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Note: This page contains sample records for the topic "6061-t6 aluminum view" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Glow discharge cleaning and vacuum deposition of copper on 6061-T6 aluminum  

SciTech Connect (OSTI)

Prior to plating electroless nickel onto a part made of 6061-T6 aluminum, several aqueous pretreatment steps are required which end with the deposition of a thin copper layer covering the part. In an effort to minimize the quantity and type of wastes generated during this pretreatment process, vacuum deposition methods are under evaluation as an alternative. Six vacuum cleaning/copper deposition experiments have been conducted on 6061-T6 aluminum coupons. The coupons were glow discharge cleaned at 1500, 2000 and 2500 volts and a copper coating was either sputtered deposited or ion plated onto the aluminum substrate. The results showed that the adhesive strength of the copper coating was greatest for those coupons cleaned at 2500 volts and ion plated. Glow discharge cleaning was greatest for those coupons cleaned at 2500 volts and ion plated. Glow discharge cleaning at 1500 and 2000 volts resulted in copper films that were porous while those cleaned at 2500 volts were not. The results further showed that ion plated copper films of appropriate thickness can be produced while the aluminum alloy is precipitation hardened. 3 refs., 9 figs., 3 tabs.

Vasofsky, R.W.; Corbett, W.D. Jr.

1991-02-25T23:59:59.000Z

2

E-Print Network 3.0 - aa6061-t6 circular extrusions Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

T6, aluminum, chromate, coatings, corrosion resistance... , coatings were formed on AA 1100 and AA 6061-T6 in the manner described and allowed to dry in ambient lab... , 250C,...

3

E-Print Network 3.0 - aleacion aa6061-t6 por Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

T6, aluminum, chromate, coatings, corrosion resistance... , coatings were formed on AA 1100 and AA 6061-T6 in the manner described and allowed to dry in ambient lab... , 250C,...

4

Corrosion of Bare and Coated Al 5052-H3 and Al 6061-T6 in Seawater Work sponsored by  

E-Print Network [OSTI]

1 Corrosion of Bare and Coated Al 5052-H3 and Al 6061-T6 in Seawater Work sponsored by: US and Kentaro Kusada Hawaii Corrosion Laboratory Department of Mechanical Engineering College of Engineering

5

Aluminum-tungsten fiber composites with cylindrical geometry and controlled architecture of tungsten reinforcement  

E-Print Network [OSTI]

Aluminum alloys, including 6061-T6 are used in the automotivealuminum composite could also be adapted to other applications such as selective strengthening in an automotive

Lucchese, Carl Joesph

2010-01-01T23:59:59.000Z

6

E-Print Network 3.0 - aluminum alloy 6061-t6 Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

compatible for low stress applicationsstress applications ... Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel Cells and Infrastructure...

7

Structure/property relations of aluminum under varying rates and stress states  

SciTech Connect (OSTI)

In this work we analyze the plasticity, damage, and fracture characteristics of three different processed aluminum alloys (rolled 5083-H13, cast A356-T6, and extruded 6061-T6) under varying stress states (tension, compression, and torsion) and strain rates (0.001/, 1/s., and 1000/s). The stress state difference had more of a flow stress effect than the applied strain rates for those given in this study (0.001/sec up to 1000/sec). The stress state and strain rate also had a profound effect on the damage evolution of each aluminum alloy. Tension and torsional straining gave much greater damage nucleation rates than compression. Although the damage of all three alloys was found to be void nucleation dominated, the A356-T6 and 5083-H131 aluminum alloys incurred void damage via micron scale particles where the 6061-T6 aluminum alloy incurred void damage from two scales, micron-scale particles and nanoscale precipitates. Having two length scales of particles that participated in the damage evolution made the 6061-T6 incur a strain rate sensitive damage rate that was different than the other two aluminum alloys. Under tension, as the strain rate increased, the 6061-T6 aluminum alloy's void nucleation rate decreased, but the A356-T6 and 5083-H131 aluminum alloys void nucleation rate increased.

Tucker, Matthew T [Los Alamos National Laboratory; Horstemeyer, Mark F [MISSISSIPPI STATE UNIV; Whittington, Wilburn R [MISSISSIPPI STATE UNIV; Solanki, Kiran N [MISSISSIPPI STATE UNIV.

2010-11-19T23:59:59.000Z

8

Microstructural Characterization of 6061 Aluminum to 304L Stainless Steel Inertia Welds  

SciTech Connect (OSTI)

'Microstructural characterization of 6061-T6 aluminum-to-Type 304L stainless steel inertia welds provided a technical basis to conclude that transition joints fabricated from such welds should satisfactorily contain helium/hydrogen gas mixtures. This conclusion is based on the lack of semi-continuous alignments of particles and/or inclusions at, or near, the aluminum-to-stainless steel interface. These dissimilar metal transition joints play a key role in the operation of an accelerator driven, spallation neutron source designed for the production of tritium. The Accelerator Production of Tritium system will produce tritium through neutron interactions with 3He gas contained in water-cooled, 6061-T6 aluminum pressure tubes. Current design concepts include thousands of thin-walled pressure tubes distributed throughout a number of aluminum-clad, lead-filled, blanket modules. The aluminum pressure tubes are connected to a tritium extraction and purification system through a stainless steel manifold. The transition from aluminum to stainless steel is made via transition joints machined from the aluminum-to-stainless steel inertia welds. The paper describes the baseline microstructural characterization of the welds, including optical, scanning and transmission electron microscopy and uses that characterization to evaluate potential gas leakage across the weld.'

Dunn, K.A.

1999-09-29T23:59:59.000Z

9

A comparison of current work-hardening models used in the analysis of plastic deformations  

E-Print Network [OSTI]

stress-strain curve, 6061-T6 aluminum. 91 15 Uniaxial reversed loading of 6061-T6 aluminum, isotropic hardening 92 16 Uniaxial reversed loading of 6061-T6 aluminum, kinematic hardening 93 17 Uniaxial reversed loading of 6061-T6 aluminum, mechanical... sublayer model (4 sublayers) 94 viii LIST OF FIGURES (Continued) FIGURE PAGE 18 Uniaxial reversed loading of 6061-T6 aluminum, mechanical sublayer model (2 sublayers) 95 19 Uniaxial reversed loading of 6061-T6 aluminum, Mroz model (4 work hardening...

Vaughn, David Kenneth

1973-01-01T23:59:59.000Z

10

Wet-sand impulse loading of metallic plates and corrugated core sandwich panels J.J. Rimoli a  

E-Print Network [OSTI]

. A porthole extrusion process followed by friction stir welding was utilized to fabricate 6061-T6 aluminum

Wadley, Haydn

11

E-Print Network 3.0 - aa6061-t6 por arco Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(por grafo no dirigido) y DIGRAFO... (por grafo dirigido). Se desea que implemente el TAD GRAFO utilizando Lista de Adyacencias. Estos TADs... estructura de datos para almacenar...

12

al-6061-t6 gma welds: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

phased arrays is inspection speed: linear travel speeds of up to 100 mmsec are possible. Sizing is typically performed using diffraction approaches (TOFD and back diffraction),...

13

Compressive strength, plastic flow properties, and surface frictional effects of 1100, 3003 and 6061 aluminum alloys  

SciTech Connect (OSTI)

The purpose of this study is to find aluminum alloys that are effective for use as wire vacuum seals in the 800MeV particle accelerator located at the Louis Anderson Meson Physics Facility (LAMPF) in Los Alamos, NM. Three alloys, Al 1100, Al 3003, and Al 6061, are investigated under uniaxial compression to determine stresses for a given height reduction from 0 to 70 percent, and to find plastic flow and surface interaction effects. Right-circular cylindrical specimens are compressed on-end (cylindrically) and radially (for modeling as compressed wire). Aluminum 1100 and 3003 alloys are compared for length to diameter ratios of 1 and 2 for both compression types, and are then compared to results of radial compression of annealed small diameter Al 1100 wire currently used at LAMPE. The specimens are also compressed between three different platen surfaces, polished steel, etched steel, and aluminum 6061-T6, to determine effects of friction. The Al 3003 alloy exhibits 20 to 25% lower stresses at all height reductions than Al 1100 for both cylindrical and radial compression.

Pinkerton, G.W.

1993-12-31T23:59:59.000Z

14

Inertia-friction welding of particulate-reinforced aluminum matrix composites  

SciTech Connect (OSTI)

Aluminum metal-matrix composites (Al-MMC) are rapidly becoming materials of choice for many aerospace, automotive, recreational sports, and microelectronic applications. The attractive features of these materials include high specific strength and stiffness, a low coefficient of thermal expansion and enhanced wear characteristics relative to monolithic aluminum alloys. The effective engineering application of Al-MMC will commonly require their joining beth to themselves, to dissimilar Al-MMC, and to monolithic aluminum alloys. In the present work, dissimilar-alloy inertia-friction welds were produced between a 6061-T6 Al-MMC tube reinforced with l0 v/o Al{sub x}O{sub 3} particles (W6A.l0A-T6) and a modified A356 case MMC bar reinforced with 20 v/o SiC particles (F3S.20S), or a monolithic 6061-T6511 aluminum alloy bar. In Phase I, a fractional-factorial test matrix was statistically designed and performed to evaluate the effects of flywheel speed and axial pressure on the weld integrity, microstructure, hardness, tensile and torsion strengths and fracture behavior. In Phase 2, the effects of pre-weld machining of the solid bar on weld alignment and mechanical properties were evaluated. inertia-friction welding was shown to be effective for the joining of alumina particulate-reinforced composites to monolithic aluminum and to SiC-particulate reinforced aluminum. High-integrity joints exhibiting a defect-free joint interface with varying degrees of base alloy intermixing were produced at optimum parameter settings. Tensile and torsional strength joint efficiencies for the alumina-particulate MMC to monolithic aluminum alloy welds exceeded 80% and 75%, respectively, with tensile strength maximized with high axial pressure and flywheel speed, and torsional strength maximized at both medium and high levels of flywheel speed and axial pressure.

Cola, M.J.; Baeslack, W.A. III; Kou, M.

1994-12-31T23:59:59.000Z

15

The measurement of non-linear damping in metal-matrix composites  

E-Print Network [OSTI]

6061-T6 aluminum beam; f = 85 Hz; 40 & e, ?& 350 its Figure 2b: Typical free decay curve for a Plexiglas beam; f = 57 Hz; 5 & e?& 50 its . . . . 10 Figure 2c: One "block" of free decay data for a 6061-T6 aluminum beam; comparison... the entire decay data (f = 22, 38 Hz, ey 40 its ). . . . . . . . . 15 Page Figure 3b: Etfect of reducing N, the number of cycles/ block, to determine the strain-dependent damping of a 6061-T6 aluminum beam in free decay; comParison with q'rrtre ( f = 22...

Ray, Sourav

1994-01-01T23:59:59.000Z

16

Microdrilling of Biocompatible Materials  

E-Print Network [OSTI]

This research studies microdrilling of biocompatible materials including commercially pure titanium, 316L stainless steel, polyether ether ketone (PEEK) and aluminum 6061-T6. A microdrilling technique that uses progressive pecking and micromist...

Mohanty, Sankalp

2012-02-14T23:59:59.000Z

17

E-Print Network 3.0 - aluminum plate spent Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Diode Laser 77 Top View Side View Aluminum damping plate Aluminum base plate Thermoelectric cooler... was attached to an ... Source: Steck, Daniel A. - Oregon Center for...

18

ITP Aluminum: Aluminum Industry Vision: Sustainable Solutions...  

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

Aluminum Industry Vision: Sustainable Solutions for a Dynamic World ITP Aluminum: Aluminum Industry Vision: Sustainable Solutions for a Dynamic World alumvision.pdf More Documents...

19

UNH Precision Racing -Formula SAE Team 2009 -Car #86  

E-Print Network [OSTI]

event sponsored by the Society of Automotive Engineers where students from all around the world work such as aesthetics, comfort and use of common parts. 2009 Design Specifications: Suspension: 6061-T6 Aluminum yield which uses worm gears to transfer power to the wheels. An aluminum housing was machined to hold the diff

New Hampshire, University of

20

Velocity profiles for direct drive experiments. Time has been shifted to better display results. Inset: a comparison of fracture signals in the  

E-Print Network [OSTI]

in aluminum alloys at short time scales (~10-8 s) · Compare tensile fracture characteristics of 6061-T6 and 1100-H14 Al alloys Conclusions · Tensile fracture was observed at short time scales (~10-8 s) in both display results. Laser-Shock Induced Tensile Fracture in Aluminum I: Free-Surface Measurements Institute

Collins, Gary S.

