chemical Flushing Phase II: Performance Evaluation of Permeable Reactive Barriers and Potential for Rejuvenation by Chemical Flushing Final Report Phase II: Performance Evaluation of Permeable Reactive Barriers and Potential for Rejuvenation by Chemical Flushing U. S. Environmental Protection Agency Region 8 Support January 2004 Phase II: Performance Evaluation of Permeable Reactive Barriers and Potential for Rejuvenation by Chemical Flushing More Documents & Publications Final Report Phase II: Performance Evaluation of Permeable Reactive Barriers and Potential for Rejuvenation by Chemical Flushing Rejuvenating Permeable Reactive Barriers by Chemical Flushing

    260

    Hydraulic Conductivity of the Monticello Permeable Reactive Barrier  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Hydraulic Conductivity of the Monticello Permeable Reactive Barrier Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update Hydraulic Conductivity of the Monticello Permeable Reactive Barrier November 2005 Update More Documents & Publications Variation in Hydraulic Conductivity Over Time at the Monticello Permeable Reactive Barrier Ground-Water Table and Chemical Changes in an Alluvial Aquifer During Sustained Pumping at the Monticello, Utah, Zero-Valent Iron Treatment Cells Performance Assessment and Recommendations for Rejuvenation of a Permeable Reactive Barrier: Cotter Corporation's Cañon City, Colorado, Uranium

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    261

    DEVELOPMENT OF NIOBIUM DIFFUSION BARRIERS FOR ALUMINUM-CLAD URANIUM ALLOY FUEL ELEMENTS  

    DOE Green Energy (OSTI)

    S>Nickel was used as a diffusion barrier for Al-clad uranium alloy fuel elements, operating at 650 nif- F in organiccooled reactors. Advanced organic-moderated reactor (AOMR) concepts include operating temperatures up to 850 nif- F. Since the interdiffusion of Al --Ni is 150 times faster at 850 nif- F than at 650 nif- F, an alternate diffusion barrier is required. Subsequent studies resuited in the selection of niobium. Several techniques for bonding niobium to the U--10 Mo fuel were investigated. After considerable development effort, electron beam vacuum deposition yielded adherent, nonporous, ductile coatings. Isostatic bonding, at 1050 nif- C and 12,000 psi for 1 hr, also resulted in metallurgically bonded niobium on the major surfaces of U-10 Mo fuel plates. Roll-bonding achieved metallurgically bonded plates on small test specimens, but was never reproduced on full-size plates. Vapor phase deposition, by H/sub 2/ reduction of NbCl/sub 5/, was also partially successful, but not reproducible. Ultrasonic bonding has shown promise in spot welding tests. Plasma-spray coating and electroplating in a fused salt bath were also considered, but not actively evaluated. (auth)

    Briggs, B.N.; Friske, W.H.

    1963-10-31T23:59:59.000Z

    262

    Thermal Spraying Coatings Assisted by Laser Treatment  

    Science Conference Proceedings (OSTI)

    Coatings produced by air plasma spraying (APS) are widely used to protect components against abrasive wear and corrosion. However, APS coatings contain porosities and the properties of these coatings may thereby be reduced. To improve these properties, various methods could be proposed, including post-laser irradiation [1-4]. Firstly, PROTAL process (thermal spraying assisted by laser) has been developed as a palliative technique to degreasing and grit-blasting prior to thermal spraying. Secondly, thermal spray coatings are densified and remelted using Laser treatment. In this study, a review of microstructure coatings prepared by laser-assisted air plasma spraying will be presented. Mechanical and magnetic properties will be evaluated in relation to changes in the coating microstructure and the properties of such coatings will be compared with those of as-sprayed APS coatings.

    Fenineche, N. E.; Cherigui, M. [LERMPS-UTBM (Site de Sevenans), 90010 Belfort Cedex (France)

    2008-09-23T23:59:59.000Z

    263

    Cathode Coating (IN-09-061)  

    A team of scientists at Argonne National Laboratory has developed a special coating for the cathodes used in lithium batteries. With the coating, batteries charge and discharge more quickly, without a loss in performance.

    264

    Superhydrophobic Metal-Oxide Thin Film Coatings  

    Because of their numerous advantages and applications, considerable efforts have been expended to develop superhydrophobic (water repellant) coatings. However, traditional superhydrophobic coatings are soft in nature, with a Teflon-like surface ...

    265

    Coated foams, preparation, uses and articles  

    DOE Patents (OSTI)

    Hydrophobic cellular material is coated with a thin hydrophilic polymer skin which stretches tightly over the foam but which does not fill the cells of the foam, thus resulting in a polymer-coated foam structure having a smoothness which was not possible in the prior art. In particular, when the hydrophobic cellular material is a specially chosen hydrophobic polymer foam and is formed into arbitrarily chosen shapes prior to the coating with hydrophilic polymer, inertial confinement fusion (ICF) targets of arbitrary shapes can be produced by subsequently coating the shapes with metal or with any other suitable material. New articles of manufacture are produced, including improved ICF targets, improved integrated circuits, and improved solar reflectors and solar collectors. In the coating method, the cell size of the hydrophobic cellular material, the viscosity of the polymer solution used to coat, and the surface tension of the polymer solution used to coat are all very important to the coating.

    Duchane, D.V.; Barthell, B.L.

    1982-10-21T23:59:59.000Z

    266

    Near-Surface Engineered Environmental Barrier Integrity  

    SciTech Connect

    The INEEL Environmental Systems Research and Analysis (ESRA) program has launched a new R&D project on Near-Surface Engineered Environmental Barrier Integrity to increase knowledge and capabilities for using engineering and ecological components to improve the integrity of near-surface barriers used to confine contaminants from the public and the environment. The knowledge gained and the capabilities built will help verify the adequacy of past remedial decisions and enable improved solutions for future cleanup decisions. The research is planned to (a) improve the knowledge of degradation mechanisms (weathering, biological, geological, chemical, radiological, and catastrophic) in times shorter than service life, (b) improve modeling of barrier degradation dynamics, (c) develop sensor systems to identify degradation prior to failure, and (d) provide a better basis for developing and testing of new barrier systems to increase reliability and reduce the risk of failure. Our project combines selected exploratory studies (benchtop and field scale), coupled effects accelerated aging testing and the meso-scale, testing of new monitoring concepts, and modeling of dynamic systems. The performance of evapo- transpiration, capillary, and grout-based barriers will be examined.

    Piet, Steven James; Breckenridge, Robert Paul; Beller, John Michael; Geesey, Gill Gregroy; Glenn, David Frankie; Jacobson, Jacob Jordan; Martian, Pete; Matthern, Gretchen Elise; Mattson, Earl Douglas; Porro, Indrek; Southworth, Finis Hio; Steffler, Eric Darwin; Stormberg, Angelica Isabel; Stormberg, Gregory John; Versteeg, Roelof Jan; White, Gregory J

    2002-08-01T23:59:59.000Z

    267

    Near-Surface Engineered Environmental Barrier Integrity  

    SciTech Connect

    The INEEL Environmental Systems Research and Analysis (ESRA) program has launched a new R and D project on Near-Surface Engineered Environmental Barrier Integrity to increase knowledge and capabilities for using engineering and ecological components to improve the integrity of near-surface barriers used to confine contaminants from the public and the environment. The knowledge gained and the capabilities built will help verify the adequacy of past remedial decisions and enable improved solutions for future cleanup decisions. The research is planned to (a) improve the knowledge of degradation mechanisms (weathering, biological, geological, chemical, radiological, and catastrophic) in times shorter than service life, (b) improve modeling of barrier degradation dynamics, (c) develop sensor systems to identify degradation prior to failure, and (d) provide a better basis for developing and testing of new barrier systems to increase reliability and reduce the risk of failure. Our project combine s selected exploratory studies (benchtop and field scale), coupled effects accelerated aging testing and the meso-scale, testing of new monitoring concepts, and modeling of dynamic systems. The performance of evapo-transpiration, capillary, and grout-based barriers will be examined.

    Piet, S.J.; Breckenridge, R.P.

    2002-05-15T23:59:59.000Z

    268

    Enhanced Densification of SDC Barrier Layers  

    DOE Green Energy (OSTI)

    This technical report explores the Enhanced Densification of SCD Barrier Layers A samaria-doped ceria (SDC) barrier layer separates the lanthanum strontium cobalt ferrite (LSCF) cathode from the yttria-stabilized zirconia (YSZ) electrolyte in a solid oxide fuel cell (SOFC) to prevent the formation of electrically resistive interfacial SrZrO{sub 3} layers that arise from the reaction of Sr from the LSCF with Zr from the YSZ. However, the sintering temperature of this SDC layer must be limited to {approx}1200 C to avoid extensive interdiffusion between SDC and YSZ to form a resistive CeO{sub 2}-ZrO{sub 2} solid solution. Therefore, the conventional SDC layer is often porous and therefore not as impervious to Sr-diffusion as would be desired. In the pursuit of improved SOFC performance, efforts have been directed toward increasing the density of the SDC barrier layer without increasing the sintering temperature. The density of the SDC barrier layer can be greatly increased through small amounts of Cu-doping of the SDC powder together with increased solids loading and use of an appropriate binder system in the screen print ink. However, the resulting performance of cells with these barrier layers did not exhibit the expected increase in accordance with that achieved with the prototypical PLD SDC layer. It was determined by XRD that increased sinterability of the SDC also results in increased interdiffusivity between the SDC and YSZ, resulting in formation of a highly resistive solid solution.

    Hardy, John S.; Templeton, Jared W.; Lu, Zigui; Stevenson, Jeffry W.

    2011-09-12T23:59:59.000Z

    269

    Thermal spray coatings on Yankee dryers  

    SciTech Connect

    Several failure investigations and recent research on thermal spray coatings on Yankee dryer surfaces show at least three modes of environmentally induced degradation. Corrosion may occur with the ingress of certain chemicals into coating pores. Erosion or corrosion is manifested by streaks at local sites of high doctor blade loading. Erosion and cracking occur due to coating parameters, thermal stress, and differential expansion. While most of the results described in this paper are from investigations of molybdenum, stainless steel coatings also are discussed.

    Bowers, D.F. (Packer Engineering, Inc., Naperville, IL (United States))

    1994-08-01T23:59:59.000Z

    270

    Environmental Coatings For Gas Turbine Engine Applications  

    Science Conference Proceedings (OSTI)

    Presentation Title, Environmental Coatings For Gas Turbine Engine Applications. Author(s), Ming Fu, Roger Wustman, Jeffrey Williams, Douglas Konitzer.

    271

    Coatings for SOFC Interconnects: Design, Deposition and ...  

    Science Conference Proceedings (OSTI)

    Engineering effective combinations of oxidation resistance, electronic conductivity and SOFC component compatibility has proven challenging for coating ...

    272

    Coatings for Corrosion and Wear Resistance Applications  

    Science Conference Proceedings (OSTI)

    Apr 2, 2012 ... Long-Term Surface Restoration Effect Introduced by Advanced Lubricant Additive · Nanocomposite Thermal Spray Coatings. New Hardfacing ...

    273

    Polysilazane Based Corrosion Coatings for Magnesium  

    Science Conference Proceedings (OSTI)

    Long-Term Surface Restoration Effect Introduced by Advanced Lubricant Additive · Nanocomposite Thermal Spray Coatings. New Hardfacing Overlay Claddings ...

    274

    Sputter coating of microspherical substrates by levitation  

    SciTech Connect

    Microspheres are substantially uniformly coated with metals or nonmetals by simultaneously levitating them and sputter coating them at total chamber pressures less than 1 torr. A collimated hole structure 12 comprising a parallel array of upwardly projecting individual gas outlets 16 is machined out to form a dimple 11. Glass microballoons, which are particularly useful in laser fusion applications, can be substantially uniformly coated using the coating method and apparatus.

    Lowe, Arthur T. (Tempe, AZ); Hosford, Charles D. (Los Alamos, NM)

    1981-01-01T23:59:59.000Z

    275

    Method of forming metallic coatings on polymeric substrates and of forming graded polymeric coatings or films  

    DOE Patents (OSTI)

    The invention described herein relates to methods of forming graded polymeric coatings or films on a desired substrate and of forming metallic coatings on polymeric or other nonmetallic substrates. In particular, it relates to methods of forming such coatings or films by sorption and/or diffusion of metals into coatings or films of polymeric material deposited by conventional techniques on a desired substrate.

    Liepins, R.

    1981-03-11T23:59:59.000Z

    276

    Comparision of Stellite Coatings on Valve Steel Material Prepared ...  

    Science Conference Proceedings (OSTI)

    Oxidation Studies of HVAS-sprayed Nanostructured Coatings at Elevated Temperature · Oxide Based Thermal Sprayed Coatings for Metal Dusting Applications.

    277

    Preparing of High Silicon Coating by Composite Electrodeposition in ...  

    Science Conference Proceedings (OSTI)

    Oxidation Studies of HVAS-sprayed Nanostructured Coatings at Elevated Temperature · Oxide Based Thermal Sprayed Coatings for Metal Dusting Applications.

    278

    Improved Mechanical Properties of Cermet Coatings as a Function ...  

    Science Conference Proceedings (OSTI)

    Oxidation Studies of HVAS-sprayed Nanostructured Coatings at Elevated Temperature · Oxide Based Thermal Sprayed Coatings for Metal Dusting Applications.

    279

    APPLIEDPHYSICAL Kinetic regulation of coated vesicle secretion  

    E-Print Network (OSTI)

    that competes with the energy- consuming turnover of coat components between the membrane and the cytosol. We vesiculation of secretory membranes is impaired by the energy-consuming desorption of coat proteins, until on the membrane into elementary coat-building units, called monomers. The membrane-bound monomers then polymerize

    Sens, Pierre

    280

    Chemical vapor deposition of mullite coatings  

    DOE Patents (OSTI)

    This invention is directed to the creation of crystalline mullite coatings having uniform microstructure by chemical vapor deposition (CVD). The process comprises the steps of establishing a flow of reactants which will yield mullite in a CVD reactor, and depositing a crystalline coating from the reactant flow. The process will yield crystalline coatings which are dense and of uniform thickness.

    Sarin, Vinod (Lexington, MA); Mulpuri, Rao (Boston, MA)

    1998-01-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    281

    Fission Barriers of Compound Superheavy Nuclei  

    E-Print Network (OSTI)

    The dependence of fission barriers on the excitation energy of the compound nucleus impacts the survival probability of superheavy nuclei synthesized in heavy-ion fusion reactions. In this work, we investigate the isentropic fission barriers by means of the self-consistent nuclear density functional theory. The relationship between isothermal and isentropic descriptions is demonstrated. Calculations have been carried out for $^{264}$Fm, $^{272}$Ds, $^{278}$112, $^{292}$114, and $^{312}$124. For nuclei around $^{278}$112 produced in "cold fusion" reactions, we predict a more rapid decrease of fission barriers with excitation energy as compared to the nuclei around $^{292}$114 synthesized in "hot fusion" experiments. This is explained in terms of the difference between the ground-state and saddle-point temperatures. The effect of the particle gas is found to be negligible in the range of temperatures studied.

    J. C. Pei; W. Nazarewicz; J. A. Sheikh; A. K. Kerman

    2009-01-07T23:59:59.000Z

    282

    UNDERWATER COATINGS FOR CONTAMINATION CONTROL  

    SciTech Connect

    The Idaho National Laboratory (INL) deactivated several aging nuclear fuel storage basins. Planners for this effort were greatly concerned that radioactive contamination present on the basin walls could become airborne as the sides of the basins became exposed during deactivation and allowed to dry after water removal. One way to control this airborne contamination was to fix the contamination in place while the pool walls were still submerged. There are many underwater coatings available on the market for marine, naval and other applications. A series of tests were run to determine whether the candidate underwater fixatives were easily applied and adhered well to the substrates (pool wall materials) found in INL fuel pools. Lab-scale experiments were conducted by applying fourteen different commercial underwater coatings to four substrate materials representative of the storage basin construction materials, and evaluating their performance. The coupons included bare concrete, epoxy painted concrete, epoxy painted carbon steel, and stainless steel. The evaluation criteria included ease of application, adherence to the four surfaces of interest, no change on water clarity or chemistry, non-hazardous in final applied form and be proven in underwater applications. A proprietary two-part, underwater epoxy owned by S. G. Pinney and Associates was selected from the underwater coatings tested for application to all four pools. Divers scrubbed loose contamination off the basin walls and floors using a ship hull scrubber and vacuumed up the sludge. The divers then applied the coating using a special powered roller with two separate heated hoses that allowed the epoxy to mix at the roller surface was used to eliminate pot time concerns. The walls were successfully coated and water was removed from the pools with no detectable airborne contamination releases.

    Julia L. Tripp; Kip Archibald; Ann Marie Phillips; Joseph Campbell

    2004-02-01T23:59:59.000Z

    283

    Pressurized security barrier and alarm system  

    DOE Patents (OSTI)

    A security barrier for placement across a passageway is made up of interconnected pressurized tubing made up in a grid pattern with openings too small to allow passage. The tubing is connected to a pressure switch, located away from the barrier site, which activates an alarm upon occurrence of a pressure drop. A reinforcing bar is located inside and along the length of the tubing so as to cause the tubing to rupture and set off the alarm upon an intruder`s making an attempt to crimp and seal off a portion of the tubing by application of a hydraulic tool. Radial and rectangular grid patterns are disclosed.

    Carver, D.W.

    1994-12-31T23:59:59.000Z

    284

    Air Barriers for Residential and Commercial Buildings  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Air Barriers for Residential and Air Barriers for Residential and Commercial Buildings Diana Hun, PhD Oak Ridge National Laboratory dehun@ornl.gov 865-574-5139 April 4, 2013 BTO Program Peer Review 2 | Building Technologies Office eere.energy.gov Problem Statement & Project Focus - Air leakage is a significant contributor to HVAC loads - ~50% in residential buildings (Sherman and Matson 1997) - ~33% of heating loads in office buildings (Emmerich et al. 2005) - Airtightness of buildings listed in BTO prioritization tool

    285

    Transmission line including support means with barriers  

    DOE Patents (OSTI)

    A gas insulated transmission line includes an elongated outer sheath, a plurality of inner conductors disposed within and extending along the outer sheath, and an insulating gas which electrically insulates the inner conductors from the outer sheath. A support insulator insulatably supports the inner conductors within the outer sheath, with the support insulator comprising a main body portion including a plurality of legs extending to the outer sheath, and barrier portions which extend between the legs. The barrier portions have openings therein adjacent the main body portion through which the inner conductors extend.

    Cookson, Alan H. (Pittsburgh, PA)

    1982-01-01T23:59:59.000Z

    286

    Pressurized security barrier and alarm system  

    DOE Patents (OSTI)

    A security barrier for placement across a passageway is made up of interconnected pressurized tubing made up in a grid pattern with openings too small to allow passage. The tubing is connected to a pressure switch, located away from the barrier site, which activates an alarm upon occurrence of a pressure drop. A reinforcing bar is located inside and along the length of the tubing so as to cause the tubing to rupture and set off the alarm upon an intruder`s making an attempt to crimp and seal off a portion of the tubing by application of a hydraulic tool. Radial and rectangular grid patterns are disclosed. 7 figures.

    Carver, D.W.

    1995-04-11T23:59:59.000Z

    287

    Pressurized security barrier and alarm system  

    DOE Patents (OSTI)

    A security barrier for placement across a passageway is made up of interconnected pressurized tubing made up in a grid pattern with openings too small to allow passage. The tubing is connected to a pressure switch, located away from the barrier site, which activates an alarm upon occurrence of a pressure drop. A reinforcing bar is located inside and along the length of the tubing so as to cause the tubing to rupture and set off the alarm upon an intruder's making an attempt to crimp and seal off a portion of the tubing by application of a hydraulic tool. Radial and rectangular grid patterns are disclosed.

    Carver, Don W. (Knoxville, TN)

    1995-01-01T23:59:59.000Z

    288

    Air Barriers for Residential and Commercial Buildings  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Air Barriers for Residential and Air Barriers for Residential and Commercial Buildings Diana Hun, PhD Oak Ridge National Laboratory dehun@ornl.gov 865-574-5139 April 4, 2013 BTO Program Peer Review 2 | Building Technologies Office eere.energy.gov Problem Statement & Project Focus - Air leakage is a significant contributor to HVAC loads - ~50% in residential buildings (Sherman and Matson 1997) - ~33% of heating loads in office buildings (Emmerich et al. 2005) - Airtightness of buildings listed in BTO prioritization tool

    289

    Direct Laser Synthesis of Functional Coatings  

    DOE Green Energy (OSTI)

    The direct laser synthesis of functional coatings employs the irradiation of materials with short intensive laser pulses in a reactive atmosphere. The material is heated and plasma is ignited in the reactive atmosphere. This leads to an intensive interaction of the material with the reactive species and a coating is directly formed on the materials surface. By that functional coatings can be easily produced a fast way on steel, aluminium, and silicon by irradiation in nitrogen, methane, or even hydrogen. The influence of the processing parameters to the properties of the functional coatings will be presented for titanium nitride coating produced on titanium with the free electron laser.