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Laser Welding of Aluminum and Aluminum Alloys  

E-Print Network [OSTI]

.. ) Laser Welding of Aluminum and Aluminum Alloys Welds made with sharp bevel-groove weld aluminum and by aluminum alloy 5456 have been studied. The results indicate that initial absorption varies of the most dramatic illustrations of the differences in beam characteristics occurs when welding aluminum

Eagar, Thomas W.

22

Preliminary Investigation of Zircaloy-4 as a Research Reactor Cladding Material  

SciTech Connect (OSTI)

As part of a scoping study for the ATR fuel conversion project, an initial comparison of the material properties of Zircaloy-4 and Aluminum-6061 (T6 and O-temper) is performed to provide a preliminary evaluation of Zircaloy-4 for possible inclusion as a candidate cladding material for ATR fuel elements. The current fuel design for the ATR uses Aluminum 6061 (T6 and O temper) as a cladding and structural material in the fuel element and to date, no fuel failures have been reported. Based on this successful and longstanding operating history, Zircaloy-4 properties will be evaluated against the material properties for aluminum-6061. The preliminary investigation will focus on a comparison of density, oxidation rates, water chemistry requirements, mechanical properties, thermal properties, and neutronic properties.

Brian K Castle

2012-05-01T23:59:59.000Z

23

Aluminum powder metallurgy processing  

SciTech Connect (OSTI)

The objective of this dissertation is to explore the hypothesis that there is a strong linkage between gas atomization processing conditions, as-atomized aluminum powder characteristics, and the consolidation methodology required to make components from aluminum powder. The hypothesis was tested with pure aluminum powders produced by commercial air atomization, commercial inert gas atomization, and gas atomization reaction synthesis (GARS). A comparison of the GARS aluminum powders with the commercial aluminum powders showed the former to exhibit superior powder characteristics. The powders were compared in terms of size and shape, bulk chemistry, surface oxide chemistry and structure, and oxide film thickness. Minimum explosive concentration measurements assessed the dependence of explosibility hazard on surface area, oxide film thickness, and gas atomization processing conditions. The GARS aluminum powders were exposed to different relative humidity levels, demonstrating the effect of atmospheric conditions on post-atomization processing conditions. The GARS aluminum powders were exposed to different relative humidity levels, demonstrating the effect of atmospheric conditions on post-atomization oxidation of aluminum powder. An Al-Ti-Y GARS alloy exposed in ambient air at different temperatures revealed the effect of reactive alloy elements on post-atomization powder oxidation. The pure aluminum powders were consolidated by two different routes, a conventional consolidation process for fabricating aerospace components with aluminum powder and a proposed alternative. The consolidation procedures were compared by evaluating the consolidated microstructures and the corresponding mechanical properties. A low temperature solid state sintering experiment demonstrated that tap densified GARS aluminum powders can form sintering necks between contacting powder particles, unlike the total resistance to sintering of commercial air atomization aluminum powder.

Flumerfelt, J.F.

1999-02-12T23:59:59.000Z

24

Carbothermic Aluminum Production Using Scrap Aluminum As A Coolant  

DOE Patents [OSTI]

A process for producing aluminum metal by carbothermic reduction of alumina ore. Alumina ore is heated in the presence of carbon at an elevated temperature to produce an aluminum metal body contaminated with about 10-30% by wt. aluminum carbide. Aluminum metal or aluminum alloy scrap then is added to bring the temperature to about 900-1000.degree. C. and precipitate out aluminum carbide. The precipitated aluminum carbide is filtered, decanted, or fluxed with salt to form a molten body having reduced aluminum carbide content.

LaCamera, Alfred F. (Trafford, PA)

2002-11-05T23:59:59.000Z

25

Aluminum-Catalyzed Intramolecular Hydroamination of Aminoalkenes  

E-Print Network [OSTI]

Aluminum-catalyzed intramolecular hydroamination ofgroup 13 metals such as aluminum are exceedingly inexpensive

Koller, Juergen

2011-01-01T23:59:59.000Z

26

Electron Positron Proton Spectrometer for use at Laboratory for Laser Energetics  

SciTech Connect (OSTI)

The Electron Positron Proton Spectrometer (EPPS) is mounted in a TIM (Ten-Inch Manipulator) system on the Omega-60 or Omega-EP laser facilities at the University of Rochester, Laboratory for Laser Energetics (LLE), when in use, see Fig. 1. The Spectrometer assembly, shown in Fig. 2, is constructed of a steel box containing magnets, surrounded by Lead 6% Antimony shielding with SS threaded insert, sitting on an Aluminum 6061-T6 plate.

Ayers, S L

2010-04-07T23:59:59.000Z

27

Aluminum monocarbonyl and aluminum isocarbonyl Steve S. Wesolowski,a)  

E-Print Network [OSTI]

Aluminum monocarbonyl and aluminum isocarbonyl Steve S. Wesolowski,a) T. Daniel Crawford,b) Justin of the aluminum monocarbonyl species AlCO and AlOC have been performed to predict the geometries, fragmentation, Ogden, and Oswald6 first isolated aluminum dicarbonyls in solid krypton and identified the species

Crawford, T. Daniel

28

DEFLECTION MEASUREMENTS OF 25 mm ALUMINUM COLLARS  

E-Print Network [OSTI]

MEASUREMENTS OF 25 mm ALUMINUM COLLARS C. Peters LawrenceMEASUREMENTS OF 25 mm ALUMINUM COLLARS" C. Peters Lawrenceinch thick 7075- T6 aluminum alloy plate. Inside corners

Peters, C.

2010-01-01T23:59:59.000Z

29

ALUMINUM AND CHROMIUM LEACHING WORKSHOP WHITEPAPER  

SciTech Connect (OSTI)

A workshop was held on January 23-24, 2007 to discuss the status of processes to leach constituents from High Level Waste (HLW) sludges at the Hanford and Savannah River Sites. The objective of the workshop was to examine the needs and requirements for the HLW flowsheet for each site, discuss the status of knowledge of the leaching processes, communicate the research plans, and identify opportunities for synergy to address knowledge gaps. The purpose of leaching of non-radioactive constituents from the sludge waste is to reduce the burden of material that must be vitrified in the HLW melter systems, resulting in reduced HLW glass waste volume, reduced disposal costs, shorter process schedules, and higher facility throughput rates. The leaching process is estimated to reduce the operating life cycle of SRS by seven years and decrease the number of HLW canisters to be disposed in the Repository by 1000 [Gillam et al., 2006]. Comparably at Hanford, the aluminum and chromium leaching processes are estimated to reduce the operating life cycle of the Waste Treatment Plant by 20 years and decrease the number of canisters to the Repository by 15,000-30,000 [Gilbert, 2007]. These leaching processes will save the Department of Energy (DOE) billions of dollars in clean up and disposal costs. The primary constituents targeted for removal by leaching are aluminum and chromium. It is desirable to have some aluminum in glass to improve its durability; however, too much aluminum can increase the sludge viscosity, glass viscosity, and reduce overall process throughput. Chromium leaching is necessary to prevent formation of crystalline compounds in the glass, but is only needed at Hanford because of differences in the sludge waste chemistry at the two sites. Improving glass formulations to increase tolerance of aluminum and chromium is another approach to decrease HLW glass volume. It is likely that an optimum condition can be found by both performing leaching and improving formulations. Disposal of the resulting aluminum and chromium-rich streams are different at the two sites, with vitrification into Low Activity Waste (LAW) glass at Hanford, and solidification in Saltstone at SRS. Prior to disposal, the leachate solutions must be treated to remove radionuclides, resulting in increased operating costs and extended facility processing schedules. Interim storage of leachate can also add costs and delay tank closure. Recent projections at Hanford indicate that up to 40,000 metric tons of sodium would be needed to dissolve the aluminum and maintain it in solution, which nearly doubles the amount of sodium in the entire current waste tank inventory. This underscores the dramatic impact that the aluminum leaching can have on the entire system. A comprehensive view of leaching and the downstream impacts must therefore be considered prior to implementation. Many laboratory scale tests for aluminum and chromium dissolution have been run on Hanford wastes, with samples from 46 tanks tested. Three samples from SRS tanks have been tested, out of seven tanks containing high aluminum sludge. One full-scale aluminum dissolution was successfully performed on waste at SRS in 1982, but generated a very large quantity of liquid waste ({approx}3,000,000 gallons). No large-scale tests have been done on Hanford wastes. Although the data to date give a generally positive indication that aluminum dissolution will work, many issues remain, predominantly because of variable waste compositions and changes in process conditions, downstream processing, or storage limitations. Better approaches are needed to deal with the waste volumes and limitations on disposal methods. To develop a better approach requires a more extensive understanding of the kinetics of dissolution, as well as the factors that effect rates, effectiveness, and secondary species. Models of the dissolution rate that have been developed are useful, but suffer from limitations on applicable compositional ranges, mineral phases, and particle properties that are difficult to measure. The experimental

McCabe, D; Jeff Pike, J; Bill Wilmarth, B

2007-04-25T23:59:59.000Z

30

Regeneration of aluminum hydride  

DOE Patents [OSTI]

The present invention provides methods and materials for the formation of hydrogen storage alanes, AlH.sub.x, where x is greater than 0 and less than or equal to 6 at reduced H.sub.2 pressures and temperatures. The methods rely upon reduction of the change in free energy of the reaction between aluminum and molecular H.sub.2. The change in free energy is reduced by lowering the entropy change during the reaction by providing aluminum in a state of high entropy, and by increasing the magnitude of the change in enthalpy of the reaction or combinations thereof.

Graetz, Jason Allan; Reilly, James J; Wegrzyn, James E

2012-09-18T23:59:59.000Z

31

Regeneration of aluminum hydride  

DOE Patents [OSTI]

The present invention provides methods and materials for the formation of hydrogen storage alanes, AlH.sub.x, where x is greater than 0 and less than or equal to 6 at reduced H.sub.2 pressures and temperatures. The methods rely upon reduction of the change in free energy of the reaction between aluminum and molecular H.sub.2. The change in free energy is reduced by lowering the entropy change during the reaction by providing aluminum in a state of high entropy, by increasing the magnitude of the change in enthalpy of the reaction or combinations thereof.

Graetz, Jason Allan (Mastic, NY); Reilly, James J. (Bellport, NY)

2009-04-21T23:59:59.000Z

32

Aluminum battery alloys  

DOE Patents [OSTI]

Aluminum alloys suitable for use as anode structures in electrochemical cells are disclosed. These alloys include iron levels higher than previously felt possible, due to the presence of controlled amounts of manganese, with possible additions of magnesium and controlled amounts of gallium.

Thompson, D.S.; Scott, D.H.

1984-09-28T23:59:59.000Z

33

Aluminum battery alloys  

DOE Patents [OSTI]

Aluminum alloys suitable for use as anode structures in electrochemical cs are disclosed. These alloys include iron levels higher than previously felt possible, due to the presence of controlled amounts of manganese, with possible additions of magnesium and controlled amounts of gallium.

Thompson, David S. (Richmond, VA); Scott, Darwin H. (Mechanicsville, VA)

1985-01-01T23:59:59.000Z

34

Differences of growth response to aluminum excess of two Melaleuca trees differing in aluminum resistance  

E-Print Network [OSTI]

M, Yamanoshita T, Kojima K. , Role of aluminum-bindingligands in aluminum resistance of Eucalyptus camaldulensissoils, low pH and excess aluminum are the primary factors

Houman, Yoshifumi; Tahara, Ko; Shinmachi, Fumie; Noguchi, Akira; Satohiko, Sasaki; Hasegawa, Isao

2009-01-01T23:59:59.000Z

35

aluminum matrix composites: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

... ...... ..... ... . . 3 Conventional Aluminum Brazing ... 4 Aluminum Composite Joining ... 5 Aluminum Joining by Unconventional Methods Eagar, Thomas W. 2...

36

The young's modulus of 1018 steel and 67061-T6 aluminum measured from quasi-static to elastic precursor strain-rates  

SciTech Connect (OSTI)

The assumption that Young's modulus is strain-rate invariant is tested for 6061-T6 aluminium alloy and 1018 steel over 10 decades of strain-rate. For the same billets of material, 3 quasi-static strain-rates are investigated with foil strain gauges at room temperature. The ultrasonic sound speeds are measured and used to calculate the moduli at approximately 10{sup 4} s{sup -1}. Finally, ID plate impact is used to generate an elastic pre-cursor in the alloys at a strain-rate of approximately 10{sup 6} s{sup -1} from which the longitudinal sound speed may be obtained. It is found that indeed the Young's modulus is strain-rate independent within the experimental accuracy.

Rae, Philip J [Los Alamos National Laboratory; Trujillo, Carl [Los Alamos National Laboratory; Lovato, Manuel [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

37

ITP Aluminum: Energy and Environmental Profile of the U.S. Aluminum...  

Broader source: Energy.gov (indexed) [DOE]

Energy and Environmental Profile of the U.S. Aluminum Industry ITP Aluminum: Energy and Environmental Profile of the U.S. Aluminum Industry aluminum.pdf More Documents &...

38

Aluminum Carbothermic Technology  

SciTech Connect (OSTI)

This report documents the non-proprietary research and development conducted on the Aluminum Carbothermic Technology (ACT) project from contract inception on July 01, 2000 to termination on December 31, 2004. The objectives of the program were to demonstrate the technical and economic feasibility of a new carbothermic process for producing commercial grade aluminum, designated as the ''Advanced Reactor Process'' (ARP). The scope of the program ranged from fundamental research through small scale laboratory experiments (65 kW power input) to larger scale test modules at up to 1600 kW power input. The tasks included work on four components of the process, Stages 1 and 2 of the reactor, vapor recovery and metal alloy decarbonization; development of computer models; and economic analyses of capital and operating costs. Justification for developing a new, carbothermic route to aluminum production is defined by the potential benefits in reduced energy, lower costs and more favorable environmental characteristics than the conventional Hall-Heroult process presently used by the industry. The estimated metrics for these advantages include energy rates at approximately 10 kWh/kg Al (versus over 13 kWh/kg Al for Hall-Heroult), capital costs as low as $1250 per MTY (versus 4,000 per MTY for Hall-Heroult), operating cost reductions of over 10%, and up to 37% reduction in CO2 emissions for fossil-fuel power plants. Realization of these benefits would be critical to sustaining the US aluminum industries position as a global leader in primary aluminum production. One very attractive incentive for ARP is its perceived ability to cost effectively produce metal over a range of smelter sizes, not feasible for Hall-Heroult plants which must be large, 240,000 TPY or more, to be economical. Lower capacity stand alone carbothermic smelters could be utilized to supply molten metal at fabrication facilities similar to the mini-mill concept employed by the steel industry. Major accomplishments for the program include definition of the system thermo-chemistry, demonstration of reactor stage 1, development of reactor stage 2 critical components in a 500 kW module, experimental determination of the vapor recovery reactor fundamentals, detailed design and installation of an advanced stage 1/vapor recovery reactor, feasibility of efficient separation of Al-C metal alloy product, updated capital and operating cost estimates, and development of computer models for all steps of the Advanced Reactor Process.

Bruno, Marshall J.

2005-03-31T23:59:59.000Z

39

Possible Reasons Why Aluminum is a Beneficial Element for Melastoma malabathricum, an Aluminum Accumulator  

E-Print Network [OSTI]

of adaptation to high aluminum condition in native plantit has been well known that aluminum (Al) toxicity restricts

Watanabe, Toshihiro; Osaki, Mitsuru

2009-01-01T23:59:59.000Z

40

Modeling Texture Evolution during Recrystallization in Aluminum  

E-Print Network [OSTI]

Modeling Texture Evolution during Recrystallization in Aluminum Abhijit Brahme1,2 , Joseph Fridy3, Aluminum, Grain Boundary Mobility, Nucleation, Oriented Growth, Oriented Nucleation, Stored Energy, Monte Carlo Modeling. #12;Modeling Texture Evolution during Recrystallization in Aluminum 2 1. Introduction

Rollett, Anthony D.

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Overview of Aluminum  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSales LLCDiesel Enginesthewith RationalActivity|Aluminum Overview

42

Selective Adsorption of Sodium Aluminum Fluoride Salts from Molten Aluminum  

SciTech Connect (OSTI)

Aluminum is produced in electrolytic reduction cells where alumina feedstock is dissolved in molten cryolite (sodium aluminum fluoride) along with aluminum and calcium fluorides. The dissolved alumina is then reduced by electrolysis and the molten aluminum separates to the bottom of the cell. The reduction cell is periodically tapped to remove the molten aluminum. During the tapping process, some of the molten electrolyte (commonly referred as bath in the aluminum industry) is carried over with the molten aluminum and into the transfer crucible. The carryover of molten bath into the holding furnace can create significant operational problems in aluminum cast houses. Bath carryover can result in several problems. The most troublesome problem is sodium and calcium pickup in magnesium-bearing alloys. Magnesium alloying additions can result in Mg-Na and Mg-Ca exchange reactions with the molten bath, which results in the undesirable pickup of elemental sodium and calcium. This final report presents the findings of a project to evaluate removal of molten bath using a new and novel micro-porous filter media. The theory of selective adsorption or removal is based on interfacial surface energy differences of molten aluminum and bath on the micro-porous filter structure. This report describes the theory of the selective adsorption-filtration process, the development of suitable micro-porous filter media, and the operational results obtained with a micro-porous bed filtration system. The micro-porous filter media was found to very effectively remove molten sodium aluminum fluoride bath by the selective adsorption-filtration mechanism.

Leonard S. Aubrey; Christine A. Boyle; Eddie M. Williams; David H. DeYoung; Dawid D. Smith; Feng Chi

2007-08-16T23:59:59.000Z

43

Aluminum Zintl anion moieties within sodium aluminum clusters  

SciTech Connect (OSTI)

Through a synergetic combination of anion photoelectron spectroscopy and density functional theory based calculations, we have established that aluminum moieties within selected sodium-aluminum clusters are Zintl anions. Sodiumaluminum cluster anions, Na{sub m}Al{sub n}{sup ?}, were generated in a pulsed arc discharge source. After mass selection, their photoelectron spectra were measured by a magnetic bottle, electron energy analyzer. Calculations on a select sub-set of stoichiometries provided geometric structures and full charge analyses for both cluster anions and their neutral cluster counterparts, as well as photodetachment transition energies (stick spectra), and fragment molecular orbital based correlation diagrams.

Wang, Haopeng; Zhang, Xinxing; Ko, Yeon Jae; Grubisic, Andrej; Li, Xiang; Gantefr, Gerd; Bowen, Kit H., E-mail: AKandalam@wcupa.edu, E-mail: kiran@mcneese.edu, E-mail: kbowen@jhu.edu [Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States); Schnckel, Hansgeorg [Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany)] [Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany); Eichhorn, Bryan W. [Department of Chemistry, University of Maryland at College Park, College Park, Maryland 20742 (United States)] [Department of Chemistry, University of Maryland at College Park, College Park, Maryland 20742 (United States); Lee, Mal-Soon; Jena, P. [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States)] [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States); Kandalam, Anil K., E-mail: AKandalam@wcupa.edu, E-mail: kiran@mcneese.edu, E-mail: kbowen@jhu.edu [Department of Physics, West Chester University of Pennsylvania, West Chester, Pennsylvania 19383 (United States); Kiran, Boggavarapu, E-mail: AKandalam@wcupa.edu, E-mail: kiran@mcneese.edu, E-mail: kbowen@jhu.edu [Department of Chemistry, McNeese State University, Lake Charles, Louisiana 70609 (United States)] [Department of Chemistry, McNeese State University, Lake Charles, Louisiana 70609 (United States)

2014-02-07T23:59:59.000Z

44

Spray Rolling Aluminum Strip  

SciTech Connect (OSTI)

Spray forming is a competitive low-cost alternative to ingot metallurgy for manufacturing ferrous and non-ferrous alloy shapes. It produces materials with a reduced number of processing steps, while maintaining materials properties, with the possibility of near-net-shape manufacturing. However, there are several hurdles to large-scale commercial adoption of spray forming: 1) ensuring strip is consistently flat, 2) eliminating porosity, particularly at the deposit/substrate interface, and 3) improving material yield. Through this program, a new strip/sheet casting process, termed spray rolling, has been developed, which is an innovative manufacturing technique to produce aluminum net-shape products. Spray rolling combines the benefits of twin-roll casting and conventional spray forming, showing a promising potential to overcome the above hurdles associated with spray forming. Spray rolling requires less energy and generates less scrap than conventional processes and, consequently, enables the development of materials with lower environmental impacts in both processing and final products. Spray Rolling was developed as a collaborative project between the University of California-Davis, the Colorado School of Mines, the Idaho National Engineering and Environmental Laboratory, and an industry team. The following objectives of this project were achieved: (1) Demonstration of the feasibility of the spray rolling process at the bench-scale level and evaluation of the materials properties of spray rolled aluminum strip alloys; and (2) Demonstration of 2X scalability of the process and documentation of technical hurdles to further scale up and initiate technology transfer to industry for eventual commercialization of the process.

Lavernia, E.J.; Delplanque, J-P; McHugh, K.M.

2006-05-10T23:59:59.000Z

45

Thermal coatings for titanium-aluminum alloys  

SciTech Connect (OSTI)

Titanium aluminides and titanium alloys are candidate materials for use in hot structure and heat-shield components of hypersonic vehicles because of their good strength-to-weight characteristics at elevated temperature. However, in order to utilize their maximum temperature capability, they must be coated to resist oxidation and to have a high total remittance. Also, surface catalysis for recombination of dissociated species in the aerodynamic boundary layer must be minimized. Very thin chemical vapor deposition (CVD) coatings are attractive candidates for this application because of durability and very light weight. To demonstrate this concept, coatings of boron-silicon and aluminum-boron-silicon compositions were applied to the titanium-aluminides alpha2 (Ti-14Al-21Nb), super-alpha2 (Ti-14Al-23-Nb-2V), and gamma (Ti-33Al-6Nb-1Ta) and to the titanium alloy beta-21S (Ti-15Mo-3Al-3Nb-0.2Si). Coated specimens of each alloy were subjected to a set of simulated hypersonic vehicle environmental tests to determine their properties of oxidation resistance, surface catalysis, radiative emittance, and thermal shock resistance. Surface catalysis results should be viewed as relative performance only of the several coating-alloy combinations tested under the specific environmental conditions of the LaRC Hypersonic Materials Environmental Test System (HYMETS) arc-plasma-heated hypersonic wind tunnel. Tests were also conducted to evaluate the hydrogen transport properties of the coatings and any effects of the coating processing itself on fatigue life of the base alloys. Results are presented for three types of coatings, which are as follows: (1) a single layer boron silicon coating, (2) a single layer aluminum-boron-silicon coating, and (3) a multilayer coating consisting of an aluminum-boron-silicon sublayer with a boron-silicon outer layer.

Cunnington, G.R.; Clark, R.K.; Robinson, J.C.

1993-04-01T23:59:59.000Z

46

EUROSPF Conference APPLICATION TECHNOLOGY OF ALUMINUM BLOW  

E-Print Network [OSTI]

6th EUROSPF Conference APPLICATION TECHNOLOGY OF ALUMINUM BLOW FORMING FOR AUTOMOTIVE CLOSURE PANEL Replacement by aluminum for the closure panels is one of the common methods for lightening car body. However. As a solution to cover the low stamping formability of aluminum, Blow forming technology of aluminum which

Paris-Sud XI, Université de

47

Electrolyte treatment for aluminum reduction  

DOE Patents [OSTI]

A method of treating an electrolyte for use in the electrolytic reduction of alumina to aluminum employing an anode and a cathode, the alumina dissolved in the electrolyte, the treating improving wetting of the cathode with molten aluminum during electrolysis. The method comprises the steps of providing a molten electrolyte comprised of ALF.sub.3 and at least one salt selected from the group consisting of NaF, KF and LiF, and treating the electrolyte by providing therein 0.004 to 0.2 wt. % of a transition metal or transition metal compound for improved wettability of the cathode with molten aluminum during subsequent electrolysis to reduce alumina to aluminum.