    P. Schaaf; Michelle D. Shinn; E. Carpene; J. Kaspar

    2005-06-01T23:59:59.000Z

    290

    Method for making nanoporous hydrophobic coatings  

    DOE Patents (OSTI)

    A simple coating method is used to form nanoporous hydrophobic films that can be used as optical coatings. The method uses evaporation-induced self-assembly of materials. The coating method starts with a homogeneous solution comprising a hydrophobic polymer and a surfactant polymer in a selective solvent. The solution is coated onto a substrate. The surfactant polymer forms micelles with the hydrophobic polymer residing in the particle core when the coating is dried. The surfactant polymer can be dissolved and selectively removed from the separated phases by washing with a polar solvent to form the nanoporous hydrophobic film.

    Fan, Hongyou

    2013-04-23T23:59:59.000Z

    291

    Coated Particle Fuel Development Lab (CPFDL) | ORNL  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Coated Particle Fuel Development Lab Coated Particle Fuel Development Lab May 30, 2013 Computer controlled fluidized bed CVD particle coating system The Coated Particle Fuel Development Laboratory is a modern, integrated facility for laboratory scale fabrication and characterization of uranium-bearing coated particle fuel (CPF). Within this facility, tri-isotropic (TRISO) coatings are deposited on various fuel kernels by chemical vapor deposition (CVD), particles are pressed into fuel compacts for irradiation, and state-of-the-art materials property characterization is performed, all under an NQA-1 compliant Quality Assurance program. Current work includes fabrication and characterization of coated particle fuels to support the Next Generation Nuclear Plant, Advanced Small Modular Reactors, Nuclear Thermal Propulsion, and Advanced Light Water Reactor

    292

    SH Coatings LP | Department of Energy  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    SH Coatings SH Coatings LP America's Next Top Energy Innovator Challenge 10147 likes SH Coatings LP Oak Ridge National Laboratory SH Coating protects power lines from inclement weather as well as contamination from salt deposits that often cause flashovers in coastal environments. The coating can be applied to existing power lines and equipment in any field condition. The most important application is coating power lines in ice storm threatened areas. Power lines coated with SHC prevent the ice build-up that come with ice storms by repelling the rain that ordinarily falls on power lines and freezes there forming a wing on the leeward side of the line and causing the lines to gallop during wind events. This action destroys the poles carrying the lines as well as cause lines to short

    293

    SH Coatings LP | Department of Energy  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    SH Coatings SH Coatings LP America's Next Top Energy Innovator Challenge 10147 likes SH Coatings LP Oak Ridge National Laboratory SH Coating protects power lines from inclement weather as well as contamination from salt deposits that often cause flashovers in coastal environments. The coating can be applied to existing power lines and equipment in any field condition. The most important application is coating power lines in ice storm threatened areas. Power lines coated with SHC prevent the ice build-up that come with ice storms by repelling the rain that ordinarily falls on power lines and freezes there forming a wing on the leeward side of the line and causing the lines to gallop during wind events. This action destroys the poles carrying the lines as well as cause lines to short

    294

    SH Coatings LP | Department of Energy  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    SH Coatings SH Coatings LP America's Next Top Energy Innovator Challenge 10147 likes SH Coatings LP Oak Ridge National Laboratory SH Coating protects power lines from inclement weather as well as contamination from salt deposits that often cause flashovers in coastal environments. The coating can be applied to existing power lines and equipment in any field condition. The most important application is coating power lines in ice storm threatened areas. Power lines coated with SHC prevent the ice build-up that come with ice storms by repelling the rain that ordinarily falls on power lines and freezes there forming a wing on the leeward side of the line and causing the lines to gallop during wind events. This action destroys the poles carrying the lines as well as cause lines to short

    295

    Electrical contact arrangement for a coating process  

    DOE Patents (OSTI)

    A protective coating is applied to the electrically conductive surface of a reflective coating of a solar mirror by biasing a conductive member having a layer of a malleable electrically conductive material, e.g. a paste, against a portion of the conductive surface while moving an electrodepositable coating composition over the conductive surface. The moving of the electrodepositable coating composition over the conductive surface includes moving the solar mirror through a flow curtain of the electrodepositable coating composition and submerging the solar mirror in a pool of the electrodepositable coating composition. The use of the layer of a malleable electrically conductive material between the conductive member and the conductive surface compensates for irregularities in the conductive surface being contacted during the coating process thereby reducing the current density at the electrical contact area.

    Kabagambe, Benjamin; McCamy, James W; Boyd, Donald W

    2013-09-17T23:59:59.000Z

    296

    Armor systems including coated core materials  

    DOE Patents (OSTI)

    An armor system and method involves providing a core material and a stream of atomized coating material that comprises a liquid fraction and a solid fraction. An initial layer is deposited on the core material by positioning the core material in the stream of atomized coating material wherein the solid fraction of the stream of atomized coating material is less than the liquid fraction of the stream of atomized coating material on a weight basis. An outer layer is then deposited on the initial layer by positioning the core material in the stream of atomized coating material wherein the solid fraction of the stream of atomized coating material is greater than the liquid fraction of the stream of atomized coating material on a weight basis.

    Chu, Henry S. (Idaho Falls, ID); Lillo, Thomas M. (Idaho Falls, ID); McHugh, Kevin M. (Idaho Falls, ID)

    2012-07-31T23:59:59.000Z

    297

    Armor systems including coated core materials  

    SciTech Connect

    An armor system and method involves providing a core material and a stream of atomized coating material that comprises a liquid fraction and a solid fraction. An initial layer is deposited on the core material by positioning the core material in the stream of atomized coating material wherein the solid fraction of the stream of atomized coating material is less than the liquid fraction of the stream of atomized coating material on a weight basis. An outer layer is then deposited on the initial layer by positioning the core material in the stream of atomized coating material wherein the solid fraction of the stream of atomized coating material is greater than the liquid fraction of the stream of atomized coating material on a weight basis.

    2013-10-08T23:59:59.000Z

    298

    Engineered Barrier System: Physical and Chemical Environment  

    Science Conference Proceedings (OSTI)

    The conceptual and predictive models documented in this Engineered Barrier System: Physical and Chemical Environment Model report describe the evolution of the physical and chemical conditions within the waste emplacement drifts of the repository. The modeling approaches and model output data will be used in the total system performance assessment (TSPA-LA) to assess the performance of the engineered barrier system and the waste form. These models evaluate the range of potential water compositions within the emplacement drifts, resulting from the interaction of introduced materials and minerals in dust with water seeping into the drifts and with aqueous solutions forming by deliquescence of dust (as influenced by atmospheric conditions), and from thermal-hydrological-chemical (THC) processes in the drift. These models also consider the uncertainty and variability in water chemistry inside the drift and the compositions of introduced materials within the drift. This report develops and documents a set of process- and abstraction-level models that constitute the engineered barrier system: physical and chemical environment model. Where possible, these models use information directly from other process model reports as input, which promotes integration among process models used for total system performance assessment. Specific tasks and activities of modeling the physical and chemical environment are included in the technical work plan ''Technical Work Plan for: In-Drift Geochemistry Modeling'' (BSC 2004 [DIRS 166519]). As described in the technical work plan, the development of this report is coordinated with the development of other engineered barrier system analysis model reports.

    P. Dixon

    2004-04-26T23:59:59.000Z

    299

    Modeling of Residential Attics with Radiant Barriers  

    E-Print Network (OSTI)

    This paper gives a summary of the efforts at ORNL in modeling residential attics with radiant barriers. Analytical models based on a system of macroscopic heat balances have been developed. Separate models have been developed for horizontal radiant barriers laid on top of the insulation, and for radiant barriers attached to the bottom of the top chords of the attic trusses. The models include features such as a radiation interchange analysis within the attic space, convective coupling with the ventilation air, and sorption/desorption of moisture at surfaces facing the attic enclosure. The paper gives details of the models and the engineering assumptions that were made in their development. The paper also reports on the status of efforts that are underway to verify the models by comparing their predictions with the results of laboratory and field tests on residential attics and test cells, both with and without radiant barriers. Comparisons are given for a number of selected sets of experimental data. Suggestions are given for needed model refinements and additional experimental data. Plans for utilization of the models for extrapolation to seasonal and annual performance in a variety of climatic conditions are also described.

    Wilkes, K. E.

    1988-01-01T23:59:59.000Z

    300

    MENDING THE IN SITU MANIPULATION BARRIER  

    SciTech Connect

    In early 2004, the U.S. Department of Energy (DOE) Richland and Fluor Hanford requested technical assistance from the DOE Headquarters EM-23 Technical Assistance Program to provide a team of technical experts to develop recommendations for mending the In Situ Redox Manipulation (ISRM) Barrier in the 100-D Area of the Hanford Site in Washington State. To accommodate this request, EM-23 provided support to convene a group of technical experts from industry, a national laboratory, and a DOE site to participate in a 2 1/2-day workshop with the objective of identifying and recommending options to enhance the performance of the 100-D Area reactive barrier and of a planned extension to the northeast. This report provides written documentation of the team's findings and recommendations. In 1995, a plume of dissolved hexavalent chromium [Cr(VI)], which resulted from operation of the D/DR Reactors at the Hanford site, was discovered along the Columbia River shoreline and in the 100-D Area. Between 1999 and 2003, a reactive barrier using the In Situ Redox Manipulation (ISRM) technology, was installed a distance of 680 meters along the river to reduce the Cr(VI) in the groundwater. The ISRM technology creates a treatment zone within the aquifer by injection of sodium dithionite, a strong reducing agent that scavenges dissolved oxygen (DO) from the aquifer and reduces ferric iron [Fe(III)], related metals, and oxy-ions. The reduction of Fe(III) to ferrous [Fe(II)] iron provides the primary reduction capacity to reduce Cr(VI) to the +3 state, which is less mobile and less toxic. Bench-scale and field-scale treatability tests were initially conducted to demonstrate proof-of principle and to provide data for estimation of barrier longevity. These calculations estimated barrier longevity in excess of twenty years. However, several years after initial and secondary treatment, groundwater in a number of wells has been found to contain elevated chromium (Cr) concentrations, indicating some loss of reductive capacity within the aquifer. The Technical Assistance Team (TAT) was requested to perform the following activities: (1) evaluate the most probable condition(s) that has led to the presence of Cr(VI) in 12 different barrier wells (i.e. premature loss of reductive capacity), (2) recommend methods for determining the cause of the problem, (3) recommend methods for evaluating the magnitude of the problem, (4) recommend practicable method(s) for mending the barrier that involves a long-term solution, and (5) recommend methods for extending the barrier to the northeast (e.g., changing injection procedure, changing or augmenting the injected material). Since the March 2004 workshop, a decision has been made to place a hold on the barrier extension until more is known about the cause of the problem. However, the report complies with the original request for information on all of the above activities, but focuses on determining the cause of the problem and mending of the existing barrier.

    PETERSEN, S.W.

    2006-02-06T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    301

    Flexible Ultra Moisture Barrier Film for Thin-Film Photovoltaic Applications  

    Science Conference Proceedings (OSTI)

    Flexible Thin-film photovoltaic (TFPV) is a low cost alternative to incumbent c-Si PV products as it requires less volume of costly semiconductor materials and it can potentially reduce installation cost. Among the TFPV options, copper indium gallium diselenide (CIGS) has the highest efficiency and is believed to be one of the most attractive candidates to achieve PV cost reduction. However, CIGS cells are very moisture sensitive and require module water vapor transmission rate (WVTR) of less than 1x10-4 gram of water per square meter per day (g-H2O/m2/day). Successful development and commercialization of flexible transparent ultra moisture barrier film is the key to enable flexible CIGS TFPV products, and thus enable ultimate PV cost reduction. At DuPont, we have demonstrated at lab scale that we can successfully make polymer-based flexible transparent ultra moisture barrier film by depositing alumina on polymer films using atomic layer deposition (ALD) technology. The layer by layer ALD approach results in uniform and amorphous structure which effectively reduces pinhole density of the inorganic coating on the polymer, and thus allow the fabrication of flexible barrier film with WVTR of 10-5 g-H2O/m2/day. Currently ALD is a time-consuming process suitable only for high-value, relatively small substrates. To successfully commercialize the ALD-on-plastic technology for the PV industry, there is the need to scale up this technology and improve throughput. The goal of this contract work was to build a prototype demonstrating that the ALD technology could be scaled-up for commercial use. Unfortunately, the prototype failed to produce an ultra-barrier film by the close of the project.

    David M. Dean

    2012-10-30T23:59:59.000Z

    302

    Schottky barrier amorphous silicon solar cell with thin doped region adjacent metal Schottky barrier  

    DOE Patents (OSTI)

    A Schottky barrier amorphous silicon solar cell incorporating a thin highly doped p-type region of hydrogenated amorphous silicon disposed between a Schottky barrier high work function metal and the intrinsic region of hydrogenated amorphous silicon wherein said high work function metal and said thin highly doped p-type region forms a surface barrier junction with the intrinsic amorphous silicon layer. The thickness and concentration of p-type dopants in said p-type region are selected so that said p-type region is fully ionized by the Schottky barrier high work function metal. The thin highly doped p-type region has been found to increase the open circuit voltage and current of the photovoltaic device.

    Carlson, David E. (Yardley, PA); Wronski, Christopher R. (Princeton, NJ)

    1979-01-01T23:59:59.000Z

    303

    High Critical Current Coated Conductors  

    Science Conference Proceedings (OSTI)

    One of the important critical needs that came out of the DOE’s coated conductor workshop was to develop a high throughput and economic deposition process for YBCO. Metal-organic chemical vapor deposition (MOCVD) technique, the most critical steps in high technical micro fabrications, has been widely employed in semiconductor industry for various thin film growth. SuperPower has demonstrated that (Y,Gd)BCO films can be deposited rapid with world record performance. In addition to high critical current density with increased film thickness, flux pinning properties of REBCO films needs to be improved to meet the DOE requirements for various electric-power equipments. We have shown that doping with Zr can result in BZO nanocolumns, but at substantially reduced deposition rate. The primary purpose of this subtask is to develop high current density MOCVD-REBCO coated conductors based on the ion-beam assisted (IBAD)-MgO deposition process. Another purpose of this subtask is to investigate HTS conductor design optimization (maximize Je) with emphasis on stability and protection issues, and ac loss for REBCO coated conductors.

    Paranthaman, M. P.; Selvamanickam, V. (SuperPower, Inc.)

    2011-12-27T23:59:59.000Z

    304

    The Transmission of Rossby Waves through Basin Barriers  

    Science Conference Proceedings (OSTI)

    The response of a basin with a topographic barrier to spatially localized and time periodic forcing is considered. The barrier, which almost completely divides the full basin into two adjacent subbasins, is offered as a model of either a ...

    Joseph Pedlosky

    2000-03-01T23:59:59.000Z

    305

    Sensitivity of Global Mixing and Fluxes to Isolated Transport Barriers  

    Science Conference Proceedings (OSTI)

    Effects of isolated transport barriers on the global mixing and fluxes of a tracer are investigated, where a barrier is defined as a local minimum in effective diffusivity. An idealized 1D model with a prescribed diffusivity profile, with or ...

    Noboru Nakamura

    2008-12-01T23:59:59.000Z

    306

    A Climatology of Wintertime Barrier Winds off Southeast Greenland  

    Science Conference Proceedings (OSTI)

    A climatology of barrier winds along the southeastern coast of Greenland is presented based on 20 yr of winter months (1989–2008) from the ECMWF Interim Reanalysis (ERA-Interim). Barrier wind events occur predominantly at two locations: Denmark ...

    B. E. Harden; I. A. Renfrew; G. N. Petersen

    2011-09-01T23:59:59.000Z

    307

    Overcoming Barriers to Wind Development in Appalachian Coal Country  

    DOE Green Energy (OSTI)

    This research project synthesizes existing data and communication from experts to assess barriers to wind development in Pennsylvania, Maryland, West Virginia, Virginia, and Kentucky, and makes recommendations where feasible to reduce or eliminate those barriers.

    Brent Bailey; Evan Hansen

    2012-10-09T23:59:59.000Z

    308

    Layer-by-Layer Nanocoatings with Flame Retardant and Oxygen Barrier Properties: Moving Toward Renewable Systems  

    E-Print Network (OSTI)

    Numerous studies have focused on enhancing the flame retardant behavior of cotton and polyurethane foam. Some of the most commonly used treatments (e.g., brominated compounds) have raised concerns with regard to toxicity and environmental persistence. These concerns have led to significant research into the use of alternative approaches, including polymer nanocomposites prepared from more environmentally benign nanoparticles. These particles migrate to the surface from the bulk during fire exposure to form a barrier on the surface that protects the underlying polymer. This theory of fire suppression in bulk nanocomposites inspired the use of layer-by-layer (LbL) assembly to create nanocoatings in an effort to produce more effective and environmentally-benign flame retardant treatments. Negatively charged silica nanoparticles of two different sizes were paired with either positively charged silica or cationic polyethylenimine (PEI) to create thin film assemblies. When applying these films to cotton fabric, all coated fabrics retained their weave structure after being exposed to a vertical flame test, while uncoated cotton was completely destroyed. Micro combustion calorimetry confirmed that coated fabrics exhibited a reduced peak heat release rate, by as much as 20% relative to the uncoated control. Even so, this treatment would not pass the standard UL94 vertical flame test, necessitating a more effective treatment. Positively- charged chitosan (CH) was paired with montmorillonite (MMT) clay to create a renewable flame retardant nanocoating for polyurethane foam. This coating system completely stops the melting of a flexible polyurethane foam when exposed to direct flame from a butane torch, with just 10 bilayers (~ 30 nm thick). The same coated foam exhibited a reduced peak heat release rate, by as much as 52%, relative to the uncoated control. This same nanobrick wall coating is able to impart gas barrier to permeate plastic film. Multilayered thin films were assembled with "green" food contact approved materials (i.e., chitosan, polyacrylic acid (PAA) and montmorillonite clay). Only ten CH-PAA-CH-MMT quadlayers (~90 nm thick) cause polylactic acid (PLA) film to behave like PET in terms of oxygen barrier. A thirty bilayer CH-MMT assembly (~100 nm thick) on PLA exhibits an oxygen transmission rate (OTR) below the detection limit of commercial instrumentation (<= 0.005 cm^3/(m^2*day*atm)). This is the same recipe used to impart flame retardant behavior to foam, but it did not provide effective FR to cotton fabric, so a very different recipe was used. Thin films of fully renewable electrolytes, chitosan and phytic acid (PA), were deposited on cotton fabric in an effort to reduce flammability through an intumescent effect. Altering the pH of aqueous deposition solutions modifies the composition of the final nanocoating. Fabrics coated with highest PA content multilayers completely extinguished the flame and reduced peak heat release (pkHRR) and total heat release of 60% and 76%, respectively. This superior performance is believed to be due to high phosphorus content that enhances the intumescent behavior of these nanocoatings.

    Laufer, Galina 1985-

    2012-12-01T23:59:59.000Z

    309

    Quality of mini-peeled carrots as affected by genotype, minimal processing and edible coating  

    E-Print Network (OSTI)

    Minimally processed vegetables provide convenience, fresh characteristics and human health benefits. Some fresh carrots are minimally processed by abrasive peelers and washed to remove cellular fluids to produce carrot sticks, mini peeled carrots and grated carrots. Shelf life and acceptability of packaged minimally processed carrots is sometimes limited by a white discoloration that develops on abraded surfaces during storage, and poor flavor. This study was undertaken to investigate the effects of genotype, minimal processing and edible coating treatment on quality of mini-peeled carrots. Genotypic variations in total terpenoids, sugars, phenolics, total carotenoids and sensory attributes were observed (P>0.05). Among experimental hybrids evaluated TX30129 had the highest sugar and carotenoid levels. White surface discoloration on mini-peeled carrots was noted 7 days after processing. Total sugars, sucrose, total carotenoids and volatile terpenoid levels decreased during storage. Total soluble phenolics increased up to 14 days storage and then declined. Edible coating treatment effectively retarded white surface discoloration without diminishing microbial or chemical quality of mini-peeled carrots. Sensory scores for fresh carrot flavor, fresh carrot aroma and overall acceptability were higher for coated carrots. An application rate of 0.23-0.49 L/min appeared adequate for protection against surface discoloration and for retention of flavor. Terpenoid and carotene contents declined within 3 days after processing. Edible coating treatment did not affect terpenoid or carotenoid levels during storage. Apparently, Nature SeaTM coating had poor barrier characteristics since volatile terpenoids readily diffused through the coating during storage. Carotene losses during peeling were most likely associated with enzymatic activity or increased exposure to oxygen. Packaging mini-peeled carrots under reduced oxygen conditions may retard carotene loss.