Brown, Craig W. (Seattle, WA); Brooks, Richard J. (Seattle, WA); Frizzle, Patrick B. (Seattle, WA); Juric, Drago D. (Bulleen, AU)

2002-01-01T23:59:59.000Z

48

aluminum alloy produced: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for silicon metal comes primarily from the aluminum and chemical industries. Domestic secondary aluminum production--the primary materials source for aluminum-silicon alloys--was...

49

Aluminum across the Americas: Caribbean Mobilities and Transnational American Studies  

E-Print Network [OSTI]

E. Jamaica in the World Aluminum Industry, 18381973, Vol.2007. Doordan, Dennis. Promoting Aluminum: Designers andthe American Aluminum Industry. Design Issues 9, no. 2 (

Sheller, Mimi

2013-01-01T23:59:59.000Z

50

Aluminum-detoxifying compounds in roots of Eucalyptus camaldulensis  

E-Print Network [OSTI]

M, Yamanoshita T, Kojima K, Role of aluminum-bindingligands in aluminum resistance of Eucalyptus camaldulensisH, Sasaki S, Kojima K. Aluminum distribution and reactive

Tahara, Ko; Hashida, Koh; Ohara, Seiji; Kojima, Katsumi; Shinohara, Kenji

2009-01-01T23:59:59.000Z

51

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy...  

Broader source: Energy.gov (indexed) [DOE]

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy Assessments at Two Aluminum Sheet Production Operations Commonwealth Aluminum: Manufacturer Conducts Plant-Wide...

52

Scaleable Clean Aluminum Melting Systems  

SciTech Connect (OSTI)

The project entitled 'Scaleable Clean Aluminum Melting Systems' was a Cooperative Research and Development Agreements (CRADAs) between Oak Ridge National Laboratory (ORNL) and Secat Inc. The three-year project was initially funded for the first year and was then canceled due to funding cuts at the DOE headquarters. The limited funds allowed the research team to visit industrial sites and investigate the status of using immersion heaters for aluminum melting applications. Primary concepts were proposed on the design of furnaces using immersion heaters for melting. The proposed project can continue if the funding agency resumes the funds to this research. The objective of this project was to develop and demonstrate integrated, retrofitable technologies for clean melting systems for aluminum in both the Metal Casting and integrated aluminum processing industries. The scope focused on immersion heating coupled with metal circulation systems that provide significant opportunity for energy savings as well as reduction of melt loss in the form of dross. The project aimed at the development and integration of technologies that would enable significant reduction in the energy consumption and environmental impacts of melting aluminum through substitution of immersion heating for the conventional radiant burner methods used in reverberatory furnaces. Specifically, the program would couple heater improvements with furnace modeling that would enable cost-effective retrofits to a range of existing furnace sizes, reducing the economic barrier to application.

Han, Q.; Das, S.K. (Secat, Inc.)

2008-02-15T23:59:59.000Z

53

Joining of 6061 Aluminum Matrix-Ceramic Particle Reinforced Composites  

E-Print Network [OSTI]

) ) Joining of 6061 Aluminum Matrix-Ceramic Particle Reinforced Composites by R. Kiehn and T. W................... .. ....... ... ... 3 Literature Review ......... ...... ..... ... . . 3 Conventional Aluminum Brazing ........ 4 Aluminum Composite Joining ........... 5 Aluminum Joining by Unconventional Methods

Eagar, Thomas W.

54

Electrolytic Cell For Production Of Aluminum From Alumina  

DOE Patents [OSTI]

An electrolytic cell for producing aluminum from alumina having a reservoir for collecting molten aluminum remote from the electrolysis.

Bradford, Donald R (Underwood, WA); Barnett, Robert J. (Goldendale, WA); Mezner, Michael B. (Sandy, OR)

2004-11-02T23:59:59.000Z

55

Current technologies and trends of aluminum design  

E-Print Network [OSTI]

A literature review of current aluminum technology in the building and construction industry was carried out. Aluminum is an ideal material for building in corrosive environments and for building structures where small ...

Chen, Michael, 1981-

2004-01-01T23:59:59.000Z

56

Micro Joining of Aluminum Graphite Composites  

E-Print Network [OSTI]

Advanced aluminum graphite composites have unique thermal properties due to opposing coefficients of thermal expansion of aluminum and graphite. The thermal and mechanical properties of such composites are anisotropic due to directional properties...

Velamati, Manasa

2012-07-16T23:59:59.000Z

57

Aluminum-carbon composite electrode  

DOE Patents [OSTI]

A high performance double layer capacitor having an electric double layer formed in the interface between activated carbon and an electrolyte is disclosed. The high performance double layer capacitor includes a pair of aluminum impregnated carbon composite electrodes having an evenly distributed and continuous path of aluminum impregnated within an activated carbon fiber preform saturated with a high performance electrolytic solution. The high performance double layer capacitor is capable of delivering at least 5 Wh/kg of useful energy at power ratings of at least 600 W/kg. 3 figs.

Farahmandi, C.J.; Dispennette, J.M.

1998-07-07T23:59:59.000Z

58

Aluminum-carbon composite electrode  

DOE Patents [OSTI]

A high performance double layer capacitor having an electric double layer formed in the interface between activated carbon and an electrolyte is disclosed. The high performance double layer capacitor includes a pair of aluminum impregnated carbon composite electrodes having an evenly distributed and continuous path of aluminum impregnated within an activated carbon fiber preform saturated with a high performance electrolytic solution. The high performance double layer capacitor is capable of delivering at least 5 Wh/kg of useful energy at power ratings of at least 600 W/kg.

Farahmandi, C. Joseph (Auburn, AL); Dispennette, John M. (Auburn, AL)

1998-07-07T23:59:59.000Z

59

Nanotube Fabrication byNanotube Fabrication by Anodic Aluminum Oxide,Anodic Aluminum Oxide,  

E-Print Network [OSTI]

Nanotube Fabrication byNanotube Fabrication by Anodic Aluminum Oxide,Anodic Aluminum Oxide, Self-regulating phenomena in materials science: Self-assembly of nanopores during anodic oxidation of aluminum (AAO) Self combined anodic aluminum oxide (AAO) nanostructures with atomic layer deposition (ALD) to fabricate

Rubloff, Gary W.

60

Aluminum in Superconducting Magnets Robert J. Weggel  

E-Print Network [OSTI]

Aluminum in Superconducting Magnets Robert J. Weggel Magnet Optimization Research Engineering is aluminum, either ultrapure, as quenchstabilization matrix metal, and/or alloyed and coldworked and heat for magnets in which the stresses and strains are modest. The strongest aluminum alloy commercially available

McDonald, Kirk

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Aluminum: Principled Scenario Exploration through Minimality  

E-Print Network [OSTI]

Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J. We present Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios

Dougherty, Daniel J.

62

Aluminum--2004 5. Areferencethatincludesasectionmark()isfoundintheinternet  

E-Print Network [OSTI]

Aluminum--2004 5. Areferencethatincludesasectionmark(§)isfoundintheinternet ReferenceCitedsection. Aluminum ByPatriciaA.Plunkert Domestic survey data and tables were prepared by Benjamin S. Goff.S.GeologicalSurvey(uSGS)requestforproductiondata. CommercialDevelopmentCo.(CDC)ofSt.louis,mO, boughtKaiserAluminumCorp.'s200,000-metric-ton-per-year (t

63

Aluminum: Principled Scenario Exploration through Minimality  

E-Print Network [OSTI]

Aluminum: Principled Scenario Exploration through Minimality Tim Nelson1, Salman Saghafi1, Daniel J Aluminum, a modification of Alloy that presents only minimal scenarios: those that contain no more than is necessary. Aluminum lets users explore the scenario space by adding to scenarios and backtracking. It also

Krishnamurthi, Shriram

64

MODELING OF ALUMINUM NANOPARTICLE FORMATION R. Schefflan  

E-Print Network [OSTI]

MODELING OF ALUMINUM NANOPARTICLE FORMATION R. Schefflan D. Kalyon S. Kovenklioglu Stevens Picatinny Arsenal's process for making alumina coated nanoparticles of aluminum involves the conversion of gaseous aluminum, in the presence of helium carrier gas, to solid nanoparticles and their subsequent

65

E-Print Network 3.0 - aluminum oxide selectively Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aluminum Plants Background... . "DSIs" is often used interchangeably with aluminum smelters because aluminum smelters ... Source: Northwest Power Planning Council...

66

Aluminum Waste Reaction Indicators in a Municipal Solid Waste Landfill  

E-Print Network [OSTI]

Aluminum Waste Reaction Indicators in a Municipal Solid Waste Landfill Timothy D. Stark, F.ASCE1 landfills may contain aluminum from residential and commercial solid waste, industrial waste, and aluminum pro- duction wastes. Some aluminum-bearing waste materials, particularly aluminum production wastes

67

Final Report on the Safety Assessment of Aluminum Silicate, Calcium Silicate, Magnesium Aluminum  

E-Print Network [OSTI]

Final Report on the Safety Assessment of Aluminum Silicate, Calcium Silicate, Magnesium Aluminum Silicate, Magnesium Silicate, Magnesium Trisilicate, Sodium Magnesium Silicate, Zirconium Silicate, Attapulgite, Bentonite, Fuller's Earth, Hectorite, Kaolin, Lithium Magnesium Silicate, Lithium Magnesium

Ahmad, Sajjad

68

Creep of pure aluminum at cryogenic temperatures  

E-Print Network [OSTI]

are capable of producing stea. dy-state fields greater than 15 Tesla while conventional magnets are only capable of about 3 Tesla, . The second advantage is that superconducting magnets create very homogeneous fields. This is particularly important..., the resistivity of 99. 99% pure aluminum is lower than that of oxygen free high conductivity (OFHC) copper. 2. As magnetic field increases above about 6 Tesla, , copper continues to increase in resistivity whereas aluminum becomes saturated, i. e. , aluminum...

McDonald, Lacy Clark

1989-01-01T23:59:59.000Z

69

High resistivity aluminum antimonide radiation detector  

DOE Patents [OSTI]

Bulk Aluminum Antimonide (AlSb)-based single crystal materials have been prepared for use as ambient (room) temperature X-ray and Gamma-ray radiation detection.

Sherohman, John W. (Livermore, CA); Coombs, III, Arthur W. (Patterson, CA); Yee, Jick H. (Livermore, CA)

2007-12-18T23:59:59.000Z

70

Nd:YAG laser welding aluminum alloys  

SciTech Connect (OSTI)

Autogenous Nd:YAG laser welding wrought 4047, 1100, 3003, 2219, 5052, 5086, 5456, and 6061 and cast A356 aluminum alloys to cast A356 aluminum alloy in restrained annular weld joints was investigated. The welds were 12.7 mm (0.375 in.) and 9.5 mm (0.375 in.) diameter with approximately 0.30 mm (0.012 in.) penetration. This investigation determined 4047 aluminum alloy to be the optimum alloy for autogenous Nd:YAG laser welding to cast A356 aluminum alloy. This report describes the investigation and its results.

Jimenez, E. Jr.

1992-02-01T23:59:59.000Z

71

iCons, 2011 Alzheimers and Aluminum: Lesson Plan  

E-Print Network [OSTI]

© iCons, 2011 Alzheimers and Aluminum: Lesson Plan Handouts to explore mechanistic link between Alzheimer's and aluminum 5. Brief proposal expanding Points to Aluminum's Link With Alzheimer's Disease" from 1989. Provide handout

Auerbach, Scott M.

72

Response of structural materials to radiation environments  

SciTech Connect (OSTI)

An evaluation of proton and neutron damage to aluminum, stainless steel, nickel alloys, and various aluminum alloys has been performed. The proton studies were conducted at energies of 200 MeV, 800 MeV, and 23.5 GeV. The proton studies consisted of evaluation and characterization of proton-irradiated window/target materials from accelerators and comparison to nonirradiated archival materials. The materials evaluated for the proton irradiations included 99.9999 wt% aluminum, 1100 aluminum, 5052 aluminum, 304 stainless steel, and inconel 718. The neutron damage research centered on 6061 T-6 aluminum which was obtained from a control-rod follower from the Brookhaven National Laboratory`s (BNL) High Flux Beam Reactor (HFBR). This material had received thermal neutron fluence up to {approximately}4 {times} 10{sup 23} n/cm{sup 2}. The possible effects of thermal-to-fast neutron flux ratios are discussed. The increases in tensile strength in the proton-irradiated materials is shown to be the result of atomic displacements. These displacements cause interstitials and vacancies which aggregate into defect clusters which result in radiation hardening of the materials. Production of gas (helium) in the grain boundaries of proton irradiated 99.9999 wt% aluminum is also discussed. The major factor contributing to the mechanical-property changes in the neutron-irradiated 6061 T-6 aluminum is the production of transmutation products formed by interactions of the aluminum with thermal neutrons. The metallurgical and mechanical-property evaluations for the research consisted of electron microscopy (both scanning and transmission), tensile testing, and microhardness testing.

Czajkowski, C.J.

1997-12-01T23:59:59.000Z

73

aluminum matrix composite: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Topic Index 1 Joining of 6061 Aluminum Matrix-Ceramic Particle Reinforced Composites Materials Science Websites Summary: ) ) Joining of 6061 Aluminum Matrix-Ceramic Particle...

74

aluminum oxide layer: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR CELLS Renewable Energy Websites Summary: ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE...

75

aluminum oleate layered: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR CELLS Renewable Energy Websites Summary: ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE...

76

aluminum oxide layers: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR CELLS Renewable Energy Websites Summary: ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE...

77

DOE - Office of Legacy Management -- Hunter Douglas Aluminum...  

Office of Legacy Management (LM)

Hunter Douglas Aluminum Plant Div of Bridgeport Brass Co - CA 11 FUSRAP Considered Sites Site: HUNTER DOUGLAS ALUMINUM PLANT, DIV. OF BRIDGEPORT BRASS CO. (CA.11 ) Eliminated from...

78

Aluminum across the Americas: Caribbean Mobilities and Transnational American Studies  

E-Print Network [OSTI]

developed countries aluminum smelters consume up to 1/3 ordam to power an aluminum smelter in the 1960s, displacing

Sheller, Mimi

2013-01-01T23:59:59.000Z

79

Magnesium Replacement of Aluminum Cast Components in a Production...  

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

Magnesium Replacement of Aluminum Cast Components in a Production V6 Engine to Effect Cost-Effective Mass Reduction Magnesium Replacement of Aluminum Cast Components in a...

80

ALUMINUM DISTRIBUTIONSIN THE EURASIAN BASIN OF THE ARCTIC OCEAN  

E-Print Network [OSTI]

ALUMINUM DISTRIBUTIONSIN THE EURASIAN BASIN OF THE ARCTIC OCEAN A THESISSUBMITTEDTO THE GRADUATE Section(1994)cruiseswere analyzed for their aluminum (Al) content; these two data setswere then combined

Luther, Douglas S.

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Aluminum industry energy conservation workshop V papers  

SciTech Connect (OSTI)

This book contains papers given at a recent meeting sponsored by The Aluminum Association. The focus of the meeting is on energy conservation in the aluminum industry. Topics include recovery of waste heat, more energy efficient design of plants, and government policies.

Not Available

1980-01-01T23:59:59.000Z

82

Aluminum low temperature smelting cell metal collection  

DOE Patents [OSTI]

A method of producing aluminum in an electrolytic cell containing alumina dissolved in an electrolyte. The method comprises the steps of providing a molten salt electrolyte in an electrolytic cell having an anodic liner for containing the electrolyte, the liner having an anodic bottom and walls including at least one end wall extending upwardly from the anodic bottom, the anodic liner being substantially inert with respect to the molten electrolyte. A plurality of non-consumable anodes is provided and disposed vertically in the electrolyte. A plurality of cathodes is disposed vertically in the electrolyte in alternating relationship with the anodes. The anodes are electrically connected to the anodic liner. An electric current is passed through the anodic liner to the anodes, through the electrolyte to the cathodes, and aluminum is deposited on said cathodes. Oxygen bubbles are generated at the anodes and the anodic liner, the bubbles stirring the electrolyte. Molten aluminum is collected from the cathodes into a tubular member positioned underneath the cathodes. The tubular member is in liquid communication with each cathode to collect the molten aluminum therefrom while excluding electrolyte. Molten aluminum is delivered through the tubular member to a molten aluminum reservoir located substantially opposite the anodes and cathodes. The molten aluminum is collected from the cathodes and delivered to the reservoir while avoiding contact of the molten aluminum with the anodic bottom.

Beck, Theodore R. (Seattle, WA); Brown, Craig W. (Seattle, WA)

2002-07-16T23:59:59.000Z

83

Gating of Permanent Molds for ALuminum Casting  

SciTech Connect (OSTI)

This report summarizes a two-year project, DE-FC07-01ID13983 that concerns the gating of aluminum castings in permanent molds. The main goal of the project is to improve the quality of aluminum castings produced in permanent molds. The approach taken was determine how the vertical type gating systems used for permanent mold castings can be designed to fill the mold cavity with a minimum of damage to the quality of the resulting casting. It is evident that somewhat different systems are preferred for different shapes and sizes of aluminum castings. The main problems caused by improper gating are entrained aluminum oxide films and entrapped gas. The project highlights the characteristic features of gating systems used in permanent mold aluminum foundries and recommends gating procedures designed to avoid common defects. The study also provides direct evidence on the filling pattern and heat flow behavior in permanent mold castings.

David Schwam; John F. Wallace; Tom Engle; Qingming Chang

2004-03-30T23:59:59.000Z

84

PREDICTION OF LOW-CYCLE FATIGUE-LIFE BY ACOUSTIC EMISSION. PART 1: 2024-T3 ALUMINUM ALLOY PART 2: ALCLAD 7075-T6/ ALUMINUM ALLOY  

E-Print Network [OSTI]

low-cycle fatigue life of Aluminum sheet alloys by acoustictoughness of structural aluminum alloys. Fracture . Fracturetoughness of structural aluminum alloys, Eng. Fracture Mech.

Baram, J.

2013-01-01T23:59:59.000Z

85

Decontamination and reuse of ORGDP aluminum scrap  

SciTech Connect (OSTI)

The Gaseous Diffusion Plants, or GDPs, have significant amounts of a number of metals, including nickel, aluminum, copper, and steel. Aluminum was used extensively throughout the GDPs because of its excellent strength to weight ratios and good resistance to corrosion by UF{sub 6}. This report is concerned with the recycle of aluminum stator and rotor blades from axial compressors. Most of the stator and rotor blades were made from 214-X aluminum casting alloy. Used compressor blades were contaminated with uranium both as a result of surface contamination and as an accumulation held in surface-connected voids inside of the blades. A variety of GDP studies were performed to evaluate the amounts of uranium retained in the blades; the volume, area, and location of voids in the blades; and connections between surface defects and voids. Based on experimental data on deposition, uranium content of the blades is 0.3%, or roughly 200 times the value expected from blade surface area. However, this value does correlate with estimated internal surface area and with lengthy deposition times. Based on a literature search, it appears that gaseous decontamination or melt refining using fluxes specific for uranium removal have the potential for removing internal contamination from aluminum blades. A melt refining process was used to recycle blades during the 1950s and 1960s. The process removed roughly one-third of the uranium from the blades. Blade cast from recycled aluminum appeared to perform as well as blades from virgin material. New melt refining and gaseous decontamination processes have been shown to provide substantially better decontamination of pure aluminum. If these techniques can be successfully adapted to treat aluminum 214-X alloy, internal and, possibly, external reuse of aluminum alloys may be possible.

Compere, A.L.; Griffith, W.L.; Hayden, H.W.; Wilson, D.F.

1996-12-01T23:59:59.000Z

86

Formulation and method for preparing gels comprising hydrous aluminum oxide  

SciTech Connect (OSTI)

Formulations useful for preparing hydrous aluminum oxide gels contain a metal salt including aluminum, an organic base, and a complexing agent. Methods for preparing gels containing hydrous aluminum oxide include heating a formulation to a temperature sufficient to induce gel formation, where the formulation contains a metal salt including aluminum, an organic base, and a complexing agent.

Collins, Jack L.

2014-06-17T23:59:59.000Z

87

ALUMINUM--2001 6.1 By Patricia A. Plunkert  

E-Print Network [OSTI]

ALUMINUM--2001 6.1 ALUMINUM By Patricia A. Plunkert Domestic survey data and tables were prepared, international data coordinator. In 2001, 11 domestic companies operated 23 primary aluminum reduction plants in the Pacific Northwest, and low metal prices led several aluminum smelters to continue to reduce production

88

ALUMINUM--1998 5.1 By Patricia A. Plunkert  

E-Print Network [OSTI]

ALUMINUM--1998 5.1 ALUMINUM By Patricia A. Plunkert Domestic survey data and tables were prepared, international data coordinator. In 1998, 13 domestic companies operated 23 primary aluminum reduction plants to be $5.4 billion. Aluminum recovered from purchased scrap decreased to approximately 3.4 million tons

89

ALUMINUM--1999 5.1 By Patricia A. Plunkert  

E-Print Network [OSTI]

ALUMINUM--1999 5.1 ALUMINUM By Patricia A. Plunkert Domestic survey data and tables were prepared, international data coordinator. In 1999, 12 domestic companies operated 23 primary aluminum reduction plants to be $5.5 billion. During the year, two proposed mergers that involved five major aluminum companies were

90

ALUMINUM--2000 6.1 By Patricia A. Plunkert  

E-Print Network [OSTI]

ALUMINUM--2000 6.1 ALUMINUM By Patricia A. Plunkert Domestic survey data and tables were prepared, international data coordinator. In 2000, 12 domestic companies operated 23 primary aluminum reduction plants to be $6 billion. Increased energy costs, particularly in the Pacific Northwest, led several aluminum

91

UNIVERSITY of CALIFORNIA ATOMIC LAYER DEPOSITION OF ALUMINUM OXIDE  

E-Print Network [OSTI]

UNIVERSITY of CALIFORNIA SANTA CRUZ ATOMIC LAYER DEPOSITION OF ALUMINUM OXIDE A thesis submitted deposition (ALD) of aluminum oxide on crystalline silicon and anodized aluminum substrates. A homemade ALD system is used with trimethylaluminum (TMA) and water as precursors to deposit uniform aluminum oxide

Belanger, David P.

92

Synthesis of nanocrystalline aluminum matrix composites reinforced with in situ devitrified Al-Ni-La amorphous particles  

E-Print Network [OSTI]

of nanocrystalline aluminum matrix composites reinforcedAbstract Nanocrystalline aluminum matrix composites wereamount of nanoscale aluminum oxide, nitride and carbide

Zhang, Zhihui H; Han, B Q; Witkin, D; Ajdelsztajn, L; Laverna, E J

2006-01-01T23:59:59.000Z

93

Identification of aluminum scale with the aid of synthetically produced basic aluminum fluoride complexes  

SciTech Connect (OSTI)

Aluminum scaling can be a problem following HF acidizing. In this paper, a series of synthetic aluminum scales was prepared and identified. The aluminum compounds of a field scale were identified with similar procedures. Recent field work showed that the use of acetic acid in the HF acidizing sequences significantly decreased scaling. The role of acetic acid is discussed on the basis of laboratory support of these field data.

Shuchart, C.E. (Halliburton Services, Duncan, OK (United States)); Ali, S.A. (Chevron U.S.A. Inc., New Orleans, LA (United States))

1993-11-01T23:59:59.000Z

94

Aluminum (Al) Etch Instructions The CEPSR cleanroom stores Aluminum Etchant Type A, a pre-made product used for  

E-Print Network [OSTI]

Aluminum (Al) Etch Instructions The CEPSR cleanroom stores Aluminum Etchant Type A, a pre-made product used for removing or etching away aluminum. This etchant is stored inside the acid or corrosive a specific thickness of aluminum that is desired. Note: Once the bottle is empty or you find that it's etch

Kim, Philip

95

Dry lubricant films for aluminum forming.  

SciTech Connect (OSTI)

During metal forming process, lubricants are crucial to prevent direct contact, adhesion, transfer and scuffing of workpiece materials and tools. Boric acid films can be firmly adhered to the clean aluminum surfaces by spraying their methanol solutions and provide extremely low friction coefficient (about 0.04). The cohesion strengths of the bonded films vary with the types of aluminum alloys (6061, 6111 and 5754). The sheet metal forming tests indicate that boric acid films and the combined films of boric acid and mineral oil can create larger strains than the commercial liquid and solid lubricants, showing that they possess excellent lubricities for aluminum forming. SEM analyses indicate that boric acid dry films separate the workpiece and die materials, and prevent their direct contact and preserve their surface qualities. Since boric acid is non-toxic and easily removed by water, it can be expected that boric acid films are environmentally friendly, cost effective and very efficient lubricants for sheet aluminum cold forming.