    Dewi, Tjin Tjin

    1995-01-01T23:59:59.000Z

    310

    Plant Engineering: Aging Degradation of Coating Service Level 1 Coatings Summary of EPRI Coating Aging Project Activities  

    Science Conference Proceedings (OSTI)

    The nuclear industry has experienced some instances of degradation of safety-related coating systems applied inside reactor containment. Although degradation has become a concern to the industry, the industry lacked a thoroughly documented history of the degradation and its causes. In response, the Electric Power Research Institute (EPRI) conducted research to understand the coating degradation and evaluate the effects of aging on the qualified coatings used inside containment. This report describes the ...

    2011-10-24T23:59:59.000Z

    311

    Diffusion Coatings for Corrosion-Resistant Components in Coal Gasification Systems  

    Science Conference Proceedings (OSTI)

    Heat-exchangers, particle filters, turbines, and other components in integrated coal gasification combined cycle system must withstand the highly sulfiding conditions of the high-temperature coal gas over an extended period of time. The performance of components degrades significantly with time unless expensive high alloy materials are used. Deposition of a suitable coating on a low-cost alloy may improve its resistance to such sulfidation attack, and decrease capital and operating costs. The alloys used in the gasifier service include austenitic and ferritic stainless steels, nickel-chromium-iron alloys, and expensive nickel-cobalt alloys. In previous tests, we had frequently encountered problems with our steam generator that were exacerbated by the very low flow rates that we needed. During this period we installed a new computer-controlled system for injecting water into the steam generator that eliminated this problem. We also tested alloy coupons coated by using the improved procedures described in our last quarterly report. Most of these coatings were nitrided Ti and Ta coatings, either by themselves, or sometimes with barrier layers of Al and Si nitrides. The samples were tested for 300 h at 900 C in a gas stream designed to mimic the environment in the high temperature heat recovery unit (HTHRU). Three samples that showed least corrosion were exposed for an additional 100 h.

    Gopala N. Krishnan; Ripudaman Malhotra; Esperanza Alvarez; Kai-Hung Lau; Angel Sanjurjo

    2006-06-01T23:59:59.000Z

    312

    Biological barrier composition and method of use  

    DOE Patents (OSTI)

    This report describes a composition for use as barrier to the growth of biological organisms such as roots, insects and small burrowing animals. It comprises a mixture of an effective amount of a chemical substance that thwarts the movement of the biological organisms, the substance diffused in a sufficient quality of a medium so that the physical and chemical characteristics of the medium rather than adjacent soil determine the rate of diffusion of the chemical substance. In one embodiment, trifluralin, a root growth inhibitor, is mixed with bentonite clay to provide a water-impermeable, root growth inhibiting barrier for a disposal site. The amount of clay and trifluralin is determined independent of the physical characteristics of the soil of the site thus avoiding the need for engineering the trifluralin for each set of soil characteristics.

    Corey, J.C.; Murphy, C.E.

    1990-08-14T23:59:59.000Z

    313

    Diffusion barriers in modified air brazes  

    DOE Patents (OSTI)

    A method for joining two ceramic parts, or a ceramic part and a metal part, and the joint formed thereby. The method provides two or more parts, a braze consisting of a mixture of copper oxide and silver, a diffusion barrier, and then heats the braze for a time and at a temperature sufficient to form the braze into a bond holding the two or more parts together. The diffusion barrier is an oxidizable metal that forms either a homogeneous component of the braze, a heterogeneous component of the braze, a separate layer bordering the braze, or combinations thereof. The oxidizable metal is selected from the group Al, Mg, Cr, Si, Ni, Co, Mn, Ti, Zr, Hf, Pt, Pd, Au, lanthanides, and combinations thereof.

    Weil, Kenneth Scott; Hardy, John S; Kim, Jin Yong; Choi, Jung-Pyung

    2013-04-23T23:59:59.000Z

    314

    Nuclear reactor vessel fuel thermal insulating barrier  

    DOE Patents (OSTI)

    The reactor vessel of a nuclear reactor installation which is suspended from the cold leg nozzles in a reactor cavity is provided with a lower thermal insulating barrier spaced from the reactor vessel that has a hemispherical lower section that increases in volume from the center line of the reactor to the outer extent of the diameter of the thermal insulating barrier and smoothly transitions up the side walls of the vessel. The space between the thermal insulating harrier and the reactor vessel forms a chamber which can be flooded with cooling water through passive valving to directly cool the reactor vessel in the event of a severe accident. The passive inlet valve for the cooling water includes a buoyant door that is normally maintained sealed under its own weight and floats open when the cavity is Hooded. Passively opening steam vents are also provided.

    Keegan, C. Patrick; Scobel, James H.; Wright, Richard F.

    2013-03-19T23:59:59.000Z

    315

    Coated Metal Articles and Method of Making  

    DOE Patents (OSTI)

    The method of protectively coating metallic uranium which comprises dipping the metallic uranium in a molten alloy comprising about 20-75% of copper and about 80-25% of tin, dipping the coated uranium promptly into molten tin, withdrawing it from the molten tin and removing excess molten metal, thereupon dipping it into a molten metal bath comprising aluminum until it is coated with this metal, then promptly withdrawing it from the bath.

    Boller, Ernest R.; Eubank, Lowell D.

    2004-07-06T23:59:59.000Z

    316

    Natural Gas Vehicles: Status, Barriers, and Opportunities  

    NLE Websites -- All DOE Office Websites (Extended Search)

    ESD/10-4 ESD/10-4 Natural Gas Vehicles: Status, Barriers, and Opportunities Energy Systems Division About Argonne National Laboratory Argonne is a U.S. Department of Energy laboratory managed by UChicago Argonne, LLC under contract DE-AC02-06CH11357. The Laboratory's main facility is outside Chicago, at 9700 South Cass Avenue, Argonne, Illinois 60439. For information about Argonne and its pioneering science and technology programs, see www.anl.gov.

    317

    Plastic Schottky-barrier solar cells  

    DOE Patents (OSTI)

    A photovoltaic cell structure is fabricated from an active medium including an undoped polyacetylene, organic semiconductor. When a film of such material is in rectifying contact with a metallic area electrode, a Schottky-barrier junction is obtained within the body of the cell structure. Also, a gold overlayer passivates a magnesium layer on the undoped polyacetylene film. With the proper selection and location of elements a photovoltaic cell structure and solar cell are obtained.

    Waldrop, J.R.; Cohen, M.J.

    1981-12-30T23:59:59.000Z

    318

    Fission barriers and half-lives  

    Science Conference Proceedings (OSTI)

    We briefly review the development of theoretical models for the calculation of fission barriers and half-lives. We focus on how results of actual calculations in a unified macroscopic-microscopic approach provide an interpretation of the mechanisms behind some of the large number of phenomena observed in fission. As instructive examples we choose studies of the rapidly varying fission properties of elements at the end of the periodic system. 31 refs., 10 figs.

    Moeller, P.; Nix, J.R.; Swiatecki, W.J.

    1989-01-01T23:59:59.000Z

    319

    Plasma measurements with surface barrier detectors  

    DOE Green Energy (OSTI)

    A surface barrier detector system for measuring the loss rate of protons from a hydrogen plasma and their energy spectrum is described. A full width at half maximum (FWHM) resolution of 1.4 keV for 15-keV hydrogen atoms was obtained using a selected detector having a sensitive area of 3 mm/sup 2/ and a depletion depth of 700 microns.

    Futch, A.H. Jr.; Bradley, A.E.

    1969-01-27T23:59:59.000Z

    320

    Barrier Immune Radio Communications for Demand Response  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Barrier Immune Radio Communications for Demand Response Barrier Immune Radio Communications for Demand Response Title Barrier Immune Radio Communications for Demand Response Publication Type Report LBNL Report Number LBNL-2294e Year of Publication 2009 Authors Rubinstein, Francis M., Girish Ghatikar, Jessica Granderson, Paul Haugen, Carlos Romero, and David S. Watson Keywords technologies Abstract Various wireless technologies were field-tested in a six-story laboratory building to identify wireless technologies that can scale for future DR applications through very low node density power consumption, and unit cost. Data analysis included analysis of the signal-to-noise ratio (SNR), packet loss, and link quality at varying power levels and node densities. The narrowband technologies performed well, penetrating the floors of the building with little loss and exhibiting better range than the wideband technology. 900 MHz provided full coverage at 1 watt and substantially complete coverage at 500 mW at the test site. 900 MHz was able to provide full coverage at 100 mW with only one additional relay transmitter, and was the highest-performing technology in the study. 2.4 GHz could not provide full coverage with only a single transmitter at the highest power level tested (63 mW). However, substantially complete coverage was provided at 2.4 GHz at 63 mW with the addition of one repeater node.

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    321

    Oxynitride Thin Film Barriers for PV Packaging  

    DOE Green Energy (OSTI)

    Dielectric thin-film barrier and adhesion-promoting layers consisting of silicon oxynitride materials (SiOxNy, with various stoichiometry) were investigated. For process development, films were applied to glass (TCO, conductive SnO2:F; or soda-lime), polymer (PET, polyethylene terephthalate), aluminized soda-lime glass, or PV cell (a-Si, CIGS) substrates. Design strategy employed de-minimus hazard criteria to facilitate industrial adoption and reduce implementation costs for PV manufacturers or suppliers. A restricted process window was explored using dilute compressed gases (3% silane, 14% nitrous oxide, 23% oxygen) in nitrogen (or former mixtures, and 11.45% oxygen mix in helium and/or 99.999% helium dilution) with a worst-case flammable and non-corrosive hazard classification. Method employed low radio frequency (RF) power, less than or equal to 3 milliwatts per cm2, and low substrate temperatures, less than or equal to 100 deg C, over deposition areas less than or equal to 1000 cm2. Select material properties for barrier film thickness (profilometer), composition (XPS/FTIR), optical (refractive index, %T and %R), mechanical peel strength and WVTR barrier performance are presented.

    Glick, S. H.; delCueto, J. A.; Terwilliger, K. M.; Jorgensen, G. J.; Pankow, J. W.; Keyes, B. M.; Gedvilas, L. M.; Pern, F. J.

    2005-11-01T23:59:59.000Z

    322

    ENGINEERED BARRIER SYSTEM: PHYSICAL AND CHEMICAL ENVIRONMENT  

    Science Conference Proceedings (OSTI)

    The purpose of this report is to describe the evolution of the physical and chemical environmental conditions within the waste emplacement drifts of the repository, including the drip shield and waste package surfaces. The abstraction model is used in the total system performance assessment for the license application (TSPA LA) to assess the performance of the engineered barrier system and the waste form. This report develops and documents a set of these abstraction-level models that describe the engineered barrier system physical and chemical environment. Where possible, these models use information directly from other reports as input, which promotes integration among process models used for TSPA-LA. Specific tasks and activities of modeling the physical and chemical environment are included in ''Technical Work Plan for: Near-Field Environment and Transport In-Drift Geochemistry Model Report Integration'' (BSC 2004 [DIRS 171156], Section 1.2.2). As described in the technical work plan, the development of this report is coordinated with the development of other engineered barrier system reports.

    G.H. Nieder-Westermann

    2005-04-07T23:59:59.000Z

    323

    Substrate solder barriers for semiconductor epilayer growth  

    DOE Patents (OSTI)

    During the growth of compound semiconductors by epitaxial processes, substrates are typically mounted to a support. In molecular beam epitaxy, mounting is done using indium as a solder. This method has two drawbacks: the indium reacts with the substrate, and it is difficult to uniformly wet the back of a large diameter substrate. Both of these problems have been successfully overcome by sputter coating the back of the substrate with a thin layer of tungsten carbide or tungsten carbide and gold. In addition to being compatible with the growth of high quality semiconductor epilayers this coating is also inert in all standard substate cleaning etchants used for compound semiconductors, and provides uniform distribution of energy in radiant heating. 1 tab.

    Drummond, T.J.; Ginley, D.S.; Zipperian, T.E.

    1987-10-23T23:59:59.000Z

    324

    Sulfur-Resistant Silicone Conformal Coatings  

    Science Conference Proceedings (OSTI)

    An Overview of Hot Corrosion in Waste to Energy Boiler Environment and Its Remedies · Characterization of Copper Coatings on ASTM B221 Alloy by Low ...

    325

    SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS  

    E-Print Network (OSTI)

    of the University of California, nor any of their employees,of the University of California. The views and opinions ofof the University of California. SELECTIVE ABSORBER COATED

    Lampert, Carl M.

    2013-01-01T23:59:59.000Z

    326

    Coating Industry Response to Legislative Pressure  

    Science Conference Proceedings (OSTI)

    Table 2   Summary of existing federal regulations affecting the coatings industry...also have their own internal regulations, directives, and guidelines

    327

    Graphitized Conductive Carbon Coatings for Composite Electrodes ...  

    Biomass and Biofuels; Building Energy Efficiency; ... The fast plasma discharge and subsequent rapid pyrolysis of an organic precursor result in a uniform coating of ...

    328

    Coating and Surface Technologies for Turbine Airfoils  

    Science Conference Proceedings (OSTI)

    more difficult, coatings and other surface technologies are becoming more ... to developing higher strength single crystal superalloys. Although it has been ...

    329

    ADVANCES IN COATINGS TECHNOLOGIES II: I - TMS  

    Science Conference Proceedings (OSTI)

    The DARPA program in advanced thin film coatings is developing innovative technologies to eliminate volatile organic compounds, heavy metals and other ...

    330

    Photovoltaic Electrical Contacts and Cell Coatings  

    Energy.gov (U.S. Department of Energy (DOE))

    The outermost layers of photovoltaic (PV) cell, or solar cell, are the electrical contacts and anti-reflective coating. These layers provide essential functions to the cell's operation.

    331

    Protective Coatings for Molybdenum – Industrial Processing and ...  

    Science Conference Proceedings (OSTI)

    Symposium, Advanced Protective Coatings for Refractory Metals and Alloys ... In particular molybdenum is a state of the art structural material in glass ...

    332

    Solar Selective Absorption Coatings - Energy Innovation Portal  

    Sandia has developed a new class of solar selective absorber coatings that significantly improve the thermal conversion efficiency of solar units by reducing ...

    333

    Determining the Energy Barrier for Decay out of Superdeformed Bands  

    E-Print Network (OSTI)

    An asymptotically exact quantum mechanical calculation of the matrix elements for tunneling through an asymmetric barrier is combined with the two-state statistical model for decay out of superdeformed bands to determine the energy barrier (as a function of spin) separating the superdeformed and normal-deformed wells for several nuclei in the 190 and 150 mass regions. The spin-dependence of the barrier leading to sudden decay out is shown to be consistent with the decrease of a centrifugal barrier with decreasing angular momentum. Values of the barrier frequency in the two mass regions are predicted.

    B. R. Barrett; J. Bürki; D. M. Cardamone; C. A. Stafford; D. L. Stein

    2008-09-06T23:59:59.000Z

    334

    Boron hydride polymer coated substrates  

    DOE Patents (OSTI)

    A method is disclosed for coating a substrate with a uniformly smooth layer of a boron hydride polymer. The method comprises providing a reaction chamber which contains the substrate and the boron hydride plasma. A boron hydride feed stock is introduced into the chamber simultaneously with the generation of a plasma discharge within the chamber. A boron hydride plasma of ions, electrons and free radicals which is generated by the plasma discharge interacts to form a uniformly smooth boron hydride polymer which is deposited on the substrate.

    Pearson, R.K.; Bystroff, R.I.; Miller, D.E.

    1986-08-27T23:59:59.000Z

    335

    Boron hydride polymer coated substrates  

    DOE Patents (OSTI)

    A method is disclosed for coating a substrate with a uniformly smooth layer of a boron hydride polymer. The method comprises providing a reaction chamber which contains the substrate and the boron hydride plasma. A boron hydride feed stock is introduced into the chamber simultaneously with the generation of a plasma discharge within the chamber. A boron hydride plasma of ions, electrons and free radicals which is generated by the plasma discharge interacts to form a uniformly smooth boron hydride polymer which is deposited on the substrate.

    Pearson, Richard K. (Pleasanton, CA); Bystroff, Roman I. (Livermore, CA); Miller, Dale E. (Livermore, CA)

    1987-01-01T23:59:59.000Z

    336

    Underwater Coatings for Contamination Control  

    Science Conference Proceedings (OSTI)

    The Idaho National Engineering and Environmental Laboratory (INEEL) is deactivating several fuel storage basins. Airborne contamination is a concern when the sides of the basins are exposed and allowed to dry during water removal. One way of controlling this airborne contamination is to fix the contamination in place while the pool walls are still submerged. There are many underwater coatings available on the market that are used in marine, naval and other applications. A series of tests were run to determine whether the candidate underwater fixatives are easily applied and adhere well to the substrates (pool wall materials) found in INEEL fuel pools. The four pools considered included 1) Test Area North (TAN-607) with epoxy painted concrete walls; 2) Idaho Nuclear Technology and Engineering Center (INTEC) (CPP-603) with bare concrete walls; 3) Materials Test Reactor (MTR) Canal with stainless steel lined concrete walls; and 4) Power Burst Facility (PBF-620) with stainless steel lined concrete walls on the bottom and epoxy painted carbon steel lined walls on the upper portions. Therefore, the four materials chosen for testing included bare concrete, epoxy painted concrete, epoxy painted carbon steel, and stainless steel. The typical water temperature of the pools varies from 55oF to 80oF dependent on the pool and the season. These tests were done at room temperature. The following criteria were used during this evaluation. The underwater coating must: · Be easy to apply · Adhere well to the four surfaces of interest · Not change or have a negative impact on water chemistry or clarity · Not be hazardous in final applied form · Be proven in other underwater applications. In addition, it is desirable for the coating to have a high pigment or high cross-link density to prevent radiation from penetrating. This paper will detail the testing completed and the test results. A proprietary two-part, underwater epoxy owned by S. G. Pinney and Associates was selected to be applied by divers after scrubbing loose contamination off the basin walls and floors using a ship hull scrubber and vacuuming up the sludge. A special powered roller with two separate heated hoses that allowed the epoxy to mix at the roller surface was used to eliminate pot time concerns. The walls were successfully coated and water was removed from the pool with no airborne contamination problems.

    Julia L. Tripp; Kip Archibald; Ann-Marie Phillips; Joseph Campbell

    2004-02-01T23:59:59.000Z

    337

    Review of potential subsurface permeable barrier emplacement and monitoring technologies  

    SciTech Connect

    This report focuses on subsurface permeable barrier technologies potentially applicable to existing waste disposal sites. This report describes candidate subsurface permeable barriers, methods for emplacing these barriers, and methods used to monitor the barrier performance. Two types of subsurface barrier systems are described: those that apply to contamination.in the unsaturated zone, and those that apply to groundwater and to mobile contamination near the groundwater table. These barriers may be emplaced either horizontally or vertically depending on waste and site characteristics. Materials for creating permeable subsurface barriers are emplaced using one of three basic methods: injection, in situ mechanical mixing, or excavation-insertion. Injection is the emplacement of dissolved reagents or colloidal suspensions into the soil at elevated pressures. In situ mechanical mixing is the physical blending of the soil and the barrier material underground. Excavation-insertion is the removal of a soil volume and adding barrier materials to the space created. Major vertical barrier emplacement technologies include trenching-backfilling; slurry trenching; and vertical drilling and injection, including boring (earth augering), cable tool drilling, rotary drilling, sonic drilling, jetting methods, injection-mixing in drilled holes, and deep soil mixing. Major horizontal barrier emplacement technologies include horizontal drilling, microtunneling, compaction boring, horizontal emplacement, longwall mining, hydraulic fracturing, and jetting methods.

    Riggsbee, W.H.; Treat, R.L.; Stansfield, H.J.; Schwarz, R.M. [Ebasco Environmental, Richland, WA (United States); Cantrell, K.J. [Pacific Northwest Lab., Richland, WA (United States); Phillips, S.J. [Westinghouse Hanford Co., Richland, WA (United States)

    1994-02-01T23:59:59.000Z

    338

    Ceramic wash-coat for catalyst support - Energy Innovation Portal  

    A wash-coat (16) for use as a support for an active catalyst species (18) and a catalytic combustor component (10) incorporating such wash-coat. The wash-coat is a ...

    339

    Process to minimize cracking of pyrolytic carbon coatings  

    DOE Patents (OSTI)

    Carbon-coated microspheroids useful as fuels in nuclear reactors are produced with a low percentage of cracked coatings and are imparted increased strength and mechanical stability characteristics by annealing immediately after the carbon coating processes.

    Lackey, Jr., Walter J. (Oak Ridge, TN); Sease, John D. (Knoxville, TN)

    1978-01-01T23:59:59.000Z

    340

    POLYTETRAFLUOROETHYLENE-RICH POLYPHENLENESULFIDE BLEND TOP COATINGS FOR MITIGATING CORROSION OF CARBON STEEL IN 300 DEGREE CELCIUS BRINE.  