Wei, J.; Erdemir, A.; Fenske, G. R.

1999-03-30T23:59:59.000Z

96

An optimal replacement problem in aluminum production  

E-Print Network [OSTI]

The aluminum production facility operated by ALCOA in Rockdale, Texas produces aluminum in a continuous manufacturing environment using steel carbon-lined smelting pots. As a result of the production process of running electricity through an electrolytic... technique known as dynamic programming, the minimum expected cost can be determined for a finite horizon Markov decision problem. This was accomplished using value iteration, a computer program written in C language, and data obtained from ALCOA...

Spanks, Lisa Marie

1992-01-01T23:59:59.000Z

97

Tensile and impact testing of an HFBR (High Flux Beam Reactor) control rod follower  

SciTech Connect (OSTI)

The Materials Technology Group of the Department of Nuclear Energy (DNE) at Brookhaven National Laboratory (BNL) undertook a program to machine and test specimens from a control rod follower from the High Flux Beam Reactor (HFBR). Tensile and Charpy impact specimens were machined and tested from non-irradiated aluminum alloys in addition to irradiated 6061-T6 from the HFBR. The tensile test results on irradiated material showed a two-fold increase in tensile strength to a maximum of 100.6 ksi. The impact resistance of the irradiated material showed a six-fold decrease in values (3 in-lb average) compared to similar non-irradiated material. Fracture toughness (K{sub I}) specimens were tested on an unirradiated compositionally and dimensionally similar (to HFBR follower) 6061 T-6 material with K{sub max} values of 24.8 {plus minus} 1.0 Ksi{radical}in (average) being obtained. The report concludes that the specimens produced during the program yielded reproducible and believable results and that proper quality assurance was provided throughout the program. 9 figs., 6 tabs.

Czajkowski, C.J.; Schuster, M.H.; Roberts, T.C.; Milian, L.W.

1989-08-01T23:59:59.000Z

98

A NEW A15 MULTIFILAMENTARY SUPERCONDUCTOR BASED ON THE NIOBIUM-ALUMINUM-SILICON SYSTEM  

E-Print Network [OSTI]

BASED ON THE NIOBIUM-ALUMINUM-SILICON SYSTEM Gary C. Quinnpsi. Photomicrograph of an Aluminum-Silicon eutectic filledmultifilimentary niobium-aluminum-silicon wire, a) sample #

Quinn, G.C.

2011-01-01T23:59:59.000Z

99

EFFECT OF GRAIN SIZE ON THE ACOUSTIC EMISSION GENERATED DURING PLASTIC DEFORMATION OF ALUMINUM  

E-Print Network [OSTI]

PLASTIC DEFORMATION OF ALUMINUM LAWRENCE BERKELEY LABORATORYDURING PLASTIC DEFORMATION OF ALUMINUM J. Baram Materialsof polycrystalline aluminum, of different grain sizes and at

Baram, J.

2013-01-01T23:59:59.000Z

100

Aluminum and copper in drinking water enhance inflammatory oroxidative events specifically in the brain  

E-Print Network [OSTI]

effects of iron and aluminum on stress-related genelopathy syndrome. Possible aluminum intoxication. N. Engl.Chronic exposure to aluminum in drinking water increases

Bondy, Stephen Bondy C

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Mechanical properties and microstructures of dual phase steels containing silicon, aluminum and molybdenum  

E-Print Network [OSTI]

STEELS CONTAINING SILICON, ALUMINUM AND MOLYBDENUM Thomasdeoxidizing action of aluminum results in grain refinementquench martensite, Both (a) and Aluminum particle within the

Neill, Thomas John O'

2011-01-01T23:59:59.000Z

102

CHARACTERIZATION OF THE GASEOUS AND SOLID PRODUCTS OF DECOMPOSITION OF ALUMINUM SULFATE  

E-Print Network [OSTI]

OF DECOMPOSITION OF ALUMINUM SULFATE Gary F. Knutsen (M. S.OF DECOMPOSITION OF ALUMINUM SULFATE Contents Abstract . .OF DECOMPOSITION OF ALUMINUM SULFATE Gary F. Knutsen

Knutsen, G.F.

2010-01-01T23:59:59.000Z

103

A Study of Aluminum Dependent Root Growth Inhibition in Arabidopsis thaliana  

E-Print Network [OSTI]

symptom triggered by aluminum, but not the primary cause ofRI (1986) Characterization of hydroxy-aluminum solutionsby aluminum-27 nuclear magnetic resonance spectroscopy. Soil

Nezames, Cynthia

2011-01-01T23:59:59.000Z

104

Transcriptomic analysis reveals differential gene expression in common bean (Phaseoulus vulgaris) for aluminum resistance  

E-Print Network [OSTI]

transition zone is the most aluminum-sensitive apical rootsoils is mainly limited by aluminum toxicity. In addition,L. under conditions of aluminum stress. Plant Physiol 104:

Eticha, Dejene; Zahn, Marc; Rao, Idupulapati M.; Horst, Walter J.

2009-01-01T23:59:59.000Z

105

IMPROVED FORMABILITY OF ALUMINUM-GERMANIUM NEAR EUTECTIC COMPOSITIONS THROUGH THE APPLICATION OF SUPERPLASTICITY PRINCIPLES  

E-Print Network [OSTI]

IMPROVED FORMABILITY OF ALUMINUM-GERMANIUM NEAR EUTECTICIMPROVED FORMABILITY OF ALUMINUM-GERMANIUM NEAR EUTECTICAl-Ge) wire. Al-Ge 00F Aluminum-Germanium Atomic Percentage

Pech, G.J.

2011-01-01T23:59:59.000Z

106

Aluminum Microfoams for Reduced Fuel Consumption and Pollutant Emissions of Transportation Systems  

E-Print Network [OSTI]

on the foamability of Aluminum alloy . Journal of MaterialFoamability of particle reinforced Aluminum Melt. Ma. -wiss.particle-stabilised Aluminum foams . Advanced Engineering

Pilon, Laurent

2008-01-01T23:59:59.000Z

107

E-Print Network 3.0 - aluminum cars Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aluminum Plants Background... . "DSIs" is often used interchangeably with aluminum smelters because aluminum smelters account... for the vast bulk of this categories'...

108

E-Print Network 3.0 - aluminum chloride solution Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aluminum Plants Background... . "DSIs" is often used interchangeably with aluminum smelters because aluminum smelters account... for the vast bulk of this categories'...

109

E-Print Network 3.0 - aluminum culverts Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aluminum Plants Background... . "DSIs" is often used interchangeably with aluminum smelters because aluminum smelters account... for the vast bulk of this categories'...

110

E-Print Network 3.0 - aluminum ion-induced neurotoxicity Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Aluminum Plants Background... . "DSIs" is often used interchangeably with aluminum smelters because aluminum smelters account... for the vast bulk of this categories'...

111

The viability of aluminum Zintl anion moieties within magnesium-aluminum clusters  

SciTech Connect (OSTI)

Through a synergetic combination of anion photoelectron spectroscopy and density functional theory based calculations, we have investigated the extent to which the aluminum moieties within selected magnesium-aluminum clusters are Zintl anions. Magnesium-aluminum cluster anions were generated in a pulsed arc discharge source. After mass selection, photoelectron spectra of Mg{sub m}Al{sub n}{sup ?} (m, n = 1,6; 2,5; 2,12; and 3,11) were measured by a magnetic bottle, electron energy analyzer. Calculations on these four stoichiometries provided geometric structures and full charge analyses for the cluster anions and their neutral cluster counterparts, as well as photodetachment transition energies (stick spectra). Calculations revealed that, unlike the cases of recently reported sodium-aluminum clusters, the formation of aluminum Zintl anion moieties within magnesium-aluminum clusters was limited in most cases by weak charge transfer between the magnesium atoms and their aluminum cluster moieties. Only in cases of high magnesium content, e.g., in Mg{sub 3}Al{sub 11} and Mg{sub 2}Al{sub 12}{sup ?}, did the aluminum moieties exhibit Zintl anion-like characteristics.

Wang, Haopeng; Jae Ko, Yeon; Zhang, Xinxing; Gantefoer, Gerd; Bowen, Kit H., E-mail: kiran@mcneese.edu, E-mail: akandalam@wcupa.edu, E-mail: kbowen@jhu.edu [Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States); Schnoeckel, Hansgeorg [Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany)] [Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, 76128 Karlsruhe (Germany); Eichhorn, Bryan W. [Department of Chemistry, University of Maryland, College Park, Maryland 20742 (United States)] [Department of Chemistry, University of Maryland, College Park, Maryland 20742 (United States); Jena, Puru [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States)] [Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284 (United States); Kiran, Boggavarapu, E-mail: kiran@mcneese.edu, E-mail: akandalam@wcupa.edu, E-mail: kbowen@jhu.edu [Department of Chemistry, McNeese State University, Lake Charles, Louisiana 70609 (United States)] [Department of Chemistry, McNeese State University, Lake Charles, Louisiana 70609 (United States); Kandalam, Anil K., E-mail: kiran@mcneese.edu, E-mail: akandalam@wcupa.edu, E-mail: kbowen@jhu.edu [Department of Physics, West Chester University, West Chester, Pennsylvania 19383 (United States)

2014-03-28T23:59:59.000Z

112

Excimer laser interactions with an aluminum alloy  

SciTech Connect (OSTI)

An AlCuMg alloy was irradiated using a KrF pulsed excimer laser. A microstructural study showed the presence of a laser treated zone having a uniform depth of approximately 20 {micro}m. The surface layer of the laser treated aluminum alloy exhibited a wavy topography and its surface roughness was found to depend on the number of laser pulses per step. A X-ray diffraction analysis revealed the presence of aluminum oxides and nitrides on the surface of the laser irradiated specimens. Corrosion measurements showed that the laser treated aluminum alloy exhibited a higher corrosion resistance. The corrosion behavior of the irradiated specimens is related to the energy density of the incident laser pulses.

Koutsomichalis, A.; Kefalidou, A. [National Technical Univ. of Athens (Greece). Lab. of Physical Metallurgy

1996-10-01T23:59:59.000Z

113

Aluminum phosphate ceramics for waste storage  

SciTech Connect (OSTI)

The present disclosure describes solid waste forms and methods of processing waste. In one particular implementation, the invention provides a method of processing waste that may be particularly suitable for processing hazardous waste. In this method, a waste component is combined with an aluminum oxide and an acidic phosphate component in a slurry. A molar ratio of aluminum to phosphorus in the slurry is greater than one. Water in the slurry may be evaporated while mixing the slurry at a temperature of about 140-200.degree. C. The mixed slurry may be allowed to cure into a solid waste form. This solid waste form includes an anhydrous aluminum phosphate with at least a residual portion of the waste component bound therein.

Wagh, Arun; Maloney, Martin D

2014-06-03T23:59:59.000Z

114

Does aluminum smelting cause lung disease  

SciTech Connect (OSTI)

The evidence concerning a relationship between work in the aluminum industry and lung disease has been reviewed using epidemiologic criteria. Adequate data on environmental exposure are rarely presented. Case series on aluminum potroom workers over the past 50 years have identified an asthmalike syndrome that appears to be due to an irritant rather than an allergic mechanism. These studies have been supported by evidence of within shift variability of measures of lung function. However, to date, there is inadequate evidence to resolve the question of whether potroom exposure initiates asthma or merely precipitates asthmalike symptoms in a predisposed individual. Cross-sectional studies have demonstrated evidence of reduced lung function, consistent with chronic airflow limitation. In exposed aluminum smelter workers compared to unexposed control subjects. Cigarette smoking, the major potential confounding variable, has been measured and accounted for in multivariate analyses. To date, evidence is lacking from longitudinal studies about the development of disabling chronic obstructive lung disease. Exposure to coal tar pitch volatiles in the production and consumption of anodes has biologic plausibility for an association of lung cancer with work in an aluminum smelter. Although retrospective mortality studies have failed to account for the probable high prevalence of smoking in blue collar workers, the relative risk of lung cancer is very low if present at all. Pulmonary fibrosis has not been shown to be a significant problem in aluminum smelter workers. Future research in the aluminum industry needs to concentrate on longitudinal studies, preferably with an inception cohort for the investigation of potroom asthma. 92 references.