    DOE Green Energy (OSTI)

    We evaluated usefulness of a coating system consisting of an underlying polyphenylenesulfide (PPS) layer and top polytetrafluoroethylene (PTFE)-blended PPS layer as low friction, water repellent, anti-corrosion barrier film for carbon steel steam separators in geothermal power plants. The experiments were designed to obtain information on kinetic coefficient of friction, surface free energy, hydrothermal oxidation, alteration of molecular structure, thermal stability, and corrosion protection of the coating after immersing the coated carbon steel coupons for up to 35 days in CO{sub 2}-laden brine at 300 C. The superficial layer of the assembled coating was occupied by PTFE self-segregated from PPS during the melt-flowing process of this blend polymer; it conferred an outstanding slipperiness and water repellent properties because of its low friction and surface free energy. However, PTFE underwent hydrothermal oxidation in hot brine, transforming its molecular structure into an alkylated polyfluorocarboxylate salt complex linked to Na. Although such molecular transformation increased the friction and surface free energy, and also impaired the thermal stability of PTFE, the top PTFE-rich PPS layer significantly contributed to preventing the permeation of moisture and corrosive electrolytes through the coating film, so mitigating the corrosion of carbon steel.

    SUGAMA, T.; JUNG, D.

    2006-06-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    341

    Study on machined thermal sprayed coatings adherence  

    Science Conference Proceedings (OSTI)

    Thermal sprayed coatings represent a modern way of solving real important problems, like repairing worn parts working under severe wearing conditions or, ensuring efficient corrosion protection of parts used in sea, as platform, bridges, or obtaining ... Keywords: adherence, cylindrical turning, metallizing process, sample, thermal sprayed coatings, transducer

    Mihaiela Iliescu; Mihnea Costoiu; Sergiu Tonoiu

    2008-11-01T23:59:59.000Z

    342

    Cationic electrodepositable coating composition comprising lignin  

    DOE Patents (OSTI)

    A cationic electrodepositable coating composition is disclosed. The present invention in directed to a cationic electrodepositable coating composition comprising a lignin-containing cationic salt resin, that comprises (A) the reaction product of: lignin, an amine, and a carbonyl compound; (B) the reaction product of lignin, epichlorohydrin, and an amine; or (C) combinations thereof.

    Fenn, David; Bowman, Mark P; Zawacky, Steven R; Van Buskirk, Ellor J; Kamarchik, Peter

    2013-07-30T23:59:59.000Z

    343

    Advanced Coating Development for Gas Turbine Components  

    Science Conference Proceedings (OSTI)

    Sacrificial, oxidation-resistant coatings on turbine blades in high-firing temperature gas turbines are wearing out at an unacceptably rapid rate, resulting in excessive downtime and repair costs for turbine operators. This report summarizes the results of an exploratory development project that assessed the feasibility of decelerating the degradation rate of an MCrAlY coating on several turbine blade alloys.

    2000-08-01T23:59:59.000Z

    344

    Graded coatings for metallic implant alloys  

    E-Print Network (OSTI)

    firing time and temperature on 6P57 coatings on Ti6Al4V and 6P50 on Co-firing time and temperature on the adhesion of coatings manufactured with glass 6P57 on Ti6Al4V and glass 6P50 on Co-

    Saiz, Eduardo; Tomsia, Antoni P.; Fujino, Shigeru; Gomez-Vega, Jose M.

    2002-01-01T23:59:59.000Z

    345

    Nanoscale Reinforced, Polymer Derived Ceramic Matrix Coatings  

    Science Conference Proceedings (OSTI)

    The goal of this project was to explore and develop a novel class of nanoscale reinforced ceramic coatings for high temperature (600-1000 C) corrosion protection of metallic components in a coal-fired environment. It was focused on developing coatings that are easy to process and low cost. The approach was to use high-yield preceramic polymers loaded with nano-size fillers. The complex interplay of the particles in the polymer, their role in controlling shrinkage and phase evolution during thermal treatment, resulting densification and microstructural evolution, mechanical properties and effectiveness as corrosion protection coatings were investigated. Fe-and Ni-based alloys currently used in coal-fired environments do not possess the requisite corrosion and oxidation resistance for next generation of advanced power systems. One example of this is the power plants that use ultra supercritical steam as the working fluid. The increase in thermal efficiency of the plant and decrease in pollutant emissions are only possible by changing the properties of steam from supercritical to ultra supercritical. However, the conditions, 650 C and 34.5 MPa, are too severe and result in higher rate of corrosion due to higher metal temperatures. Coating the metallic components with ceramics that are resistant to corrosion, oxidation and erosion, is an economical and immediate solution to this problem. Good high temperature corrosion protection ceramic coatings for metallic structures must have a set of properties that are difficult to achieve using established processing techniques. The required properties include ease of coating complex shapes, low processing temperatures, thermal expansion match with metallic structures and good mechanical and chemical properties. Nanoscale reinforced composite coatings in which the matrix is derived from preceramic polymers have the potential to meet these requirements. The research was focused on developing suitable material systems and processing techniques for these coatings. In addition, we investigated the effect of microstructure on the mechanical properties and oxidation protection ability of the coatings. Coatings were developed to provide oxidation protection to both ferritic and austentic alloys and Ni-based alloys. The coatings that we developed are based on low viscosity pre-ceramic polymers. Thus they can be easily applied to any shape by using a variety of techniques including dip-coating, spray-coating and painting. The polymers are loaded with a variety of nanoparticles. The nanoparticles have two primary roles: control of the final composition and phases (and hence the properties); and control of the shrinkage during thermal decomposition of the polymer. Thus the selection of the nanoparticles was the most critical aspect of this project. Based on the results of the processing studies, the performance of selected coatings in oxidizing conditions (both static and cyclic) was investigated.

    Rajendra Bordia

    2009-07-31T23:59:59.000Z

    346

    Method of coating metal surfaces to form protective metal coating thereon  

    DOE Patents (OSTI)

    A process is disclosed for forming a protective metal coating on a metal surface using a flux consisting of an alkali metal fluoride, an alkaline earth metal fluoride, an alkali metal fluoaluminate, an alkali metal fluosilicate, and mixtures thereof. The flux, in particulate form, is mixed with particles of a metal coating material which may comprise aluminum, chromium, mixtures thereof, and alloys containing at least 50 wt. % aluminum and the particulate mixture is applied to the metal surface in a single step, followed by heating the coated metal surface to a temperature sufficient to cause the metal coating material to react with the metal surface to form a protective reaction product in the form of a metal coating bonded to the metal surface. The metal surface which reacts with the metal coating material to form the protective coating may comprise Fe, Co, Ni, Ti, V, Cr, Mn, Zr, Nb, Mo, Tc, Hf, Ta, W, Re and alloys thereof.

    Krikorian, Oscar H. (Danville, CA); Curtis, Paul G. (Tracy, CA)

    1992-01-01T23:59:59.000Z

    347

    Insulator coating for high temperature alloys method for producing insulator coating for high temperature alloys  

    DOE Patents (OSTI)

    A method for fabricating an electrically insulating coating on a surface is disclosed comprising coating the surface with a metal, and reacting the metal coated surface with a nonmetal so as to create a film on the metal-coated surface. Alternatively, the invention provides for a method for producing a noncorrosive, electrically insulating coating on a surface saturated with a nonmetal comprising supplying a molten fluid, dissolving a metal in the molten fluid to create a mixture, and contacting the mixture with the saturated surface. Lastly, the invention provides an electrically insulative coating comprising an underlying structural substrate coated with an oxide or nitride compound. This invention has applications to breeding blankets for fusion reactors as well as to alkali metal thermal to electric converters.

    Park, J.H.

    1994-12-31T23:59:59.000Z

    348

    Method of coating metal surfaces to form protective metal coating thereon  

    DOE Patents (OSTI)

    A process is disclosed for forming a protective metal coating on a metal surface using a flux consisting of an alkali metal fluoride, an alkaline earth metal fluoride, an alkali metal fluoaluminate, an alkali metal fluosilicate, and mixtures thereof. The flux, in particulate form, is mixed with particles of a metal coating material which may comprise aluminum, chromium, mixtures thereof, and alloys containing at least 50 wt. % aluminum and the particulate mixture is applied to the metal surface in a single step, followed by heating the coated metal surface to a temperature sufficient to cause the metal coating material to react with the metal surface to form a protective reaction product in the form of a metal coating bonded to the metal surface. The metal surface which reacts with the metal coating material to form the protective coating may comprise Fe, Co, Ni, Ti, V, Cr, Mn, Zr, Nb, Mo, Tc, Hf, Ta, W, Re and alloys thereof. 1 figure.

    Krikorian, O.H.; Curtis, P.G.

    1992-03-31T23:59:59.000Z

    349

    The HMDS Coating Flaw Removal Tool  

    Science Conference Proceedings (OSTI)

    In many high energy laser systems, optics with HMDS sol gel antireflective coatings are placed in close proximity to each other making them particularly susceptible to certain types of strong optical interactions. During the coating process, halo shaped coating flaws develop around surface digs and particles. Depending on the shape and size of the flaw, the extent of laser light intensity modulation and consequent probability of damaging downstream optics may increase significantly. To prevent these defects from causing damage, a coating flaw removal tool was developed that deploys a spot of decane with a syringe and dissolves away the coating flaw. The residual liquid is evacuated leaving an uncoated circular spot approximately 1mm in diameter. The resulting uncoated region causes little light intensity modulation and thus has a low probability of causing damage in optics downstream from the mitigated flaw site.

    Monticelli, M V; Nostrand, M C; Mehta, N; Kegelmeyer, L; Johnson, M A; Fair, J; Widmayer, C

    2008-10-24T23:59:59.000Z

    350

    Cooling Energy Measurements of Houses with Attics Containing Radiant Barriers  

    E-Print Network (OSTI)

    Tests were conducted by Oak Ridge National Laboratory (ORNL) to determine the magnitude of the energy savings brought about by installing radiant barriers in the attics of single-family houses. The radiant barrier used for this test was a product with two reflective aluminum surfaces on a kraft paper base. The radiant barrier has the potential to reduce the radiant heat transfer component impinging on the fiberglass attic insulation. Working as a system in conjunction with an air space, the radiant barrier could theoretically block up to 95% of far-infrared radiation heat transfer. The experiment was conducted in three unoccupied research houses that are operated by ORNL. One house was used as the control house (no barrier was installed), while the other two were used to test the two different methods for installing the radiant barriers. In one house, the barrier was laid on top of the attic fiberglass batt insulation, and in the other house, the barrier was attached to the underside of the roof trusses. The attics of all three houses were insulated with kraft paper faced nominal R-19 fiberglass batt insulation. The results showed a savings in the cooling loads of 21% when the radiant barrier was laid on top of the attic fiberglass insulation and 13% with the radiant barrier attached to the underside of the roof trusses. The savings in electrical consumption was 17% and 9%, respectively. The electrical consumption data and the cooling load data indicated that the most effective way of installing the foil was to lay it on top of the fiberglass batt insulation. The radiant barriers reduced the measured peak ceiling heat fluxes by 39% for the case where the barrier was laid on top of the attic fiberglass insulation. The radiant barrier reduced the integrated heat flows from the attic to house by approximately 30-35% over a 7-day time period.

    Levins, W. P.; Karnitz, M. A.; Knight, D. K.

    1986-01-01T23:59:59.000Z

    351

    Comparative Study of Aluminide Coatings on Mild Steel by Different ...  

    Science Conference Proceedings (OSTI)

    Corrosion Inhibition of a Hybrid Organic/Inorganic Coating by Release on Demand ... High Energy Density Coating Processing for Oil and Gas Applications .

    352

    Increased cycling efficiency and rate capability of copper-coated...  

    NLE Websites -- All DOE Office Websites (Extended Search)

    cycling efficiency and rate capability of copper-coated silicon anodes in lithium-ion batteries Title Increased cycling efficiency and rate capability of copper-coated silicon...

    353

    ORNL’s Suppy p g gyerhydrophobic Coatings Technology and ...  

    ORNL’s Suppy p g gyerhydrophobic Coatings Technology and Some Potential Applications ... (e gicing coatings on power lines, insulators, infrastructure (e.g.

    354

    Ultra-High Temperature Ceramic Composite Coatings for Oxidation ...  

    Science Conference Proceedings (OSTI)

    Our protective coatings were evaluated for thermal-shock performance at the ... that our coatings provide oxidation protection of C-C composites at temperature.

    355

    Thermal-Mechanical Fatigue Life Model for Coated Superalloy ...  

    Science Conference Proceedings (OSTI)

    in an aggressive combustion gas environment. Coating ..... M.I. Wood and G.F. Harrison, "Modeling The Deformation Of Coated. Superalloys Under Thermal ...

    356

    Energy Basics: Photovoltaic Electrical Contacts and Cell Coatings  

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Contacts and Cell Coatings The outermost layers of photovoltaic (PV) cell, or solar cell, are the electrical contacts and anti-reflective coating. These layers provide...

    357

    Ultrathin high-temperature oxidation-resistant coatings of hexagonal...  

    NLE Websites -- All DOE Office Websites (Extended Search)

    coatings for nickel up to 1,100 C in oxidizing atmospheres. Furthermore, graphene layers coated with a few hexagonal boron nitride layers are also protected at...

    358

    Advances in Zinc-Coated Steel Sheet: Processing and Properties  

    Science Conference Proceedings (OSTI)

    Influences of Ni-Pretreatments on Galvanized Coatings · Surface Performance of Environment-Friendly Galvanized Sheet for Appliance · Thermal Spray Coating ...

    359

    Barrier Immune Radio Communications for Demand Response  

    NLE Websites -- All DOE Office Websites (Extended Search)

    94E 94E Barrier Immune Radio Communications for Demand Response F. Rubinstein, G. Ghatikar, J. Granderson, D. Watson Lawrence Berkeley National Laboratory P. Haugen, C. Romero Lawrence Livermore National Laboratory February 2009 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe

    360

    Wind energy: legal issues and institutional barriers  

    DOE Green Energy (OSTI)

    Before the potential of wind energy can be realized, large-scale commercialization will have to occur. Standing in the way of commercial development are various institutional and legal barriers. These include (1) possible conflicts with existing zoning and other land-use planning schemes, (2) the question of guaranteeing access to the wind, (3) possible tort and environmental law issues raised by WECS operation, and (4) the critical problem of creating financial incentives. The implications of each of these issues and solutions where practicable are presented.

    Coit, L.

    1979-06-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    361

    Pricing and hedging a barrier option  

    E-Print Network (OSTI)

    Barrier options are options where the payoff depends on whether the underlying asset's price reaches a certain level during a certain period of time. This path-dependency makes these options difficult to manage in practice. In this work, general methods of pricing and hedging are proposed. General properties of the Black - Scholes model are studied. Three methods of pricing are discussed and compared. Hedging issues are analyzed. Finally an improvement of the Black - Scholes model for the stock's price is proposed to take into account the stochastic aspect of the stock price volatility.

    Bogossian, Alan

    2002-01-01T23:59:59.000Z

    362

    Coated Fiber Neutron Detector Test  

    Science Conference Proceedings (OSTI)

    Radiation portal monitors used for interdiction of illicit materials at borders include highly sensitive neutron detection systems. The main reason for having neutron detection capability is to detect fission neutrons from plutonium. The currently deployed radiation portal monitors (RPMs) from Ludlum and Science Applications International Corporation (SAIC) use neutron detectors based upon 3He-filled gas proportional counters, which are the most common large neutron detector. There is a declining supply of 3He in the world, and thus, methods to reduce the use of this gas in RPMs with minimal changes to the current system designs and sensitivity to cargo-borne neutrons are being investigated. Reported here are the results of tests of the 6Li/ZnS(Ag)-coated non-scintillating plastic fibers option. This testing measured the required performance for neutron detection efficiency and gamma ray rejection capabilities of a system manufactured by Innovative American Technology (IAT).

    Lintereur, Azaree T.; Ely, James H.; Kouzes, Richard T.; Stromswold, David C.

    2009-10-23T23:59:59.000Z

    363

    DOE Discussion on Small Business Contract Barriers | Department of Energy  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Discussion on Small Business Contract Barriers Discussion on Small Business Contract Barriers DOE Discussion on Small Business Contract Barriers March 5, 2013 - 12:00pm Addthis EM Deputy Assistant Secretary for Acquisition and Project Management Jack Surash speaks during the session on barriers small businesses face competing for prime contracts. EM Deputy Assistant Secretary for Acquisition and Project Management Jack Surash speaks during the session on barriers small businesses face competing for prime contracts. Pictured at the session on barriers in small business contracting, left to right, are Jim Fiore of Fiore Consulting; John Coffman of DeNuke Contracting Services, Inc.; John Hale III of the DOE Office of Small and Disadvantaged Business Utilization; Jack Surash of EM; and Matt Moeller of Dade Moeller.

    364

    Underground barrier construction apparatus with soil-retaining shield  

    DOE Patents (OSTI)

    An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably one which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground, a shield means for maintaining the void, and injection means for inserting barrier-forming material into the void. In one embodiment, the digging means is a continuous cutting chain. Mounted on the continuous cutting chain are cutter teeth for cutting through soil and discharge paddles for removing the loosened soil. This invention includes a barrier placement machine, a method for building an underground horizontal containment barrier using the barrier placement machine, and the underground containment system. Preferably the underground containment barrier goes underneath and around the site to be contained in a bathtub-type containment.

    Gardner, Bradley M. (Idaho Falls, ID); Smith, Ann Marie (Pocatello, ID); Hanson, Richard W. (Spokane, WA); Hodges, Richard T. (Deer Park, WA)

    1998-01-01T23:59:59.000Z

    365

    Cooling energy measurements of houses with attics containing radiant barriers  

    Science Conference Proceedings (OSTI)

    Tests were conducted by Oak Ridge National Laboratory (ORNL) to determine the magnitude of the energy savings brought about by installing radiant barriers in the attics of single-family houses. The radiant barrier used for this test was a product with two reflective aluminum surfaces on a kraft paper base. The radiant barrier has the potential to reduce the radiant heat transfer component impinging on the fiberglass attic insulation. Working as a system in conjunction with an air space, the radiant barrier could theoretically block up to 95% of far-infrared radiation heat transfer. The results showed a savings in the cooling loads of 21% when the radiant barrier was laid on top of the attic fiberglass insulation and 13% with the radiant barrier attached to the underside of the roof trusses. The savings in electrical consumption was 17% and 9%, respectively.

    Levins, W.P.; Karnitz, M.A.; Knight, D.K.

    1986-01-01T23:59:59.000Z

    366

    Multiple capillary biochemical analyzer with barrier member  

    DOE Patents (OSTI)

    A multiple capillary biochemical analyzer for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal to noise ratio.

    Dovichi, Norman J. (Edmonton, CA); Zhang, Jian Z. (Edmonton, CA)

    1996-01-01T23:59:59.000Z

    367

    Multiple capillary biochemical analyzer with barrier member  

    DOE Patents (OSTI)

    A multiple capillary biochemical analyzer is disclosed for sequencing DNA and performing other analyses, in which a set of capillaries extends from wells in a microtiter plate into a cuvette. In the cuvette the capillaries are held on fixed closely spaced centers by passing through a sandwich construction having a pair of metal shims which squeeze between them a rubber gasket, forming a leak proof seal for an interior chamber in which the capillary ends are positioned. Sheath fluid enters the chamber and entrains filament sample streams from the capillaries. The filament sample streams, and sheath fluid, flow through aligned holes in a barrier member spaced close to the capillary ends, into a collection chamber having a lower glass window. The filament streams are illuminated above the barrier member by a laser, causing them to fluoresce. The fluorescence is viewed end-on by a CCD camera chip located below the glass window. The arrangement ensures an equal optical path length from all fluorescing spots to the CCD chip and also blocks scattered fluorescence illumination, providing more uniform results and an improved signal-to-noise ratio. 12 figs.

    Dovichi, N.J.; Zhang, J.Z.

    1996-10-22T23:59:59.000Z

    368

    On Coating Durability of Polymer Coated Sheet Metal under Plastic Deformation  

    E-Print Network (OSTI)

    Polymer coated sheet metal components find diverse applications in many industries. The manufacturing of the components generally involves forming of sheet metal into the desired shape and coating of the formed part with organic coating. An alternative manufacturing route is to coat the sheet metal first before forming. The change in the manufacturing sequence can potentially improve cost and reduce environmental impact. This approach, however, requires the coating to survive the deformation process. Thus, the effect of plastic deformation on coating adhesion is of primary interest to many engineers and researchers. This research aims at developing a methodology to predict the adhesion of coating after metal forming processes. A pull-off apparatus that measures the coating pull-off stress was used to indicate the coating adhesion strength. Several types of specimen were designed to obtain uniaxial tension, biaxial tension, and tension-compression deformation modes on pre-coated sheet by using a uniaxial tensile tester. Experimental results from two selected polymer coated sheet metals show that coating adhesion was affected by plastic deformation. An analytical model based on a virtual interface crack concept was developed to indicate the adhesion potential of the coating-substrate interface. From interfacial fracture mechanics, the initial adhesion potential is defined as the energy release rate characterized by the virtual interface crack and the initial pull-off stress. The analytical model was used to predict coating adhesion loss after deformation in uniaxial tension mode. The analytical model predictions agreed well with experimental results. Finite element analysis tool was applied to simulate more complex deformation modes in stamping of coated sheet meals. The stress field near the interface crack tip was used to calculate the energy release rate and predict the adhesion loss under different deformation modes. The predictions obtained from numerical method are also in good agreements with the experimental results in biaxial tension and tension-compression modes. The research has led to a better understanding of the effects of plastic deformation on coating adhesion. The developed adhesion test methods can be used to generate useful information on coating durability for diverse practical use. It is also expected that the results of the research will facilitate the development of better polymer coated sheet metal to be used in sheet metal forming processes.

    Huang, Yu-Hsuan

    2010-05-01T23:59:59.000Z

    369

    K West basin isolation barrier leak rate test  

    SciTech Connect

    This document establishes the procedure for performing the acceptance test on the two isolation barriers being installed in K West basin. This acceptance test procedure shall be used to: First establish a basin water loss rate prior to installation of the two isolation barriers between the main basin and the discharge chute in K-Basin West. Second, perform an acceptance test to verify an acceptable leakage rate through the barrier seals.

    Whitehurst, R.; McCracken, K.; Papenfuss, J.N.

    1994-10-31T23:59:59.000Z

    370

    Quantum calculation of Coulomb reorientation and near-barrier fusion  

    E-Print Network (OSTI)

    We investigate the role of deformation on the fusion probability around the barrier using the Time-Dependent Hartree-Fock theory with a full Skyrme force. We obtain a distribution of fusion probabilities around the nominal barrier due to the different contributions of the various orientations of the deformed nucleus at the touching point. It is also shown that the long range Coulomb reorientation reduces the fusion probability around the barrier.

    Cédric Simenel; Michael Bender; Philippe Chomaz; Thomas Duguet; Gilles De France

    2006-05-08T23:59:59.000Z

    371

    PowerChoice Residential Customer Response to TOU Rates  

    E-Print Network (OSTI)

    Reflective window coating Radiant barrier in attic Plantedwindow coating (10) Radiant barrier in attic (11) Planted

    Peters, Jane S.

    2010-01-01T23:59:59.000Z

    372

    Research utilisation in nursing practice : Barriers and facilitators.  

    E-Print Network (OSTI)

    ??Research utilisation in nursing practice - barriers and facilitators To improve and develop nursing practice it is important that research findings are utilised by the… (more)

    Nilsson Kajermo, Kerstin

    2004-01-01T23:59:59.000Z

    373

    TEST DEVICE FOR MEASURING PERMEABILITY OF A BARRIER ...  

    A test device for measuring permeability of a barrier material. An exemplary device comprises a test card having a thin-film conductor-pattern formed ...

    374

    Drivers and Barriers in the Current Concentrated Solar Power...  

    Open Energy Info (EERE)

    Current Concentrated Solar Power (CSP) Market (Webinar) Focus Area: Solar Topics: Market Analysis Website: www.leonardo-energy.orgwebinar-drivers-and-barriers-current-csp-marke...

    375

    Mechanisms and genetic control of interspecific crossing barriers in Lycopersicon  

    DOE Green Energy (OSTI)

    This study employs Lycopersicon esculentum and L. pennellii as model systems to study the interspecific reproductive barriers unilateral incongruity (UI), hybrid breakdown and interspecific aberrant ratio syndrome (IARS).

    Mutschler, M.A. (Cornell Univ., Ithaca, NY (United States)); McCormick, S. (Agricultural Research Service, Albany, CA (United States). Plant Gene Expression Center)

    1993-03-27T23:59:59.000Z

    376

    Advanced Fuels Campaign Cladding & Coatings Meeting Summary  

    SciTech Connect

    The Fuel Cycle Research and Development (FCRD) Advanced Fuels Campaign (AFC) organized a Cladding and Coatings operational meeting February 12-13, 2013, at Oak Ridge National Laboratory (ORNL). Representatives from the U.S. Department of Energy (DOE), national laboratories, industry, and universities attended the two-day meeting. The purpose of the meeting was to discuss advanced cladding and cladding coating research and development (R&D); review experimental testing capabilities for assessing accident tolerant fuels; and review industry/university plans and experience in light water reactor (LWR) cladding and coating R&D.

    Not Listed

    2013-03-01T23:59:59.000Z

    377

    Self-assembled nanolaminate coatings (SV)  

    Science Conference Proceedings (OSTI)

    Sandia National Laboratories (Sandia) and Lockheed Martin Aeronautics (LM Aero) are collaborating to develop affordable, self-assembled, nanocomposite coatings and associated fabrication processes that will be tailored to Lockheed Martin product requirements. The purpose of this project is to develop a family of self-assembled coatings with properties tailored to specific performance requirements, such as antireflective (AR) optics, using Sandia-developed self-assembled techniques. The project met its objectives by development of a simple and economic self-assembly processes to fabricate multifunctional coatings. Specifically, materials, functionalization methods, and associated coating processes for single layer and multiple layers coatings have been developed to accomplish high reflective coatings, hydrophobic coatings, and anti-reflective coatings. Associated modeling and simulations have been developed to guide the coating designs for optimum optical performance. The accomplishments result in significant advantages of reduced costs, increased manufacturing freedom/producibility, improved logistics, and the incorporation of new technology solutions not possible with conventional technologies. These self-assembled coatings with tailored properties will significantly address LMC's needs and give LMC a significant competitive lead in new engineered materials. This work complements SNL's LDRD and BES programs aimed at developing multifunctional nanomaterials for microelectronics and optics as well as structure/property investigations of self-assembled nanomaterials. In addition, this project will provide SNL with new opportunities to develop and apply self-assembled nanocomposite optical coatings for use in the wavelength ranges of 3-5 and 8-12 micrometers, ranges of vital importance to military-based sensors and weapons. The SANC technologies will be applied to multiple programs within the LM Company including the F-35, F-22, ADP (Future Strike Bomber, UAV, UCAV, etc.). The SANC technologies will establish LMA and related US manufacturing capability for commercial and military applications therefore reducing reliance on off-shore development and production of related critical technologies. If these technologies are successfully licensed, production of these coatings in manufactory will create significant technical employment opportunities.

    Fan, H.

    2012-03-01T23:59:59.000Z

    378

    METHOD OF PREPARING COATED REFRACTORY WARE  

    DOE Patents (OSTI)

    A method is presented for preparing a dense, refractory coating on a vessel adapted to the handling of molten metals such as uranium and plutonium. According to the invention, the inner surface of a heat stable container formed of a refractory metal of either niobium, molybdenum, tantalum, or tungsten is coated with molten thorium within 10 minutes so as to present alloying with the refractory metal and then exposed to a reactive atmosphere of nitrogen at a temperature of about 1750 deg for 30 minutes to form a refractory thorium nitride coating.

    Perlman, M.L.; Lipkin, D.; Weissman, S.I.

    1959-07-21T23:59:59.000Z

    379

    Plant Engineering: Aging Degradation of Coating Service Level I Coatings—Summary of EPRI Coating Aging Project Activities  

    Science Conference Proceedings (OSTI)

    The nuclear industry experienced some instances of degradation of safety-related coating systems applied inside the reactor containment. These instances of degradation became a concern to the industry, but the industry did not have a thoroughly documented history of the degradation or its causes. In response, the Electric Power Research Institute (EPRI) formed a project that conducted research to gain an understanding of the coating degradation and evaluate the effects of aging on the qualified ...

    2013-06-28T23:59:59.000Z

    380

    Measure Guideline: Transitioning from Three-Coat Stucco to One-Coat Stucco with EPS  

    SciTech Connect

    This Measure Guideline has been developed to help builders transition from using a traditional three-coat stucco wall-cladding system to a one-coat stucco wall-cladding system with expanded polystyrene (EPS) insulated sheathing. The three-coat system uses a base layer, a fill layer, and a finish layer. The one-coat system maintains the look of a traditional stucco system but uses only a base layer and a finish coat over EPS insulation that achieves higher levels of energy efficiency. Potential risks associated with the installation of a one-coat stucco system are addressed in terms of design, installation, and warranty concerns such as cracking and delamination, along with mitigation strategies to reduce these risks.

    Brozyna, K.; Davis, G.; Rapport, A.

    2012-04-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    381

    Electrical insulator assembly with oxygen permeation barrier  

    DOE Patents (OSTI)

    A high-voltage electrical insulator for electrically insulating a thermoelectric module in a spacecraft from a niobium-1% zirconium alloy wall of a heat exchanger filled with liquid lithium while providing good thermal conductivity between the heat exchanger and the thermoelectric module. The insulator has a single crystal alumina layer (SxAl[sub 2]O[sub 3], sapphire) with a niobium foil layer bonded thereto on the surface of the alumina crystal facing the heat exchanger wall, and a molybdenum layer bonded to the niobium layer to act as an oxygen permeation barrier to preclude the oxygen depleting effects of the lithium from causing undesirable niobium-aluminum intermetallic layers near the alumina-niobium interface. 3 figures.

    Van Der Beck, R.R.; Bond, J.A.

    1994-03-29T23:59:59.000Z

    382

    Electrical insulator assembly with oxygen permeation barrier  

    DOE Patents (OSTI)

    A high-voltage electrical insulator (21) for electrically insulating a thermoelectric module (17) in a spacecraft from a niobium-1% zirconium alloy wall (11) of a heat exchanger (13) filled with liquid lithium (16) while providing good thermal conductivity between the heat exchanger and the thermoelectric module. The insulator (21) has a single crystal alumina layer (SxAl.sub.2 O.sub.3, sapphire) with a niobium foil layer (32) bonded thereto on the surface of the alumina crystal (26) facing the heat exchanger wall (11), and a molybdenum layer (31) bonded to the niobium layer (32) to act as an oxygen permeation barrier to preclude the oxygen depleting effects of the lithium from causing undesirable niobium-aluminum intermetallic layers near the alumina-niobium interface.

    Van Der Beck, Roland R. (Lansdale, PA); Bond, James A. (Exton, PA)

    1994-01-01T23:59:59.000Z

    383

    Removing Barriers to Utility Interconnected Photovoltaic Inverters  

    SciTech Connect

    The Million Solar Roofs Initiative has motivated a renewed interest in the development of utility interconnected photovoltaic (UIPV) inverters. Government-sponsored programs (PVMaT, PVBONUS) and competition among utility interconnected inverter manufacturers have stimulated innovations and improved the performance of existing technologies. With this resurgence, Sandia National Laboratories (SNL) has developed a program to assist industry initiatives to overcome barriers to UIPV inverters. In accordance with newly adopted IEEE 929-2000, the utility interconnected PV inverters are required to cease energizing the utility grid when either a significant disturbance occurs or the utility experiences an interruption in service. Compliance with IEEE 929-2000 is being widely adopted by utilities as a minimum requirement for utility interconnection. This report summarizes work done at the SNL balance-of-systems laboratory to support the development of IEEE 929-2000 and to assist manufacturers in meeting its requirements.

    Gonzalez, S.; Bonn, R.H.; Ginn, J.W.

    2000-10-03T23:59:59.000Z

    384

    Manufacturing Barriers to High Temperature PEM Commercialization  

    NLE Websites -- All DOE Office Websites (Extended Search)

    9/2011 9/2011 1 BASF Fuel Cell, Inc. Manufacturing Barriers to high temperature PEM commercialization 39 Veronica Ave Somerset , NJ 08873 Tel : (732) 545-5100 9/9/2011 2 Background on BASF Fuel Cell  BASF Fuel Cell was established in 2007, formerly PEMEAS Fuel Cells (including E-TEK)  Product line is high temperature MEAs (Celtec ® P made from PBI-phosphoric acid)  Dedicated a new advanced pilot manufacturing facility in Somerset NJ May 2009. Ribbon-cutting hosted by Dr. Kreimeyer (BASF BoD, right) and attended by various US pubic officials including former NJ Governor Jon Corzine (left) 9/9/2011 3 Multi-layer product of membrane (polybenzimidazole and phosphoric acid), gas diffusion material and catalysts Unique characteristics:  High operating temperature

    385

    OVERLAY COATINGS FOR GAS TURBINE AIRFOILS  

    E-Print Network (OSTI)

    of Supperalloys for Gas Turbine Engines, 11 J. Metals, Q,OVERLAY COATINGS FOR GAS TURBINE AIRFOILS Donald H. Boone1970, p. 545. R. Krutenat, Gas Turbine Materials Conference

    Boone, Donald H.

    2013-01-01T23:59:59.000Z

    386

    Thin film-coated polymer webs  

    DOE Patents (OSTI)

    The present invention relates to thin film-coated polymer webs, and more particularly to thin film electronic devices supported upon a polymer web, wherein the polymer web is treated with a purifying amount of electron beam radiation.

    Wenz, Robert P. (Cottage Grove, MN); Weber, Michael F. (Shoreview, MN); Arudi, Ravindra L. (Woodbury, MN)

    1992-02-04T23:59:59.000Z

    387

    (Ni-P) Coatings on AISI  

    Science Conference Proceedings (OSTI)

    ... investigation shows that Electroless Nickel coated AISI 1040 steel has high potential to replace hard chrome plated AISI ... Conditioning of Composite Lubricant Powder for Cold Spray ... New Developments in High Velocity Air-Fuel Spraying.

    388

    Neutron absorbing coating for nuclear criticality control  

    DOE Patents (OSTI)

    A neutron absorbing coating for use on a substrate, and which provides nuclear criticality control is described and which includes a nickel, chromium, molybdenum, and gadolinium alloy having less than about 5% boron, by weight.

    Mizia, Ronald E. (Idaho Falls, ID); Wright, Richard N. (Idaho Falls, ID); Swank, William D. (Idaho Falls, ID); Lister, Tedd E. (Idaho Falls, ID); Pinhero, Patrick J. (Idaho Falls, ID)

    2007-10-23T23:59:59.000Z

    389

    Silica-coated liposomes for insulin delivery  

    Science Conference Proceedings (OSTI)

    Liposomes coated with silica were explored as protein delivery vehicles for their enhanced stability and improved encapsulation efficiency. Insulin was encapsulated within the fluidic phosphatidylcholine lipid vesicles by thin film hydration at pH 2.5, ...

    Neelam Dwivedi; M. A. Arunagirinathan; Somesh Sharma; Jayesh Bellare

    2010-01-01T23:59:59.000Z

    390

    Strain-tolerant ceramic coated seal  

    DOE Patents (OSTI)

    A metallic regenerator seal is provided having multi-layer coating comprising a NiCrAlY bond layer, a yttria stabilized zirconia (YSZ) intermediate layer, and a ceramic high temperature solid lubricant surface layer comprising zinc oxide, calcium fluoride, and tin oxide. An array of discontinuous grooves is laser machined into the outer surface of the solid lubricant surface layer making the coating strain tolerant.

    Schienle, James L. (Phoenix, AZ); Strangman, Thomas E. (Phoenix, AZ)

    1994-01-01T23:59:59.000Z

    391

    Strain-tolerant ceramic coated seal  

    Science Conference Proceedings (OSTI)

    A metallic regenerator seal is provided having multi-layer coating comprising a NiCrAlY bond layer, a yttria stabilized zirconia (YSZ) intermediate layer, and a ceramic high temperature solid lubricant surface layer comprising zinc oxide, calcium fluoride, and tin oxide. An array of discontinuous grooves is laser machined into the outer surface of the solid lubricant surface layer making the coating strain tolerant. 4 figs.

    Schienle, J.L.; Strangman, T.E.

    1994-10-04T23:59:59.000Z

    392

    Thermal Spray Coatings for Coastal Infrastructure  

    Science Conference Proceedings (OSTI)

    Several protection strategies for coastal infrastructure using thermal-spray technology are presented from research at the Albany Research Center. Thermal-sprayed zinc coatings for anodes in impressed current cathodic protection systems are used to extend the service lives of reinforced concrete bridges along the Oregon coast. Thermal-sprayed Ti is examined as an alternative to the consumable zinc anode. Sealed thermal-sprayed Al is examined as an alternative coating to zinc dust filled polyurethane paint for steel structures.

    Holcomb, G.R.; Covino, BernardS. Jr.; Cramer, S.D.; Bullard, S.J.

    1997-11-01T23:59:59.000Z

    393

    Thermal sensor with an improved coating  

    DOE Patents (OSTI)

    The disclosure is directed to an apparatus for detecting radiation having wavelengths from about 0.4 .mu.m to about 5.6 .mu.m. An optical coating is applied to a thermal sensor that is normally transparent to radiation with such wavelengths. The optical coating is thin and light and includes a modifier and an absorber. The thermal sensor can be a pyroelectric detector such as strontium barium niobate.

    LaDelfe, Peter C. (Los Alamos, NM); Stotlar, Suzanne C. (Los Alamos, NM)

    1986-01-01T23:59:59.000Z

    394

    Metal alloy coatings and methods for applying  

    SciTech Connect

    A method of coating a substrate comprises plasma spraying a prealloyed feed powder onto a substrate, where the prealloyed feed powder comprises a significant amount of an alloy of stainless steel and at least one refractory element selected from the group consisting of titanium, zirconium, hafnium, niobium, tantalum, molybdenum, and tungsten. The plasma spraying of such a feed powder is conducted in an oxygen containing atmosphere and forms an adherent, corrosion resistant, and substantially homogenous metallic refractory alloy coating on the substrate.

    Merz, Martin D. (Richland, WA); Knoll, Robert W. (Kennewick, WA)

    1991-01-01T23:59:59.000Z

    395

    Exploring the multi-humped fission barrier of 238U via sub-barrier photofission  

    E-Print Network (OSTI)

    The photofission cross-section of 238U was measured at sub-barrier energies as a function of the gamma-ray energy using, for the first time, a monochromatic, high-brilliance, Compton-backscattered gamma-ray beam. The experiment was performed at the High Intensity gamma-ray Source (HIgS) facility at beam energies between E=4.7 MeV and 6.0 MeV and with ~3% energy resolution. Indications of transmission resonances have been observed at gamma-ray beam energies of E=5.1 MeV and 5.6 MeV with moderate amplitudes. The triple-humped fission barrier parameters of 238U have been determined by fitting EMPIRE-3.1 nuclear reaction code calculations to the experimental photofission cross section.

    L. Csige; D. M. Filipescu; T. Glodariu; J. Gulyás; M. M. Günther; D. Habs; H. J. Karwowski; A. Krasznahorkay; G. C. Rich; M. Sin; L. Stroe; O. Tesileanu; P. G. Thirolf

    2013-02-14T23:59:59.000Z

    396

    HIGH-PERFORMANCE COATING MATERIALS  

    DOE Green Energy (OSTI)

    Corrosion, erosion, oxidation, and fouling by scale deposits impose critical issues in selecting the metal components used at geothermal power plants operating at brine temperatures up to 300 C. Replacing these components is very costly and time consuming. Currently, components made of titanium alloy and stainless steel commonly are employed for dealing with these problems. However, another major consideration in using these metals is not only that they are considerably more expensive than carbon steel, but also the susceptibility of corrosion-preventing passive oxide layers that develop on their outermost surface sites to reactions with brine-induced scales, such as silicate, silica, and calcite. Such reactions lead to the formation of strong interfacial bonds between the scales and oxide layers, causing the accumulation of multiple layers of scales, and the impairment of the plant component's function and efficacy; furthermore, a substantial amount of time is entailed in removing them. This cleaning operation essential for reusing the components is one of the factors causing the increase in the plant's maintenance costs. If inexpensive carbon steel components could be coated and lined with cost-effective high-hydrothermal temperature stable, anti-corrosion, -oxidation, and -fouling materials, this would improve the power plant's economic factors by engendering a considerable reduction in capital investment, and a decrease in the costs of operations and maintenance through optimized maintenance schedules.

    SUGAMA,T.

    2007-01-01T23:59:59.000Z

    397

    Reaction Barrier Transparency for Cold Fusion with Deuterium and Hydrogen  

    E-Print Network (OSTI)

    An improved parametric representation of Coulomb barrier penetration is presented. These detailed calculations are improvements upon the conventionally used Gamow tunneling coefficient. This analysis yields a reaction barrier transparency (RBT) which may have singular ramifications for cold fusion, as well as significant consequences in a wide variety of fusion settings. 1.