Abramson, M.J.; Wlodarczyk, J.H.; Saunders, N.A.; Hensley, M.J.

1989-04-01T23:59:59.000Z

115

E-Print Network 3.0 - aluminum metal matrix Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Discontinuously reinforced aluminum composites, Nanophase aluminum alloys, Bulk metallic glasses... of Missouri 1993 Young Metallurgist Award from the Indian...

116

EFFECT OF MECHANICAL DISCONTINUITIES ON THE STRENGTH OF POLYCRYSTALLINE ALUMINUM OXIDE  

E-Print Network [OSTI]

THE STRENGTH OF POLYCRYSTALLINE ALUMINUM OXIDE S. Wallace ofThe variables and number of aluminum oxide (almnina). size~

Wallace, J.S.

2011-01-01T23:59:59.000Z

117

Reaction of Aluminum with Water to Produce Hydrogen: A Study...  

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

Produce Hydrogen: A Study of Issues Related to the Use of Aluminum for On-Board Vehicular Hydrogen Storage. Version 2, 2010. Reaction of Aluminum with Water to Produce Hydrogen: A...

118

Development of a Cosmetic Corrosion Test for Aluminum Autobody...  

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

a Cosmetic Corrosion Test for Aluminum Autobody Panels AMD 309 Development of a Cosmetic Corrosion Test for Aluminum Autobody Panels AMD 309 Presentation from the U.S. DOE Office...

119

aluminum pressure vessels: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

angular region on the surface Stokes, Yvonne 204 iCons, 2011 Alzheimers and Aluminum: Lesson Plan Chemistry Websites Summary: iCons, 2011 Alzheimers and Aluminum: Lesson Plan...

120

ALUMINUM--1997 5.1 By Patricia A. Plunkert  

E-Print Network [OSTI]

aluminum smelter by February 1998 at an annual rate of 27,000 tons. The Troutdale smelter, which has at its 204,000-ton- per-year Longview, WA, primary aluminum smelter. The restart was expected

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Reaction of Aluminum with Water to Produce Hydrogen - 2010 Update  

Fuel Cell Technologies Publication and Product Library (EERE)

A Study of Issues Related to the Use of Aluminum for On-Board Vehicular Hydrogen Storage The purpose of this White Paper is to describe and evaluate the potential of aluminum-water reactions for the

122

New, More Efficient Technology for Remelting Aluminum Chips  

E-Print Network [OSTI]

step. Lastly, a new more efficient technology for stirring the molten aluminum during the recycling process will be introduce. A molten metal pump will be employed to stir the molten aluminum more completely....

Hosek, D.

123

Strategies for aluminum recycling : insights from material system optimization  

E-Print Network [OSTI]

The dramatic increase in aluminum consumption over the past decades necessitates a societal effort to recycle and reuse these materials to promote true sustainability and energy savings in aluminum production. However, the ...

Li, Preston Pui-Chuen

2005-01-01T23:59:59.000Z

124

aluminum inorganic compounds: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

(Chair... Balasubramanian, Rajasekaran 1991-01-01 211 The corrosion of aluminum in boric acid solutions Texas A&M University - TxSpace Summary: THE CORROSION OF ALUMINUM IN...

125

Cathode Connector For Aluminum Low Temperature Smelting Cell  

DOE Patents [OSTI]

Cathode connector means for low temperature aluminum smelting cell for connecting titanium diboride cathode or the like to bus bars.

Brown, Craig W. (Seattle, WA); Beck, Theodore R. (Seattle, WA); Frizzle, Patrick B. (Seattle, WA)

2003-07-16T23:59:59.000Z

126

Method And Reactor For Production Of Aluminum By Carbothermic Reduction Of Alumina  

DOE Patents [OSTI]

A hollow partition wall is employed to feed carbon material to an underflow of a carbothermic reduction furnace used to make aluminum. The partition wall divides a low temperature reaction zone where aluminum oxide is reacted with carbon to form aluminum carbide and a high temperature reaction zone where the aluminum carbide and remaining aluminum oxide are reacted to form aluminum and carbon monoxide.

Aune, Jan Arthur (Ytre Enebakk, NO); Johansen, Kai (Kristiansand, NO)

2004-10-19T23:59:59.000Z

127

Hydrogen Peroxide Storage in Small Sealed Tanks  

SciTech Connect (OSTI)

Unstabilized hydrogen peroxide of 85% concentration has been prepared in laboratory quantities for testing material compatibility and long term storage on a small scale. Vessels made of candidate tank and liner materials ranged in volume from 1 cc to 2540 cc. Numerous metals and plastics were tried at the smallest scales, while promising ones were used to fabricate larger vessels and liners. An aluminum alloy (6061-T6) performed poorly, including increasing homogeneous decay due to alloying elements entering solution. The decay rate in this high strength aluminum was greatly reduced by anodizing. Better results were obtained with polymers, particularly polyvinylidene fluoride. Data reported herein include ullage pressures as a function of time with changing decay rates, and contamination analysis results.

Whitehead, J.

1999-10-20T23:59:59.000Z

128

ALUMINUM--2003 5.1 By Patricia A. Plunkert  

E-Print Network [OSTI]

, about 1.5 million metric tons per year (Mt/yr) of domestic primary aluminum smelting capacity, including idled potlines at operating smelters, equivalent to about 35% of total capacity, was closed. Aluminum and the container and packaging industries remained the leading markets for aluminum products in Canada

129

Aluminum Reactions and Problems in Municipal Solid Waste Landfills  

E-Print Network [OSTI]

Aluminum Reactions and Problems in Municipal Solid Waste Landfills G. Vincent Calder, Ph.D.1 ; and Timothy D. Stark, Ph.D., P.E., F.ASCE2 Abstract: Aluminum enters municipal solid waste MSW landfills from untreated raw curbside trash MSW , industrial waste, and aluminum production wastes variously called dross

130

Aluminum Removal from Photographic Waste Submitted to Dr. Tony Bi  

E-Print Network [OSTI]

Aluminum Removal from Photographic Waste Submitted to Dr. Tony Bi By: Kristen Favel, Tiffany Jung, and Kenny Tam CHBE 484 University of British Columbia April 15, 2009 #12;ii "Aluminum Removal from photographic waste has shown elevated levels of aluminum in the fixer, which exceed sewer discharge standards

131

Mobilizing aluminum in crustal and mantle fluids Craig E. Manning  

E-Print Network [OSTI]

Mobilizing aluminum in crustal and mantle fluids Craig E. Manning Department of Earth and Space December 2005 Available online 9 March 2006 Abstract Aluminum is a major rock-forming element, but its low by formation of polynuclear Na­Al­Si­O clusters and/or polymers. Aluminum should not be assumed to be immobile

Manning, Craig

132

Inhibition of Aluminum Oxyhydroxide Precipitation with Citric Acid  

E-Print Network [OSTI]

Inhibition of Aluminum Oxyhydroxide Precipitation with Citric Acid Daniel M. Dabbs, Usha as an agent for increasing the solubility of aluminum oxyhydroxides in aqueous solutions of high (>2.47 mol/mol) hydroxide-to-aluminum ratios. Conversely, citric acid also colloidally stabilizes particles in aqueous

Aksay, Ilhan A.

133

Reaction of Aluminum with Water to Produce Hydrogen  

E-Print Network [OSTI]

Reaction of Aluminum with Water to Produce Hydrogen A Study of Issues Related to the Use of Aluminum for On-Board Vehicular Hydrogen Storage U.S. Department of Energy Version 1.0 - 2008 Page 1 Promoters Oxide Promoters Salt Promoters Combined Oxide and Salt Promoters Aluminum Pretreatment Molten

134

The Effects of Fe3+ Aluminum Silicate Phase Relations in  

E-Print Network [OSTI]

The Effects of Fe3+ and Mn3+ on Aluminum Silicate Phase Relations in North-Central New Mexico, U, New Mexico 87131 (Received 28 November 1983; in revised form 2 October 1984) ABSTRACT Aluminum, then their equilibrium coexistence is invariant. However, the aluminum silicate minerals are not pure in highly oxidized

Lee, Cin-Ty Aeolus

135

POST-SHOCK TEMPERATURE MEASUREMENTS OF ALUMINUM A. Seifter1  

E-Print Network [OSTI]

POST-SHOCK TEMPERATURE MEASUREMENTS OF ALUMINUM A. Seifter1 , S. T. Stewart2 , M. R. Furlanetto1 concurrent VISAR measurements in the same optical path, validation experiments on aluminum have been-shock temperature of 495 K ± 30 K was recorded from a polished free surface of aluminum 2024-T4 subject to a peak

Stewart, Sarah T.

136

Review Article Aluminum-Induced Entropy in Biological Systems  

E-Print Network [OSTI]

Review Article Aluminum-Induced Entropy in Biological Systems: Implications for Neurological years, mining, smelting, and refining of aluminum (Al) in various forms have increasingly exposed living of the Al toxicants to which we are being exposed. 1. Introduction Aluminum (Al) is the most common metal

Seneff, Stephanie

137

Reaction of Aluminum with Water to Produce Hydrogen  

E-Print Network [OSTI]

Reaction of Aluminum with Water to Produce Hydrogen A Study of Issues Related to the Use of Aluminum for On-Board Vehicular Hydrogen Storage U.S. Department of Energy Version 2 - 2010 1 #12 Promoters Oxide Promoters Salt Promoters Combined Oxide and Salt Promoters Aluminum Pretreatment Molten

138

Optical frequency standards based on mercury and aluminum ions  

E-Print Network [OSTI]

Optical frequency standards based on mercury and aluminum ions W. M. Itano, J. C. Bergquist, A-16 . Keywords: aluminum, atomic clocks, frequency standards, ion traps, mercury 1. INTRODUCTION Optical frequency standards based on the mercury ion and, more recently, the aluminum ion are under devel- opment

139

ccsd00002835, Light scattering from cold rolled aluminum surfaces  

E-Print Network [OSTI]

ccsd­00002835, version 2 ­ 14 Sep 2004 Light scattering from cold rolled aluminum surfaces Damien Camille Soula , 31400 Toulouse, France We present experimental light scattering measurements from aluminum scattering measurements of an s-polarized electromagnetic wave (632.8 nanometers) from a rough aluminum alloy

140

DESCRIBING THE PLASTIC DEFORMATION OF ALUMINUM SOFTBALL BATS  

E-Print Network [OSTI]

DESCRIBING THE PLASTIC DEFORMATION OF ALUMINUM SOFTBALL BATS E. BIESEN1 AND L. V. SMITH2 Washington-mail: lvsmith@wsu.edu Hollow aluminum bats were introduced over 30 years ago to provide improved durability over durability. Accordingly, the plastic deformation from a ball impact of a single-wall aluminum bat

Smith, Lloyd V.

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Activated aluminum hydride hydrogen storage compositions and uses thereof  

DOE Patents [OSTI]

In one aspect, the invention relates to activated aluminum hydride hydrogen storage compositions containing aluminum hydride in the presence of, or absence of, hydrogen desorption stimulants. The invention particularly relates to such compositions having one or more hydrogen desorption stimulants selected from metal hydrides and metal aluminum hydrides. In another aspect, the invention relates to methods for generating hydrogen from such hydrogen storage compositions.