    Yeong E. Kim; Jin-hee Yoon; Alexander L. Zubarev; Mario Rabinowitz

    1994-01-01T23:59:59.000Z

    398

    Stability and Schottky barrier of silicides: First-principles study  

    Science Conference Proceedings (OSTI)

    Using first-principles calculations, we explain why some metal atoms such as Ni produce bulk silicides and the others like Au never produce silicides, why silicides with some stoichiometry are difficult to grow on Si substrate, and why Schottky barrier ... Keywords: First-principles calculation, Schottky barrier, Silicide, Silicide/Si interfaces, Stability

    T. Nakayama; S. Sotome; S. Shinji

    2009-07-01T23:59:59.000Z

    399

    Feasibility study of tank leakage mitigation using subsurface barriers  

    Science Conference Proceedings (OSTI)

    The US Department of Energy (DOE) has established the Tank Waste Remediation System (TWRS) to satisfy manage and dispose of the waste currently stored in the underground storage tanks. The retrieval element of TWRS includes a work scope to develop subsurface impermeable barriers beneath SSTs. The barriers could serve as a means to contain leakage that may result from waste retrieval operations and could also support site closure activities by facilitating cleanup. Three types of subsurface barrier systems have emerged for further consideration: (1) chemical grout, (2) freeze walls, and (3) desiccant, represented in this feasibility study as a circulating air barrier. This report contains analyses of the costs and relative risks associated with combinations retrieval technologies and barrier technologies that from 14 alternatives. Eight of the alternatives include the use of subsurface barriers; the remaining six nonbarrier alternative are included in order to compare the costs, relative risks and other values of retrieval with subsurface barriers. Each alternative includes various combinations of technologies that can impact the risks associated with future contamination of the groundwater beneath the Hanford Site to varying degrees. Other potential risks associated with these alternatives, such as those related to accidents and airborne contamination resulting from retrieval and barrier emplacement operations, are not quantitatively evaluated in this report.

    Treat, R.L.; Peters, B.B.; Cameron, R.J.; McCormak, W.D.; Trenkler, T.; Walters, M.F. [Ensearch Environmental, Inc. (United States); Rouse, J.K.; McLaughlin, T.J. [Bovay Northwest, Inc., Richland, WA (United States); Cruse, J.M. [Westinghouse Hanford Co., Richland, WA (United States)

    1994-09-21T23:59:59.000Z

    400

    Progress to Develop an Advanced Solar-Selective Coating  

    DOE Green Energy (OSTI)

    The progress to develop a durable advanced solar-selective coating will be described. Experimental work has focused on modeling high-temperature, solar-selective coatings; depositing the individual layers and modeled coatings; measuring the optical, thermal, morphology, and compositional properties and using the data to validate the modeled and deposited properties; re-optimizing the coating; and testing the coating performance and durability.

    Kennedy, C. E.

    2008-03-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    401

    Overcoming Barriers to the Transfer and Diffusion of Climate Technologies |  

    Open Energy Info (EERE)

    Overcoming Barriers to the Transfer and Diffusion of Climate Technologies Overcoming Barriers to the Transfer and Diffusion of Climate Technologies Jump to: navigation, search Tool Summary Name: Overcoming Barriers to the Transfer and Diffusion of Climate Technologies Agency/Company /Organization: UNEP-Risoe Centre Sector: Energy, Climate Focus Area: Greenhouse Gas Topics: Technology characterizations Resource Type: Publications, Guide/manual, Training materials Website: uneprisoe.org/ Cost: Free Overcoming Barriers to the Transfer and Diffusion of Climate Technologies Screenshot References: UNEP-Risoe[1] Logo: Overcoming Barriers to the Transfer and Diffusion of Climate Technologies This guidebook deals with the transfer of proven technologies both between countries and within them. "The purpose of the TNA project is to assist participant developing country

    402

    Barriers to energy conservation. Conservation paper Number 55  

    SciTech Connect

    This study's aim is to provide policy guidance to the FEA in its efforts to break down barriers to the efficient usage of finite energy sources. Such efforts may involve mechanisms to promote the more-efficient usage of current energy sources or to break down the barriers which presently inhibit the introduction of alternative energy sources. Only the energy used by finished products is considered and not energy used in the production process itself. The majority of barriers that can be easily and/or directly affected involve the marketplace. This is true even where the barriers are technolgical; for, in many cases, the problem is not the absence of adequate technology, but its cost. For this reason, considerable time was spent developing an understanding of the various ways in which economic barriers affect efficient energy usage.

    1976-07-01T23:59:59.000Z

    403

    Removing Barriers to Innovations: Related Codes and Standards CSI Team  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Removing Barriers to Innovation Removing Barriers to Innovation Related Codes and Standards CSI Team PAM COLE Pacific Northwest National Laboratory Building America Technical Update Meeting, April 29-30, 2013, Denver, CO PNNL-SA-95120 Background/History Transformation of U.S. housing markets to favor high- performance homes faces significant challenges, from education to technology to infrastructure and cost barriers. Some of the most difficult challenges involve industry codes and standards that may prevent or slow the innovation process. Building America Research has a history of: Successful market innovations and transformation and overcoming codes and standards barriers. Top 3 Existing Innovations C/S Challenges Thermal Bypass Air Barrier Requirements: Building America research teams effectively

    404

    CONTAINMENT EVALUATION OF PU-METAL TRANSPORT USING MULTIPLE BARRIERS  

    Science Conference Proceedings (OSTI)

    A methodology was developed previously by SRNL to show that Al-SNF with cladding breaches can be directly transported in standard casks and maintained within the allowable release rates. This novel approach may be extended to other nuclear material systems. Utilizing an adaptation to the methodology, a containment analysis has been performed for the scenario of non-routine transfer of a damaged 9975 package containing plutonium metal from K-area monitored storage to F-area on the Savannah River Site. A multiple barrier system with each barrier having a defined leakage rate of less than 1 x 10{sup -3} cm{sup 3}/sec of air at Standard Temperature and Pressure was analyzed to determine the number of barriers needed to transport the package under normal transportation conditions to meet transportation requirements for containment. The barrier system was analyzed parametrically to achieve a composite system that met the federal requirements for the maximum permissible release rate. The multiple barrier system acts to retard the release of radioactivity. That is, a build-up in the radioactivity release rate occurs with time. For example, a system with three barriers (e.g., sealed plastic barrier) with a total free volume of 4,500 cm{sup 3} could be transported for a total time of up to approximately 10 days with a release rate within the permissible rate. Additional number of barriers, or volume of the barriers, or both, would extend to this period of time. For example, a system with seven barriers with a total free volume of 4,500 cm{sup 3} could be transported for up to 100 days. Plastic bags are one type of barrier used in movement of radioactive materials and capable of achieving a leak rate of 1 x 10{sup -3} cm{sup 3}/sec of air at STP. Low-density polyethylene bags can withstand high temperature (up to 180 C); a barrier thickness of 10 mils should be suitable for the barrier system.

    Vinson, D.

    2011-07-18T23:59:59.000Z

    405

    Exploiting atomic operations for barrier on cray XE/XK systems  

    Science Conference Proceedings (OSTI)

    Barrier is a collective operation used by many scientific applications and parallel libraries for synchronization. Typically, a Barrier operation is implemented by exchanging a short data message that requires demultiplexing, thereby adding ... Keywords: MPI, atomic operations, barrier, collectives, cray, gemini

    Manjunath Gorentla Venkata; Richard L. Graham; Joshua S. Ladd; Pavel Shamis; Nathan T. Hjelm; Samuel K. Gutierrez

    2012-09-01T23:59:59.000Z

    406

    Dye-sensitized Schottky barrier solar cells  

    DOE Patents (OSTI)

    A low-cost dye-sensitized Schottky barrier solar cell comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent.

    Skotheim, Terje A. (Berkeley, CA)

    1978-01-01T23:59:59.000Z

    407

    Natural gas vehicles : Status, barriers, and opportunities.  

    Science Conference Proceedings (OSTI)

    In the United States, recent shale gas discoveries have generated renewed interest in using natural gas as a vehicular fuel, primarily in fleet applications, while outside the United States, natural gas vehicle use has expanded significantly in the past decade. In this report for the U.S. Department of Energy's Clean Cities Program - a public-private partnership that advances the energy, economic, and environmental security of the U.S. by supporting local decisions that reduce petroleum use in the transportation sector - we have examined the state of natural gas vehicle technology, current market status, energy and environmental benefits, implications regarding advancements in European natural gas vehicle technologies, research and development efforts, and current market barriers and opportunities for greater market penetration. The authors contend that commercial intracity trucks are a prime area for advancement of this fuel. Therefore, we examined an aggressive future market penetration of natural gas heavy-duty vehicles that could be seen as a long-term goal. Under this scenario using Energy Information Administration projections and GREET life-cycle modeling of U.S. on-road heavy-duty use, natural gas vehicles would reduce petroleum consumption by approximately 1.2 million barrels of oil per day, while another 400,000 barrels of oil per day reduction could be achieved with significant use of natural gas off-road vehicles. This scenario would reduce daily oil consumption in the United States by about 8%.

    Rood Werpy, M.; Santini, D.; Burnham, A.; Mintz, M.; Energy Systems

    2010-11-29T23:59:59.000Z

    408

    Microsoft Word - IG-0741 Y-12 Barrier Final 101006.doc  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Inspection Report Concerns With Security Barriers at the Y-12 National Security Complex DOE/IG-0741 October 2006 U.S. Department of Energy Office of Inspector General Office of Inspections and Special Inquiries CONCERNS WITH SECURITY BARRIERS AT THE Y-12 NATIONAL SECURITY COMPLEX TABLE OF CONTENTS OVERVIEW Introduction and Objective 1 Observations and Conclusions 1 DETAILS OF FINDINGS Weapon Ports 2 Observations 2 RECOMMENDATIONS 5 MANAGEMENT COMMENTS 5 INSPECTOR COMMENTS 5 APPENDICES A. Scope and Methodology 8 B. Management Comments 9 Overview Page 1 Concerns with Security Barriers at the Y-12 National Security Complex INTRODUCTION The DOE Office of Inspector General received an allegation that

    409

    Placement of Traffic Barriers on Roadside and Median Slopes  

    E-Print Network (OSTI)

    Cross median crashes have become a serious problem in recent years. Most of the median cross sections used for divided highways have terrains with steep slopes. Traffic barriers, frequently used on slopes, are generally designed based on the findings obtained from crash tests performed on flat terrain. For barriers placed on roadside and median slopes, vehicle impact height varies depending on the trajectory of the vehicle along the ditch section and lateral offset of the barrier. Thus depending on the placement location on a relatively steep slope, a barrier can be impacted by an errant vehicle at height and orientation more critical compared to those considered during its design. Hence, detailed study of performance of barriers on roadside and median slopes is needed to achieve acceptable safety performance. In this study, performances of modified G4(1S) W-beam, Midwest Guardrail System (MGS), modified Thrie-beam, modified weak post W-beam, and box-beam guardrail systems on sloped terrains are investigated using numerical simulations. A procedure is developed that provide guidance for their placement on roadside and median slopes. The research approach consists of nonlinear finite element analyses and multi-rigid-body dynamic analyses approach. Detailed finite element representation for each of the barriers is developed using LS-DYNA. Model fidelity is assessed through comparison of simulated and measured responses reported in full scale crash test studies conducted on flat terrain. LS-DYNA simulations of vehicle impacts on barriers placed on flat terrain at different impact heights are performed to identify performance limits of the barriers in terms of acceptable vehicle impact heights. The performances of the barriers are evaluated following the guidelines provided in NCHRP Report 350. Multi-rigid-body dynamic analysis code, CARSIM, is used to identify trajectories of the vehicles traversing various roadside and median cross-slopes. After analyzing vehicle trajectories and barrier performance limits, a guideline has been prepared with recommendations for the placement of barriers along roadside and median slopes. This guideline is then verified and refined using the responses obtained from full-scale LS-DYNA simulations. These simulations capture the full encroachment event from departure of the vehicle off the traveled way through impact with the barrier.

    Ferdous, Md Rubiat

    2011-05-01T23:59:59.000Z

    410

    Transmission of electron through monolayer graphene laser barrier  

    Science Conference Proceedings (OSTI)

    The present theoretical model deals with the transmission property of the Dirac fermions in the Floquet sidebands for the laser radiated graphene nanostructure. The laser assisted structure behaves as a tunneling barrier that leads to asymmetric transmission around the normal to the interface and is capable to confine the massless Dirac particles in a monolayer graphene strip. The absence of the Klein tunneling and the presence of a large number of controlling parameters would make the time dependent vector potential barrier superior over the electrostatic and magnetic barriers towards the opto-electronic device fabrication.

    Sinha, C. [Department of Theoretical Physics, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India); Biswas, R. [Department of Physics, P. K. College, Contai, Purba Medinipur, West Bengal 721401 (India)

    2012-04-30T23:59:59.000Z

    411

    Effects of weakly coupled channels on quasielastic barrier distributions  

    Science Conference Proceedings (OSTI)

    Heavy-ion collisions often produce fusion barrier distributions with structures displaying a fingerprint of couplings to highly collective excitations. Similar distributions can be obtained from large-angle quasielastic scattering, although in this case, the role of the many weak direct-reaction channels is unclear. For {sup 20}Ne+{sup 90}Zr, we have observed the barrier structures expected for the highly deformed neon projectile; however, for {sup 20}Ne+{sup 92}Zr, we find significant extra absorption into a large number of noncollective inelastic channels. This leads to smearing of the barrier distribution and a consequent reduction in the ''resolving power'' of the quasielastic method.

    Piasecki, E.; Kisielinski, M. [Heavy Ion Laboratory, Warsaw University, Warsaw (Poland); The Andrzej Soltan Institute for Nuclear Studies, Swierk (Poland); Swiderski, L.; Keeley, N.; Rusek, K.; Strojek, I. [The Andrzej Soltan Institute for Nuclear Studies, Swierk (Poland); Gawlikowicz, W.; JastrzePbski, J.; Kordyasz, A.; Trzcinska, A. [Heavy Ion Laboratory, Warsaw University, Warsaw (Poland); Kliczewski, S. [The Henryk Niewodniczanski Institute of Nuclear Physics, Krakow (Poland); Kowalczyk, M. [Heavy Ion Laboratory, Warsaw University, Warsaw (Poland); Institute of Experimental Physics, Warsaw University, Warsaw (Poland); Khlebnikov, S. [Khloplin Radium Institute, St. Petersburg (Russian Federation); Koshchiy, E. [Kharkiv University, Kharkiv (Ukraine); Kozulin, E.; Loktev, T.; Smirnov, S. [JINR, Dubna (Russian Federation); Krogulski, T. [Faculty of Physics, University of Bialystok, Bialystok (Poland); Mutterer, M. [Institut fuer Kernphysik, Technische Universitaet Darmstadt, Darmstadt (Germany); Piasecki, K. [Institute of Experimental Physics, Warsaw University, Warsaw (Poland)] (and others)

    2009-11-15T23:59:59.000Z

    412

    The Influence of Dust on the Absorptivity of Radiant Barriers  

    E-Print Network (OSTI)

    The purpose of this project was to model and quantify the increase of the absorptivity of radiant barriers caused by the accumulation of dust on the surface of radiant barriers. This research was the continuation of a previous work by the author at Texas A&M University in which a radiation energy balance inside the attic enclosure was developed. The particles were considered as flat, circular planes, all having the same radii. That early model showed that there was a linear relationship between the fraction of area of the foil covered by dust and the mean absorptivity of the dusty radiant barrier. In the present work, it was found that the assumption of treating the dust particles as plane circles, underestimated the effective area of the particles by about 20%. Experimental measurements indicated that dust particles achieved the same temperature as the radiant barrier. The new model used the linear relationship just described, and simulated the dust particles as flat circular planes having random radii and laying in random locations within the radiant barrier surface. The new model calculated the fraction of radiant barrier area covered by particles using a digital array in which the clean barrier was represented as zeroes and the dust particles were represented as a set of ones appropriately dimensioned inside the array. The experimentation used natural dust and Arizona Road Test Dust. Using an infrared emissometer, the emissivities (absorptivities) of the clean and dusty barriers were measured and using an electronic scale, the dust loading was measured. An electron microscope was used to experimentally find the fraction of radiant barrier covered by the dust particles to correlate the experimentally found absorptivity with the experimentally found fraction of dust coverage. The limited experimental data available were also used to correlate the absorptivity of the dusty radiant barrier with the time of dust accumulation and the location of the barrier inside the attic. A linear relationship between the absorptivity and the time of dust accumulation was found that can be applied to predict future barrier effectiveness based upon the rate of dust accumulation for a given location.

    Noboa, Homero L.

    1993-08-01T23:59:59.000Z

    413

    Sub-barrier Fusion Cross Sections with Energy Density Formalism  

    E-Print Network (OSTI)

    We discuss the applicability of the energy density formalism (EDF) for heavy-ion fusion reactions at sub-barrier energies. For this purpose, we calculate the fusion excitation function and the fusion barrier distribution for the reactions of $^{16}$O with $^{154,}$$^{144}$Sm,$^{186}$W and $^{208}$Pb with the coupled-channels method. We also discuss the effect of saturation property on the fusion cross section for the reaction between two $^{64}$Ni nuclei, in connection to the so called steep fall-off phenomenon of fusion cross sections at deep sub-barrier energies.

    F. Muhammad Zamrun; K. Hagino; N. Takigawa

    2006-06-07T23:59:59.000Z

    414

    Bio-based Thermochromic Intelligent Roof Coating Research Project |  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    based Thermochromic Intelligent Roof based Thermochromic Intelligent Roof Coating Research Project Bio-based Thermochromic Intelligent Roof Coating Research Project The Department of Energy is conducting research into bio-based thermochromic intelligent roof coatings. The coatings are developed from waste cooking oil. Project Description This project seeks to develop and demonstrate a waste cooking oil-based thermochromic smart roof coating technology that will adjust light transmission in response to temperature changes. This will reduce energy demands for temperature regulation. The project will also study the effects of different oil sources on coating properties. Project Partners This project is being undertaken between the Department of Energy and United Environment & Energy. Project Goals

    415

    Degradation of yttria-stabilized zirconia thermal barrier coatings by vanadium pentoxide, phosphorous pentoxide, and sodium sulfate  

    Science Conference Proceedings (OSTI)

    The presence of vanadium, phosphorus, and sodium impurities in petcoke and coal/petcoke blends used in integrated gasification combined cycle (IGCC) plants warrants a clear understanding of high-temperature material degradation for the development of fuel-flexible gas turbines. In this study, degradation reactions of free-standing air plasma-sprayed (APS) yttria-stabilized zirconia (YSZ) in contact with V{sub 2}O{sub 5}, P{sub 2}O{sub 5}, and Na{sub 2}SO{sub 4} were investigated at temperatures up to 1200{sup o}C. Phase transformations and microstructural development were examined using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. Molten V{sub 2}O{sub 5} reacted with solid YSZ to form ZrV{sub 2}O{sub 7} at temperatures below 747{sup o}C. However, at temperatures above 747{sup o}C, molten V{sub 2}O{sub 5} reacted with YSZ to form yttrium vanadate (YVO{sub 4}). The formation of YVO{sub 4} led to the depletion of the Y2O{sub 3} stabilizer and deleterious transformation to the monoclinic ZrO{sub 2} phase. In addition, studies on YSZ degradation by Na{sub 2}SO{sub 4} and a Na{sub 2}SO{sub 4}+V{sub 2}O{sub 5} mixture (50-50 mol%) showed that Na{sub 2}SO{sub 4} itself had no effect on the degradation of YSZ. However, in the presence of V{sub 2}O{sub 5} at high temperatures, Na{sub 2}SO{sub 4} forms vanadate compounds having a lower melting point such as sodium metavanadate (610{sup o}C), which was found to degrade YSZ by the formation of YVO{sub 4} at a relatively lower temperature of 700{sup o}C. P{sub 2}O{sub 5} was found to react with APS YSZ by the formation of ZrP{sub 2}O{sub 7} at all the temperatures studied. At temperatures as low as 200{sup o}C and as high as 1200{sup o}C, molten P{sub 2}O{sub 5} was observed to react with solid YSZ to yield ZrP{sub 2}O{sub 7}, which led to the depletion of ZrO{sub 2} in YSZ that promoted the formation of the fluorite-cubic ZrO{sub 2} phase.

    Mohan, P.; Yuan, B.; Patterson, T.; Desai, V.H.; Sohn, Y.H. [University of Central Florida, Orlando, FL (United States)

    2007-11-15T23:59:59.000Z

    416

    Multilayer ultra-high-temperature ceramic coatings  

    SciTech Connect

    A coated carbon-carbon composite material with multiple ceramic layers to provide oxidation protection from ultra-high-temperatures, where if the carbon-carbon composite material is uninhibited with B.sub.4C particles, then the first layer on the composite material is selected from ZrB.sub.2 and HfB.sub.2, onto which is coated a layer of SiC coated and if the carbon-carbon composite material is inhibited with B.sub.4C particles, then protection can be achieved with a layer of SiC and a layer of either ZrB.sub.2 and HfB.sub.2 in any order.

    Loehman, Ronald E. (Albuquerque, NM); Corral, Erica L. (Tucson, AZ)

    2012-03-20T23:59:59.000Z

    417

    Figure correction of multilayer coated optics  

    DOE Patents (OSTI)

    A process is provided for producing near-perfect optical surfaces, for EUV and soft-x-ray optics. The method involves polishing or otherwise figuring the multilayer coating that has been deposited on an optical substrate, in order to correct for errors in the figure of the substrate and coating. A method such as ion-beam milling is used to remove material from the multilayer coating by an amount that varies in a specified way across the substrate. The phase of the EUV light that is reflected from the multilayer will be affected by the amount of multilayer material removed, but this effect will be reduced by a factor of 1-n as compared with height variations of the substrate, where n is the average refractive index of the multilayer.

    Chapman; Henry N. (Livermore, CA), Taylor; John S. (Livermore, CA)

    2010-02-16T23:59:59.000Z

    418

    Colloidal spray method for low cost thin coating deposition  

    DOE Patents (OSTI)

    A dense or porous coating of material is deposited onto a substrate by forcing a colloidal suspension through an ultrasonic nebulizer and spraying a fine mist of particles in a carrier medium onto a sufficiently heated substrate. The spraying rate is essentially matched to the evaporation rate of the carrier liquid from the substrate to produce a coating that is uniformly distributed over the surface of the substrate. Following deposition to a sufficient coating thickness, a single sintering step may be used to produce a dense ceramic coating. Using this method, coatings ranging in thickness from about one to several hundred microns can be obtained. By using a plurality of compounds in the colloidal suspension, coatings of mixed composition can be obtained. By using a plurality of solutions and separate pumps and a single or multiple ultrasonic nebulizer(s), and varying the individual pumping rates and/or the concentrations of the solutions, a coating of mixed and discontinuously graded (e.g., stepped) or continuously graded layers may be obtained. This method is particularly useful for depositing ceramic coatings. Dense ceramic coating materials on porous substrates are useful in providing improved electrode performance in devices such as high power density solid oxide fuel cells. Dense ceramic coatings obtained by the invention are also useful for gas turbine blade coatings, sensors, steam electrolyzers, etc. The invention has general use in preparation of systems requiring durable and chemically resistant coatings, or coatings having other specific chemical or physical properties.

    Pham, Ai-Quoc (San Jose, CA); Glass, Robert S. (Livermore, CA); Lee, Tae H. (Naperville, IL)

    2002-01-01T23:59:59.000Z

    419

    BARRIER SYSTEM FULL SCALE FIRE TESTING ADDRESSEES  

    E-Print Network (OSTI)

    All holders of operating licenses for nuclear power reactors, except those who have permanently ceased operations and have certified that fuel has been permanently removed from the reactor vessel, and fuel facilities licensees. PURPOSE The U.S. Nuclear Regulatory Commission (NRC) is issuing this information notice (IN) to inform addressees of the results of Hemyc electrical raceway fire barrier system (ERFBS) full-scale fire tests. The Hemyc ERFBS did not perform for one hour as designed because shrinkage of the Hemyc ERFBS occurred during the testing. It is expected that recipients will review the information for applicability to their facilities and consider actions as appropriate to avoid similar problems. However, suggestions contained in this information notice are not NRC requirements; therefore, no specific action or written response is required. BACKGROUND The Hemyc ERFBS, manufactured by Promatec, Inc., has been installed at nuclear power plants (NPPs) to protect circuits in accordance with regulatory requirements (Reference 1) and plant-specific commitments. As a result of fire protection inspections, unresolved items (URIs) were opened at some nuclear power stations due to questions raised regarding the fire resistance capability of the Hemyc ERFBS (Reference 2). The Office of Nuclear Reactor Regulation (NRR) performed a review of the Hemyc ERFBS (Reference 3) and requested the NRC’s Office of Nuclear Regulatory Research (RES) to perform confirmatory testing of this ERFBS. RES performed the testing at the Omega Point Laboratories in Elmendorf, Texas. DISCUSSION This information notice describes the results of the investigation of the fire resistance capability of the Hemyc ERFBS (Attachment 1). The NRC performed two ASTM E 119 furnace tests on a number of cable raceway types that are protected by the Hemyc ERFBS (with and without air gaps) in accordance with the Hemyc ERFBS test plan (see ADAMS Accession No. ML043210141 for a preliminary version of the test plan). The test plan provides ML050890089 IN 2005-07

    unknown authors

    2005-01-01T23:59:59.000Z

    420

    Rubidium dimers in paraffin-coated cells  

    E-Print Network (OSTI)

    Measurements were made to determine the density of rubidium dimer vapor in paraffin-coated cells. The number density of dimers and atoms in similar paraffin-coated and uncoated cells was measured by optical spectroscopy. Due to the relatively low melting point of paraffin, a limited temperature range of 43-80 deg C was explored, with the lower end corresponding to a dimer density of less than 10^7 cm^(-3). With one-minute integration time, a sensitivity to dimer number density of better than 10^6 cm^(-3) was achieved. No significant difference in dimer density was observed between the cells.

    V. M. Acosta; A. Jarmola; D. Windes; E. Corsini; M. P. Ledbetter; T. Karaulanov; M. Auzinsh; S. A. Rangwala; D. F. Jackson Kimball; D. Budker

    2010-05-03T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    421

    Reactor Shim Control by Coolant Passage Coating  

    SciTech Connect

    Work at North American Aviation in connection with the ReactorSafety Program has suggested the use of a poison-bearing "paint" which would coat reactor coolant channels, and provide a supplement to the control systems of the Hanford reactors. A review of Hanford operating problems indicates that this addition to the present control systems would enable an increase in annual production for each reactor of about 6% or the production equivalent of about 21 days at maximum power level. Installation and maintenance problems for this system would be minor, and development of a suitable coating material appears promising.

    Wheelock, C.W.

    1953-09-17T23:59:59.000Z

    422

    Coating thermal noise for arbitrary shaped beams  

    E-Print Network (OSTI)

    Advanced LIGO's sensitivity will be limited by coating noise. Though this noise depends on beam shape, and though nongaussian beams are being seriously considered for advanced LIGO, no published analysis exists to compare the quantitative thermal noise improvement alternate beams offer. In this paper, we derive and discuss a simple integral which completely characterizes the dependence of coating thermal noise on shape. The derivation used applies equally well, with minor modifications, to all other forms of thermal noise in the low-frequency limit.

    Richard O'Shaughnessy

    2006-07-10T23:59:59.000Z

    423

    Monolayer coated aerogels and method of making  

    Science Conference Proceedings (OSTI)

    Aerogels having a monolayer coating are described. The aerogel and a monolayer forming precursor are provided in a supercritical fluid, whereupon the aerogel and the monolayer forming precursor are reacted in said supercritical fluid to form a covalent bond between the aerogel and the monolayer forming precursor. Suitable aerogels are ceramic oxides such as silica, alumina, aluminosilicate, and combinations thereof. Suitable monolayer forming precursors include alkyl silanes, chlorosilanes, boranes, chloroboranes, germanes, and combinations thereof. The method may also include providing a surface preparation agent such as water, or hydroetching an aerogel to enhance the coating of the monolayer.

    Zemanian, Thomas Samuel (Richland, WA); Fryxell, Glen (Kennwick, WA); Ustyugov, Oleksiy A. (Spokane, WA)

    2006-03-28T23:59:59.000Z

    424

    Optics and multilayer coatings for EUVL systems  

    Science Conference Proceedings (OSTI)

    EUV lithography (EUVL) employs illumination wavelengths around 13.5 nm, and in many aspects it is considered an extension of optical lithography, which is used for the high-volume manufacturing (HVM) of today's microprocessors. The EUV wavelength of illumination dictates the use of reflective optical elements (mirrors) as opposed to the refractive lenses used in conventional lithographic systems. Thus, EUVL tools are based on all-reflective concepts: they use multilayer (ML) coated optics for their illumination and projection systems, and they have a ML-coated reflective mask.

    Soufli, R; Bajt, S; Hudyma, R M; Taylor, J S

    2008-03-21T23:59:59.000Z

    425

    Production of porous coating on a prosthesis  

    DOE Patents (OSTI)

    Preselected surface areas of a prosthesis are covered by a blend of matching primary metallic particles and expendable particles. The particles are compressed and heated to assure that deformation and metallurgical bonding occurs between them and between the primary particles and the surface boundaries of the prosthesis. Porosity is achieved by removal of the expendable material. The result is a coating including discrete bonded particles separated by a network of interconnected voids presenting a homogeneous porous coating about the substrate. It has strength suitable for bone implant usage without intermediate adhesives, and adequate porosity to promote subsequent bone ingrowth.

    Sump, Kenneth R. (Richland, WA)

    1987-01-01T23:59:59.000Z

    426

    ALLOY COATINGS AND METHOD OF APPLYING  

    DOE Patents (OSTI)

    A method for providing uranium articles with a pro tective coating by a single dip coating process is presented. The uranium article is dipped into a molten zinc bath containing a small percentage of aluminum. The resultant product is a uranium article covered with a thin undercoat consisting of a uranium-aluminum alloy with a small amount of zinc, and an outer layer consisting of zinc and aluminum. The article may be used as is, or aluminum sheathing may then be bonded to the aluminum zinc outer layer.

    Eubank, L.D.; Boller, E.R.

    1958-08-26T23:59:59.000Z

    427

    Commercial Air Barrier Requirements for Insulated Ceilings - Code Notes |  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Air Barrier Requirements for Insulated Ceilings - Code Notes Air Barrier Requirements for Insulated Ceilings - Code Notes The 2009 International Energy Conservation Code requires openings in the building envelope to be sealed to prevent air leakage into and out of the space, including an air barrier at insulation installations. Publication Date: Wednesday, June 22, 2011 cn_commercial_air_barrier_requirements_for_insulated_ceilings.pdf Document Details Prepared by: Pacific Northwest National Laboratory for the U.S. Department of Energy Building Energy Codes Program Focus: Compliance Building Type: Commercial Code Referenced: ASHRAE Standard 90.1-2007 2009 IECC Document type: Code Notes Target Audience: Architect/Designer Builder Code Official Contractor Engineer Contacts Web Site Policies U.S. Department of Energy USA.gov Last Updated: Thursday, September 20, 2012 - 17:25

    428

    Obstacles and Opportunity: Overcoming Barriers in Today's CHP Marketplace  

    E-Print Network (OSTI)

    Combined heat and power (CHP), which can offer tremendous efficiency benefits to industrial facilities around the country, continues to be viewed as a long-term efficiency opportunity. However, the high up-front cost of CHP equipment and fuel-dependent operating costs have made CHP a difficult sell internally in some corporations. The recent recession and slow recovery have further discouraged facility managers and owners from making large capital investments such as CHP. This paper addresses the biggest barriers to new CHP project development from the perspective of those intimately involved in moving new CHP projects forward: CHP developers and CHP advocates. It identifies economic and financial barriers as the largest common barriers found throughout the U.S. It also suggests ways that CHP developers and advocates can address these barriers, and attempts to overcome them in the current economic context.

    Chittum, A.; Kaufman, N.

    2011-01-01T23:59:59.000Z

    429

    Determine Employee Commuting Incentives and Barriers for Greenhouse Gas  

    Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

    Determine Employee Commuting Incentives and Barriers for Greenhouse Determine Employee Commuting Incentives and Barriers for Greenhouse Gas Profile Determine Employee Commuting Incentives and Barriers for Greenhouse Gas Profile October 7, 2013 - 2:23pm Addthis YOU ARE HERE Step 2 Finally, when evaluating a greenhouse gas (GHG) profile, it is important to consider what specific incentives would most influence an employee's decision to adopt an alternative to single-occupancy vehicle commuting and what employees perceive as major barriers to using certain alternatives. Agencies must determine whether they can influence commute behavior changes with the strategies described in the following section. To illustrate, survey data from Worksite B2 in Figure 1 below summarize the reasons why employees drive alone and factors that would motivate them to

    430

    Through-Barrier Electromagnetic Communication and Sensing: Advances in  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Through-Barrier Electromagnetic Communication and Sensing: Advances in Through-Barrier Electromagnetic Communication and Sensing: Advances in Wideband Radio-Wave Communications and ..... Speaker(s): Farid Dowla Date: June 1, 2007 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Mary Ann Piette (Complete seminar title is: Through-Barrier Electromagnetic Communication and Sensing: Advances in Wideband Radio-Wave Communications and Radar Imaging, Radio-Frequency (RF) Tags and Tera-Hertz (THz) Standoff Detection Spectroscopy) In many remote sensing problems there is a critical need to detect and image objects through barriers, such as buildings, with high reliability and resolution and at long ranges. A related problem is the wireless communication and geolocation of transceivers in harsh RF environments, such as in urban areas and underground caves, where

    431

    Market and Policy Barriers for Demand Response Providing Ancillary Services  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Market and Policy Barriers for Demand Response Providing Ancillary Services Market and Policy Barriers for Demand Response Providing Ancillary Services in U.S. Markets Title Market and Policy Barriers for Demand Response Providing Ancillary Services in U.S. Markets Publication Type Report LBNL Report Number LBNL-6155E Year of Publication 2013 Authors Cappers, Peter, Jason MacDonald, and Charles A. Goldman Date Published 03/2013 Keywords advanced metering infrastructure, aggregators of retail customers, ancillary services, demand response, electric utility regulation, electricity market rules, electricity markets and policy group, energy analysis and environmental impacts department, institutional barriers, market and value, operating reserves, retail electricity providers, retail electricity tariffs, smart grid Attachment Size

    432

    Hanford Permanent Isolation Barrier Program: Asphalt technology test plan  

    SciTech Connect

    The Hanford Permanent Isolation Barriers use engineered layers of natural materials to create an integrated structure with backup protective features. The objective of current designs is to develop a maintenance-free permanent barrier that isolates wastes for a minimum of 1000 years by limiting water drainage to near-zero amounts. Asphalt is being used as an impermeable water diversion layer to provide a redundant layer within the overall barrier design. Data on asphalt barrier properties in a buried environment are not available for the required 100-year time frame. The purpose of this test plan is to outline the activities planned to obtain data with which to estimate performance of the asphalt layers.

    Freeman, H.D.; Romine, R.A.

    1994-05-01T23:59:59.000Z

    433

    Household Preferences for Supporting Renewable Energy, and Barriers...  

    NLE Websites -- All DOE Office Websites (Extended Search)

    Household Preferences for Supporting Renewable Energy, and Barriers to Green Power Demand Speaker(s): Ryan Wiser Date: May 9, 2002 - 12:00pm Location: Bldg. 90 Nearly 40% of the...

    434

    Economic evaluation of closure cap barrier materials study  

    SciTech Connect

    Volume II of the Economic Evaluation of the Closure Cap Barrier Materials, Revision I contains detailed cost estimates for closure cap barrier materials. The cost estimates incorporate the life cycle costs for a generic hazardous waste seepage basin closure cap under the RCRA Post Closure Period of thirty years. The economic evaluation assessed six barrier material categories. Each of these categories consists of several composite cover system configurations, which were used to develop individual cost estimates. The information contained in this report is not intended to be used as a cost estimating manual. This information provides the decision makers with the ability to screen barrier materials, cover system configurations, and identify cost-effective materials for further consideration.

    Serrato, M.G.; Bhutani, J.S.; Mead, S.M.

    1993-09-01T23:59:59.000Z

    435

    TANK FARM INTERIM SURFACE BARRIER MATERIALS AND RUNOFF ALTERNATIVES STUDY  

    SciTech Connect

    This report identifies candidate materials and concepts for interim surface barriers in the single-shell tank farms. An analysis of these materials for application to the TY tank farm is also provided.

    HOLM MJ

    2009-06-25T23:59:59.000Z

    436

    Nontechnical Barriers to Solar Energy Use: Review of Recent Literature  

    DOE Green Energy (OSTI)

    This paper reviews the nontechnical barriers to solar energy use, drawing on recent literature to help identify key barriers that must be addressed as part of the Technology Acceptance efforts under the U.S. Department of Energy (DOE) Solar America Initiative. A broad literature search yielded more than 400 references, which were narrowed to 19 recent documents on nontechnical barriers to the use of solar energy and other energy efficiency and renewable energy (EE/RE) technologies. Some of the most frequently identified barriers included lack of government policy supporting EE/RE, lack of information dissemination and consumer awareness about energy and EE/RE, high cost of solar and other EE/RE technologies compared with conventional energy, and inadequate financing options for EE/RE projects.

    Margolis, R.; Zuboy, J.

    2006-09-01T23:59:59.000Z

    437

    Moisture Measurements in Residential Attics Containing Radiant Barriers  

    Science Conference Proceedings (OSTI)

    Horizontal radiant barriers, rigorously tested during a typical Tennessee winter, allowed moisture to dissipate on a diurnal cycle and caused no structural, wet insulation, or stained-ceiling problems.

    1989-08-21T23:59:59.000Z

    438

    Fusion dynamics of symmetric systems near barrier energies  

    E-Print Network (OSTI)

    The enhancement of the sub-barrier fusion cross sections was explained as the lowering of the dynamical fusion barriers within the framework of the improved isospin-dependent quantum molecular dynamics (ImIQMD) model. The numbers of nucleon transfer in the neck region are appreciably dependent on the incident energies, but strongly on the reaction systems. A comparison of the neck dynamics is performed for the symmetric reactions $^{58}$Ni+$^{58}$Ni and $^{64}$Ni+$^{64}$Ni at energies in the vicinity of the Coulomb barrier. An increase of the ratios of neutron to proton in the neck region at initial collision stage is observed and obvious for neutron-rich systems, which can reduce the interaction potential of two colliding nuclei. The distribution of the dynamical fusion barriers and the fusion excitation functions are calculated and compared them with the available experimental data.

    Zhao-Qing Feng; Gen-Ming Jin

    2009-09-06T23:59:59.000Z

    439

    Method of applying coatings to substrates and the novel coatings produced thereby  

    DOE Patents (OSTI)

    A method for applying novel coatings to substrates is provided. The ends of a multiplicity of rods of different materials are melted by focused beams of laser light. Individual electric fields are applied to each of the molten rod ends, thereby ejecting charged particles that include droplets, atomic clusters, molecules, and atoms. The charged particles are separately transported, by the accelerations provided by electric potentials produced by an electrode structure, to substrates where they combine and form the coatings. Layered and thickness graded coatings comprised of hitherto unavailable compositions, are provided. 2 figs.

    Hendricks, C.D.

    1987-09-15T23:59:59.000Z

    440

    Hanford Permanent Isolation Barrier Program: Asphalt technology development  

    SciTech Connect

    An important component of the Hanford Permanent Isolation Barrier is the use of a two-layer composite asphalt system, which provides backup water diversion capabilities if the primary capillary barrier fails to meet infiltration goals. Because of asphalt`s potential to perform to specification over the 1000-year design life criterion, a composite asphalt barrier (HMAC/fluid-applied polymer-modified asphalt) is being considered as an alternative to the bentonite clay/high density poly(ethylene) barriers for the low-permeability component of the Hanford Permanent Isolation Barrier. The feasibility of using asphalt as a long-term barrier is currently being studied. Information that must be known is the ability of asphalt to retain desirable physical properties over a period of 1000 years. This paper presents the approach for performing accelerated aging tests and evaluating the performance of samples under accelerated conditions. The results of these tests will be compared with asphalt artifact analogs and the results of modeling the degradation of the selected asphalt composite to make life-cycle predictions.

    Freeman, H.D.; Romine, R.A.

    1994-11-01T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    441

    Ocean Barrier Layers’ Effect on Tropical Cyclone Intensification  

    SciTech Connect

    Improving a tropical cyclone's forecast and mitigating its destructive potential requires knowledge of various environmental factors that influence the cyclone's path and intensity. Herein, using a combination of observations and model simulations, we systematically demonstrate that tropical cyclone intensification is significantly affected by salinity-induced barrier layers, which are 'quasi-permanent' features in the upper tropical oceans. When tropical cyclones pass over regions with barrier layers, the increased stratification and stability within the layer reduce storm-induced vertical mixing and sea surface temperature cooling. This causes an increase in enthalpy flux from the ocean to the atmosphere and, consequently, an intensification of tropical cyclones. On average, the tropical cyclone intensification rate is nearly 50% higher over regions with barrier layers, compared to regions without. Our finding, which underscores the importance of observing not only the upper-ocean thermal structure but also the salinity structure in deep tropical barrier layer regions, may be a key to more skillful predictions of tropical cyclone intensities through improved ocean state estimates and simulations of barrier layer processes. As the hydrological cycle responds to global warming, any associated changes in the barrier layer distribution must be considered in projecting future tropical cyclone activity.

    Balaguru, Karthik; Chang, P.; Saravanan, R.; Leung, Lai-Yung R.; Xu, Zhao; Li, M.; Hsieh, J.

    2012-09-04T23:59:59.000Z

    442

    Electrode coating composed of copolymers derived from diacetone acrylamide  

    SciTech Connect

    An improved electrode coating and separator coating derived from a copolymer of diacetone acrylamide and a polymerizable monomer. This invention relates to novel rechargeable electrodes, separators and processes for preparing same.

    Rampel, G.

    1985-07-23T23:59:59.000Z

    443

    Atomic layer deposition for the conformal coating of nanoporous materials  

    Science Conference Proceedings (OSTI)

    Atomic layer deposition (ALD) is ideal for applying precise and conformal coatings over nanoporous materials. We have recently used ALD to coat two nanoporous solids: anodic aluminum oxide (AAO) and silica aerogels. AAO possesses hexagonally ordered ...

    Jeffrey W. Elam; Guang Xiong; Catherine Y. Han; H. Hau Wang; James P. Birrell; Ulrich Welp; John N. Hryn; Michael J. Pellin; Theodore F. Baumann; John F. Poco; Joe H. Satcher, Jr.

    2006-01-01T23:59:59.000Z

    444

    Biological, Electronic, and Functional Thin Films and Coatings I  

    Science Conference Proceedings (OSTI)

    Mar 4, 2013... scan (PPS) and electrical impedance spectroscopy (EIS). ... Eclipse Active and Passive Solar Control Coatings: Hulya ... In this paper two novel thin film coating systems will be presented for energy conservation solar ...

    445

    SLAC National Accelerator Laboratory - Diamond-like Coating Improves...  

    NLE Websites -- All DOE Office Websites (Extended Search)

    News Feature Archive Diamond-like Coating Improves Electron Microscope Images By Mike Ross November 26, 2012 Coating the surface of a material with a single layer of diamond-like...

    446

    Polymer-coated iron oxide nanoparticles for medical imaging  

    E-Print Network (OSTI)

    One of the most versatile and safe materials used in medicine are polymer-coated iron oxide nanoparticles. This dissertation describes several formulations for in vivo imaging applications. The paramagnetic polymer-coated ...

    Chen, Suelin, Ph.D. Massachusetts Institute of Technology

    2010-01-01T23:59:59.000Z

    447

    Hydrogen permeable protective coating for a catalytic surface  

    DOE Patents (OSTI)

    A protective coating for a surface comprising a layer permeable to hydrogen, said coating being deposited on a catalyst layer; wherein the catalytic activity of the catalyst layer is preserved.

    Liu, Ping (Irvine, CA); Tracy, C. Edwin (Golen, CO); Pitts, J. Roland (Lakewood, CO); Lee, Se-Hee (Lakewood, CO)

    2007-06-19T23:59:59.000Z

    448

    Low Pressure Plasma Technologies for Multifunctional Coatings and ...  

    Science Conference Proceedings (OSTI)

    Presentation Title, Low Pressure Plasma Technologies for Multifunctional Coatings and ... Examples will include energy saving (smart radiators for satellites, low ...

    449

    Chromium-free Conversion Coatings for Aerospace Aluminum Alloys  

    Science Conference Proceedings (OSTI)

    About this Abstract. Meeting, Materials Science & Technology 2013. Symposium, Predicting and Combating Corrosion and Degradation of New Coating and ...

    450

    Graphene Coated with Titanium Nitride as Electrode Materials for ...  

    Science Conference Proceedings (OSTI)

    About this Abstract. Meeting, 2013 TMS Annual Meeting & Exhibition. Symposium , 2013 and Beyond: Flexible Electronics. Presentation Title, Graphene Coated ...

    451

    Advanced Conductive Coating Performance under Long-term SOFC ...  

    Science Conference Proceedings (OSTI)

    A Slag Management System for Gasification Operations · Advanced Conductive Coating Performance under Long-term SOFC Operating Conditions · Advanced ...

    452

    RAPID-CURE COATINGS SYSTEM - Home - Energy Innovation Portal  

    Technology Marketing Summary The Naval Research Laboratory has developed a durable, rapid cure coatings system that is designed for harsh ...

    453

    High Energy Density Coating Processing for Oil and Gas Applications  

    Science Conference Proceedings (OSTI)

    About this Abstract. Meeting, Materials Science & Technology 2011. Symposium, Corrosion Protection through Metallic and Non-Metallic Coatings. Presentation ...

    454

    ZnO Nanorods as Antireflective Coatings for Single Crystalline ...  

    Science Conference Proceedings (OSTI)

    Graphene Coating-enabled Surface Plasmon Coupled Emission and Optical Diode ... Synthesis of Monolithic Iron Incorporated Silica Aerogels by Ambient ...

    455

    Superhydrophobic Coatings Using Double-Silane Treated Silica ...  

    Disclosure Number 201202928 Technology Summary This invention relates to superhydrophobic coatings and more specifically to durability improvements. ...

    456

    Coatings and Surface Treatments for Application on a Martensitic ...  

    Science Conference Proceedings (OSTI)

    Long-Term Surface Restoration Effect Introduced by Advanced Lubricant Additive · Nanocomposite Thermal Spray Coatings. New Hardfacing Overlay Claddings ...

    457

    Change of Stress-Strain Behaviors in EB-PVD TBC Coating Systems ...  

    Science Conference Proceedings (OSTI)

    ... coating system, axial stress born by applied external condition changes from compression to tension. ... Aerospace Coatings via Directed Vapor Deposition.

    458

    ENGINEERED BARRIER SYSTEM FEATURES, EVENTS AND PROCESSES  

    Science Conference Proceedings (OSTI)

    The purpose of this report is to evaluate and document the inclusion or exclusion of engineered barrier system (EBS) features, events, and processes (FEPs) with respect to models and analyses used to support the total system performance assessment for the license application (TSPA-LA). A screening decision, either Included or Excluded, is given for each FEP along with the technical basis for exclusion screening decisions. This information is required by the U.S. Nuclear Regulatory Commission (NRC) at 10 CFR 63.114 (d, e, and f) [DIRS 173273]. The FEPs addressed in this report deal with those features, events, and processes relevant to the EBS focusing mainly on those components and conditions exterior to the waste package and within the rock mass surrounding emplacement drifts. The components of the EBS are the drip shield, waste package, waste form, cladding, emplacement pallet, emplacement drift excavated opening (also referred to as drift opening in this report), and invert. FEPs specific to the waste package, cladding, and drip shield are addressed in separate FEP reports: for example, ''Screening of Features, Events, and Processes in Drip Shield and Waste Package Degradation'' (BSC 2005 [DIRS 174995]), ''Clad Degradation--FEPs Screening Arguments (BSC 2004 [DIRS 170019]), and Waste-Form Features, Events, and Processes'' (BSC 2004 [DIRS 170020]). For included FEPs, this report summarizes the implementation of the FEP in the TSPA-LA (i.e., how the FEP is included). For excluded FEPs, this analysis provides the technical basis for exclusion from TSPA-LA (i.e., why the FEP is excluded). This report also documents changes to the EBS FEPs list that have occurred since the previous versions of this report. These changes have resulted due to a reevaluation of the FEPs for TSPA-LA as identified in Section 1.2 of this report and described in more detail in Section 6.1.1. This revision addresses updates in Yucca Mountain Project (YMP) administrative procedures as they pertain to this report; the current procedures are addressed in Section 2. This revision also addresses updates to the technical basis in supporting analysis and model reports and corroborative documentation, as presented in Sections 4 and 6 of this report. Finally, Sections 4, 5, and 6 of this report provide additional information pertaining to the relevant FEPs-related Acceptance Criteria presented in ''Yucca Mountain Review Plan, Final Report'' (YMRP) (NRC 2003 [DIRS 163274], Sections 2.2.1.2.1.3 and 2.2.1.3.3.3).

    Jaros, W.

    2005-08-30T23:59:59.000Z

    459

    IRON COATED URANIUM AND ITS PRODUCTION  

    DOE Patents (OSTI)

    A method of applying a protective coating to a metallic uranium article is given. The method comprises etching the surface of the article with an etchant solution containlng chloride ions, such as a solution of phosphoric acid and hydrochloric acid, cleaning the etched surface, electroplating iron thereon from a ferrous ammonium sulfate electroplating bath, and soldering an aluminum sheath to the resultant iron layer.

    Gray, A.G.

    1960-03-15T23:59:59.000Z

    460

    Solid alcohol fuel with hydration inhibiting coating  

    Science Conference Proceedings (OSTI)

    This patent describes a process for preparing a solid alcohol fuel. It comprises: mixing an alcohol solution with a cellulose derivative having a hydration inhibiting coating thereby forming a slurry and then adding an effective amount sufficient to increase the pH level above 8, of a caustic material so as to effect hydration and solidification.

    Gartner, S.

    1990-11-20T23:59:59.000Z

    Note: This page contains sample records for the topic "barrier coatings cxs" from the National Library of EnergyBeta (NLEBeta).
    While these samples are representative of the content of NLEBeta,
    they are not comprehensive nor are they the most current set.
    We encourage you to perform a real-time search of NLEBeta
    to obtain the most current and comprehensive results.


    461

    Organosiloxane-grafted natural polymer coatings  

    DOE Patents (OSTI)

    A new family of polysaccharide graft polymers are provided as corrosion resistant coatings having antimicrobial properties which are useful on light metals such as aluminum, magnesium, zinc, steel and their alloys. Methods of making the polysaccharide graft polymers are also included. The methods of making the polysaccharide graft polymers involve reacting a polysaccharide source with an antimicrobial agent under conditions of hydrolysis-condensation.

    Sugama, Toshifumi (Wading River, NY)

    1998-01-01T23:59:59.000Z

    462

    Corrosion protective coating for metallic materials  

    DOE Patents (OSTI)

    Corrosion protective coatings for metallic materials, particularly aluminum and aluminum alloys, produced with simple, low-cost equipment and materials other than toxic metals or metal salts, or metal cyanides. The metallic material is cleaned, degreased, and deoxidized, the surface is converted to a substantially alkaline condition, and the surface is chemically sealed with inorganic metal compounds.

    Buchheit, Rudolph G. (Albuquerque, NM); Martinez, Michael A. (Albuquerque, NM)

    1998-01-01T23:59:59.000Z

    463

    Pentek metal coating removal system: Baseline report  

    SciTech Connect

    The Pentek coating removal technology was tested and is being evaluated at Florida International University (FIU) as a baseline technology. In conjunction with FIU`s evaluation of efficiency and cost, this report covers evaluation conducted for safety and health issues. It is a commercially available technology and has been used for various projects at locations throughout the country. The Pentek coating removal system consisted of the ROTO-PEEN Scaler, CORNER-CUTTER{reg_sign}, and VAC-PAC{reg_sign}. They are designed to remove coatings from steel, concrete, brick, and wood. The Scaler uses 3M Roto Peen tungsten carbide cutters while the CORNER-CUTTER{reg_sign} uses solid needles for descaling activities. These hand tools are used with the VAC-PAC{reg_sign} vacuum system to capture dust and debris as removal of the coating takes place. The safety and health evaluation during the testing demonstration focused on two main areas of exposure: dust and noise. Dust exposure minimal, but noise exposure was significant. Further testing for each exposure is recommended because of the environment where the testing demonstration took place. It is feasible that the dust and noise levels will be higher in an enclosed operating environment of different construction. In addition, other areas of concern found were arm-hand vibration, whole-body, ergonomics, heat stress, tripping hazards, electrical hazards, machine guarding, and lockout/tagout.

    1997-07-31T23:59:59.000Z

    464

    Coatings with controlled porosity and chemical properties  

    DOE Patents (OSTI)

    Coatings and sensors are described having both steric and chemical selectivity. Controlled porosity provides the steric selectivity, whereas chemically tailored film properties, using controlled composition or modification by coupling agents, chemical species replacement, or chemical species within pores, provide the chemical selectivity. Single or multiple layers may be provided.

    Frye, G.C.; Brinker, C.J.; Doughty, D.H.; Bein, T.; Moller, K.

    1993-07-06T23:59:59.000Z

    465

    Coatings with controlled porosity and chemical properties  

    DOE Patents (OSTI)

    Coatings and sensors having both steric and chemical selectivity. Controlled porosity provides the steric selectivity, whereas chemically tailored film properties, using controlled composition or modification by coupling agents, chemical species replacement, or chemical species within pores, provide the chemical selectivity. Single or multiple layers may be provided.

    Frye, Gregory C. (P.O. Box 763, Cedar Crest, NM 87008); Brinker, C. Jeffrey (14 Eagle Nest Dr., NE., Albuquerque, NM 87122); Doughty, Daniel H. (11724 Woodmar La., NE., Albuquerque, NM 87111); Bein, Thomas (1114 Princeton Dr., NE., Albuquerque, NM 87106); Moller, Karin (1114 Princeton Dr., NE., Albuquerque, NM 87106)

    1993-01-01T23:59:59.000Z

    466

    Coatings with controlled porosity and chemical properties  

    DOE Patents (OSTI)

    Coatings and sensors having both steric and chemical selectivity. Controlled porosity provides the steric selectivity, whereas chemically tailored film properties, using controlled composition or modification by coupling agents, chemical species replacement, or chemical species within pores, provide the chemical selectivity. Single or multiple layers may be provided.

    Frye, Gregory C. (Bernalillo County, NM); Brinker, C. Jeffrey (Albuquerque, NM); Doughty, Daniel H. (Albuquerque, NM); Bein, Thomas (Albuquerque, NM); Moller, Karin (Albuquerque, NM)

    1996-01-01T23:59:59.000Z

    467

    Surface coating for prevention of crust formation  

    DOE Patents (OSTI)

    A flexible surface coating which promotes the removal of deposits as they reach the surface by preventing adhesion and crust formation. Flexible layers are attached to each side of a flexible mesh substrate comprising of a plurality of zones composed of one or more neighboring cells, each zone having a different compressibility than its adjacent zones. The substrate is composed of a mesh made of strands and open cells. The cells may be filled with foam. Studs or bearings may also be positioned in the cells to increase the variation in compressibility and thus the degree of flexing of the coating. Surface loading produces varying amounts of compression from point to point causing the coating to flex as deposits reach it, breaking up any hardening deposits before a continuous crust forms. Preferably one or more additional layers are also used, such as an outer layer of a non-stick material such as TEFLON, which may be pigmented, and an inner, adhesive layer to facilitate applying the coating to a surface.

    Kronberg, James W. (Aiken, SC)

    1994-01-01T23:59:59.000Z

    468

    Coated semiconductor devices for neutron detection  

    DOE Green Energy (OSTI)

    A device for detecting neutrons includes a semi-insulated bulk semiconductor substrate having opposed polished surfaces. A blocking Schottky contact comprised of a series of metals such as Ti, Pt, Au, Ge, Pd, and Ni is formed on a first polished surface of the semiconductor substrate, while a low resistivity ("ohmic") contact comprised of metals such as Au, Ge, and Ni is formed on a second, opposed polished surface of the substrate. In one embodiment, n-type low resistivity pinout contacts comprised of an Au/Ge based eutectic alloy or multi-layered Pd/Ge/Ti/Au are also formed on the opposed polished surfaces and in contact with the Schottky and ohmic contacts. Disposed on the Schottky contact is a neutron reactive film, or coating, for detecting neutrons. The coating is comprised of a hydrogen rich polymer, such as a polyolefin or paraffin; lithium or lithium fluoride; or a heavy metal fissionable material. By varying the coating thickness and electrical settings, neutrons at specific energies can be detected. The coated neutron detector is capable of performing real-time neutron radiography in high gamma fields, digital fast neutron radiography, fissile material identification, and basic neutron detection particularly in high radiation fields.

    Klann, Raymond T. (Bolingbrook, IL); McGregor, Douglas S. (Whitmore Lake, MI)

    2002-01-01T23:59:59.000Z

    469

    Testing of coatings for the nuclear industry  

    SciTech Connect

    Coatings for commercial nuclear power plants need to withstand humidity, radiation exposure, and LOC accident conditions; they also must be decontaminable. Tests for decontaminability, radiation stability, and design-basis-accident (DBA) resistance are described. An irradiation test facility using spent fuel assemblies and a spray loop for simulating a DBA are described. A sample test report sheet is presented. (DLC)

    Goldberg, G.

    1975-01-01T23:59:59.000Z

    470

    CORROSION-RESISTANT COATING FOR CARBONATE  

    E-Print Network (OSTI)

    on the following six RD&D program areas: · Residential and Commercial Building End-Use Energy EfficiencyCORROSION-RESISTANT COATING FOR CARBONATE FUEL CELL COMPONENTS Prepared For: California Energy · Industrial/Agricultural/Water End-Use Energy Efficiency · Renewable Energy Technologies · Environmentally

    471

    Biocatalytic material comprising multilayer enzyme coated fiber  

    DOE Patents (OSTI)

    The present invention relates generally to high stability, high activity biocatalytic materials and processes for using the same. The materials comprise enzyme aggregate coatings having high biocatalytic activity and stability useful in heterogeneous environment. These new materials provide a new biocatalytic immobilized enzyme system with applications in bioconversion, bioremediation, biosensors, and biofuel cells.

    Kim, Jungbae [Richland, WA; Kwak, Ja Hun [Richland, WA; Grate, Jay W [West Richland, WA

    2009-11-03T23:59:59.000Z

    472

    Pyrolytic carbon-coated nuclear fuel  

    DOE Patents (OSTI)

    An improved nuclear fuel kernel having at least one pyrolytic carbon coating and a silicon carbon layer is provided in which extensive interaction of fission product lanthanides with the silicon carbon layer is avoided by providing sufficient UO.sub.2 to maintain the lanthanides as oxides during in-reactor use of said fuel.

    Lindemer, Terrence B. (Oak Ridge, TN); Long, Jr., Ernest L. (Oak Ridge, TN); Beatty, Ronald L. (Wurlingen, CH)

    1978-01-01T23:59:59.000Z

    473

    High temperature ceramic articles having corrosion resistant coating  

    DOE Patents (OSTI)

    A ceramic article which includes a porous body of SiC fibers, Si.sub.3 N.sub.4 fibers, SiC coated fibers or Si.sub.3 N.sub.4 coated fibers, having at least one surface, the article having a coating of AlN adherently disposed throughout at least a portion of the porous body.

    Stinton, David P. (Knoxville, TN); Lee, Woo Y. (Knoxville, TN)

    1997-01-01T23:59:59.000Z

    474

    High Temperature coatings based on {beta}-NiAI  

    Science Conference Proceedings (OSTI)

    High temperature alloys are reviewed, focusing on current superalloys and their coatings. The synthesis, characerization, and oxidation performance of a NiAl–TiB{sub 2} composite are explained. A novel coating process for Mo–Ni–Al alloys for improved oxidation performance is examined. The cyclic oxidation performance of coated and uncoated Mo–Ni–Al alloys is discussed.

    Severs, Kevin

    2012-07-10T23:59:59.000Z

    475

    FABRICATION OF GAS-FILLED TUNGSTEN-COATED GLASS SHELLS  

    SciTech Connect

    OAK-B135 Deuterium (D{sub 2}) filled glass shells coated with a high Z element are needed for high energy density (HED) experiments by researchers at Los Alamos National Laboratory. They report here on our initial attempt to produce such shells. Glass shells made using the drop tower technique were coated with gold, palladium or tungsten, or a mixture of two of these elements. It was found that gold and palladium coatings did not stick well to the glass and resulted in poor or delaminated films. Tungsten coatings resulted in films suitable for these targets. Bouncing of shells during coating resulted in uniform tungsten coatings, but the surface of such coatings were filled with small nodules. Proper agitation of shells using a tapping technique resulted in smooth films with minimal particulate contamination. For coating rates of {approx} 0.15 {micro}m/hr coatings with {approx} 2 nm RMS surface finish could be deposited. The surface roughness of coatings at higher rates, 0.7 {micro}m/hr, was considerably worse ({approx} 100 nm RMS). The columnar structure of the coatings allowed permeation filling of the tungsten coated glass shells with deuterium at 300 C.

    NIKROO,A; BAUGH,W; STEINMAN,D.A

    2003-06-01T23:59:59.000Z

    476

    Method for forming hermetic coatings for optical fibers  

    DOE Patents (OSTI)

    A method for forming hermetic coatings on optical fibers by hot filament assisted chemical vapor deposition advantageously produces a desirable coating while maintaining the pristine strength of the pristine fiber. The hermetic coatings may be formed from a variety of substances, such as, for example, boron nitride and carbon.

    Michalske, Terry A. (P.O. Box 1042, Cedar Crest, NM 87008); Rye, Robert R. (1304 Espanola NE., Albuquerque, NM 87110); Smith, William L. (9916 Fostoria Rd., NE., Albuquerque, NM 87111)

    1993-01-01T23:59:59.000Z

    477

    Sodium sulfur container with chromium/chromium oxide coating  

    SciTech Connect

    A coating of chromium/chromium oxide is disclosed for coating the surfaces of electrically conducting components of a sodium sulfur battery. This chromium/chromium oxide coating is placed on the surfaces of the electrically conducting components of the battery which are in contact with molten polysulfide and sulfur reactants during battery operation.

    Ludwig, Frank A. (Irvine, CA); Higley, Lin R. (Santa Ana, CA)

    1981-01-01T23:59:59.000Z

    478

    Third (March 2006) Coring and Analysis of Zero-Valent Iron Permeable Reactive Barrier, Monticello, Utah  

    Energy.gov (U.S. Department of Energy (DOE))

    Third (March 2006) Coring and Analysis of Zero-Valent Iron Permeable Reactive Barrier, Monticello, Utah