Sandrock, Gary (Ringwood, NJ); Reilly, James (Bellport, NY); Graetz, Jason (Mastic, NY); Wegrzyn, James E. (Brookhaven, NY)

2010-11-23T23:59:59.000Z

142

Membrane Purification Cell for Aluminum Recycling  

SciTech Connect (OSTI)

Recycling mixed aluminum scrap usually requires adding primary aluminum to the scrap stream as a diluent to reduce the concentration of non-aluminum constituents used in aluminum alloys. Since primary aluminum production requires approximately 10 times more energy than melting scrap, the bulk of the energy and carbon dioxide emissions for recycling are associated with using primary aluminum as a diluent. Eliminating the need for using primary aluminum as a diluent would dramatically reduce energy requirements, decrease carbon dioxide emissions, and increase scrap utilization in recycling. Electrorefining can be used to extract pure aluminum from mixed scrap. Some example applications include producing primary grade aluminum from specific scrap streams such as consumer packaging and mixed alloy saw chips, and recycling multi-alloy products such as brazing sheet. Electrorefining can also be used to extract valuable alloying elements such as Li from Al-Li mixed scrap. This project was aimed at developing an electrorefining process for purifying aluminum to reduce energy consumption and emissions by 75% compared to conventional technology. An electrolytic molten aluminum purification process, utilizing a horizontal membrane cell anode, was designed, constructed, operated and validated. The electrorefining technology could also be used to produce ultra-high purity aluminum for advanced materials applications. The technical objectives for this project were to: - Validate the membrane cell concept with a lab-scale electrorefining cell; - Determine if previously identified voltage increase issue for chloride electrolytes holds for a fluoride-based electrolyte system; - Assess the probability that voltage change issues can be solved; and - Conduct a market and economic analysis to assess commercial feasibility. The process was tested using three different binary alloy compositions (Al-2.0 wt.% Cu, Al-4.7 wt.% Si, Al-0.6 wt.% Fe) and a brazing sheet scrap composition (Al-2.8 wt.% Si-0.7 wt.% Fe-0.8 wt.% Mn),. Purification factors (defined as the initial impurity concentration divided by the final impurity concentration) of greater than 20 were achieved for silicon, iron, copper, and manganese. Cell performance was measured using its current and voltage characteristics and composition analysis of the anode, cathode, and electrolytes. The various cells were autopsied as part of the study. Three electrolyte systems tested were: LiCl-10 wt. % AlCl3, LiCl-10 wt. % AlCl3-5 wt.% AlF3 and LiF-10 wt.% AlF3. An extended four-day run with the LiCl-10 wt.% AlCl3-5 wt.% AlF3 electrolyte system was stable for the entire duration of the experiment, running at energy requirements about one third of the Hoopes and the conventional Hall-Heroult process. Three different anode membranes were investigated with respect to their purification performance and survivability: a woven graphite cloth with 0.05 cm nominal thickness & > 90 % porosity, a drilled rigid membrane with nominal porosity of 33%, and another drilled rigid graphite membrane with increased thickness. The latter rigid drilled graphite was selected as the most promising membrane design. The economic viability of the membrane cell to purify scrap is sensitive to primary & scrap aluminum prices, and the cost of electricity. In particular, it is sensitive to the differential between scrap and primary aluminum price which is highly variable and dependent on the scrap source. In order to be economically viable, any scrap post-processing technology in the U.S. market must have a total operating cost well below the scrap price differential of $0.20-$0.40 per lb to the London Metal Exchange (LME), a margin of 65%-85% of the LME price. The cost to operate the membrane cell is estimated to be < $0.24/lb of purified aluminum. The energy cost is estimated to be $0.05/lb of purified aluminum with the remaining costs being repair and maintenance, electrolyte, labor, taxes and depreciation. The bench-scale work on membrane purification cell process has demonstrated technological advantages and subs

David DeYoung; James Wiswall; Cong Wang

2011-11-29T23:59:59.000Z

143

ECONOMIC IMPACT OF CENTURY ALUMINUM OF  

E-Print Network [OSTI]

ECONOMIC IMPACT OF CENTURY ALUMINUM OF WEST VIRGINIA, INC. By Randall A. Childs Bureau of Business and Economic Research College of Business and Economics West Virginia more than 660 employees with a production capacity of 170,000 tonnes per year. The economic impact

Mohaghegh, Shahab

144

Aluminum Solubility in Complex Electrolytes - 13011  

SciTech Connect (OSTI)

Predicting aluminum solubility for Hanford and Savannah River waste liquids is very important for their disposition. It is a key mission goal at each Site to leach as much aluminum as practical from sludges in order to minimize the amount of vitrified high level waste. And it is correspondingly important to assure that any soluble aluminum does not precipitate during subsequent decontamination of the liquid leachates with ion exchange. This report shows a very simple and yet thermodynamic model for aluminum solubility that is consistent with a wide range of Al liquors, from simple mixtures of hydroxide and aluminate to over 300 Hanford concentrates and to a set of 19 Bayer liquors for temperatures from 20-100 deg. C. This dimer-dS{sub mix} (DDS) model incorporates an ideal entropy of mixing along with previous reports for the Al dimer, water activities, gibbsite, and bayerite thermodynamics. We expect this model will have broad application for nuclear wastes as well as the Bayer gibbsite process industry. (authors)

Agnew, S.F. [Columbia Energy and Environmental Services, Inc., 1806 Terminal Dr., Richland, WA 99354 (United States)] [Columbia Energy and Environmental Services, Inc., 1806 Terminal Dr., Richland, WA 99354 (United States); Johnston, C.T. [Dept. of Crop, Soil, and Environmental Sciences, Purdue University, West Lafayette, IN 47907 (United States)] [Dept. of Crop, Soil, and Environmental Sciences, Purdue University, West Lafayette, IN 47907 (United States)

2013-07-01T23:59:59.000Z

145

Chemical vapor deposition of aluminum oxide  

DOE Patents [OSTI]

An aluminum oxide film is deposited on a heated substrate by CVD from one or more alkylaluminum alkoxide compounds having composition R.sub.n Al.sub.2 (OR').sub.6-n, wherein R and R' are alkyl groups and n is in the range of 1 to 5.

Gordon, Roy (Cambridge, MA); Kramer, Keith (Cleveland, OH); Liu, Xinye (Cambridge, MA)

2000-01-01T23:59:59.000Z

146

FLOWSHEET FOR ALUMINUM REMOVAL FROM SLUDGE BATCH 6  

SciTech Connect (OSTI)

Samples of Tank 12 sludge slurry show a substantially larger fraction of aluminum than originally identified in sludge batch planning. The Liquid Waste Organization (LWO) plans to formulate Sludge Batch 6 (SB6) with about one half of the sludge slurry in Tank 12 and one half of the sludge slurry in Tank 4. LWO identified aluminum dissolution as a method to mitigate the effect of having about 50% more solids in High Level Waste (HLW) sludge than previously planned. Previous aluminum dissolution performed in a HLW tank in 1982 was performed at approximately 85 C for 5 days and dissolved nearly 80% of the aluminum in the sludge slurry. In 2008, LWO successfully dissolved 64% of the aluminum at approximately 60 C in 46 days with minimal tank modifications and using only slurry pumps as a heat source. This report establishes the technical basis and flowsheet for performing an aluminum removal process in Tank 51 for SB6 that incorporates the lessons learned from previous aluminum dissolution evolutions. For SB6, aluminum dissolution process temperature will be held at a minimum of 65 C for at least 24 days, but as long as practical or until as much as 80% of the aluminum is dissolved. As planned, an aluminum removal process can reduce the aluminum in SB6 from about 84,500 kg to as little as 17,900 kg with a corresponding reduction of total insoluble solids in the batch from 246,000 kg to 131,000 kg. The extent of the reduction may be limited by the time available to maintain Tank 51 at dissolution temperature. The range of dissolution in four weeks based on the known variability in dissolution kinetics can range from 44 to more than 80%. At 44% of the aluminum dissolved, the mass reduction is approximately 1/2 of the mass noted above, i.e., 33,300 kg of aluminum instead of 66,600 kg. Planning to reach 80% of the aluminum dissolved should allow a maximum of 81 days for dissolution and reduce the allowance if test data shows faster kinetics. 47,800 kg of the dissolved aluminum will be stored in Tank 8 and 21,000 kg will be stored in saltcake via evaporation. Up to 77% of the total aluminum planned for SB6 may be removed via aluminum dissolution. Storage of the aluminum-laden supernate in Tank 8 will require routine evaluation of the free hydroxide concentration in order to maintain aluminum in solution. Periodic evaluation will be established on concurrent frequency with corrosion program samples as previously established for aluminum-laden supernate from SB5 that is stored in Tank 11.

Pike, J; Jeffrey Gillam, J

2008-12-17T23:59:59.000Z

147

Fabrication of nickel microbump on aluminum using electroless nickel plating  

SciTech Connect (OSTI)

Fabrication of nickel microbumps on an aluminum electrode using a nickel displacement and a direct nickel plating process was investigated. Electroless nickel plating reaction with hypophosphite as a reducing agent was not initiated on the aluminum substrate, because aluminum does not have catalytic action on the oxidation of hypophosphite. Accordingly, nickel was initially deposited on the aluminum using nickel displacement plating for the initiation of the electroless plating. Nickel bumps on the aluminum electrode were fabricated by treatment of the nickel displacement plating followed by electroless nickel plating. Nickel microbumps also can be formed on the aluminum electrode without the displacement plating process. Activation of the aluminum surface is an indispensable process to initiate electroless nickel plating. Uniform bumps 20 {micro}m wide and 15 {micro}m high with good configuration were obtained by direct nickel plating after being activated with dimethyl amine borane.

Watanabe, H.; Honma, H. [Kanto Gakuin Univ., Yokohama, Kanagawa (Japan). Faculty of Engineering

1997-02-01T23:59:59.000Z

148

Production of sodium-22 from proton irradiated aluminum  

DOE Patents [OSTI]

A process for selective separation of sodium-22 from a proton irradiated minum target including dissolving a proton irradiated aluminum target in hydrochloric acid to form a first solution including aluminum ions and sodium ions, separating a portion of the aluminum ions from the first solution by crystallization of an aluminum salt, contacting the remaining first solution with an anion exchange resin whereby ions selected from the group consisting of iron and copper are selectively absorbed by the anion exchange resin while aluminum ions and sodium ions remain in solution, contacting the solution with an cation exchange resin whereby aluminum ions and sodium ions are adsorbed by the cation exchange resin, and, contacting the cation exchange resin with an acid solution capable of selectively separating the adsorbed sodium ions from the cation exchange resin while aluminum ions remain adsorbed on the cation exchange resin is disclosed.

Taylor, Wayne A. (Los Alamos, NM); Heaton, Richard C. (Los Alamos, NM); Jamriska, David J. (Los Alamos, NM)

1996-01-01T23:59:59.000Z

149

Spot welding of steel and aluminum using insert sheet  

SciTech Connect (OSTI)

Automobile industries have been increasingly interested in the use of aluminum and thus joining of steel and aluminum becomes of importance. The joining of the two types of metal raises a problem of brittle welds caused by the formation of intermetallic compounds. The authors solved the problem by using an insert sheet. This paper deals with the resistance spot welding of steel and aluminum sheets using insert sheets. The insert sheet used in the present development was a steel/aluminum clad sheet of the 0.8 mm thickness with 50% steel and 50% aluminum. The clad sheet was produced by warm rolling of steel and aluminum with a direct resistance heating process. Steel to be warm rolled was of EDDQ of the 0.4 mm thickness and aluminum was of JIS A1050 of 0.6 mm thickness. The mechanical properties of the insert clad sheets were in between those of the steel sheets and the aluminum sheets, while the clad sheets showed much better formability than the aluminum sheets. Resistance spot welding was conducted for 0.8 mm thick EDDQ steel sheets and 1.0 mm thick aluminum alloy (AL-5.5%Mg) sheets under the welding force of 1.96 kN, welding current ranging between 4.2 and 20.1 kA, and welding time from 0.5 to 10 cycles. The steel was spot welded to the steel side of the insert sheet while the aluminum was welded to the aluminum side. What the authors investigated were the applicable welding current range, nugget diameter, tensile shear strength, U-tension strength, and macro- and microstructures. In conclusion, steel sheets can be spot welded to aluminum sheets without difficulty by using clad sheets as insert materials while the strength level of the dissimilar metal spot welds is close to that of aluminum joints.

Oikawa, H.; Saito, T.; Yoshimura, T. [and others

1994-12-31T23:59:59.000Z

150

Synthesis and characterization of visible emission from rare-earth doped aluminum nitride, gallium nitride and gallium aluminum nitride powders and thin films  

E-Print Network [OSTI]

of the Nitrides of Aluminum and Gallium," J. Electrochem.1) 24 (1962). G. Long and L. M. Foster, "Aluminum Nitride, aRefractory for Aluminum to 2000C," J. Am. Ceram. Soc. ,

Tao, Jonathan Huai-Tse

2010-01-01T23:59:59.000Z

151

Microarray Analysis on Human Neuroblastoma Cells Exposed to Aluminum, Beta142-Amyloid or the Beta142-Amyloid Aluminum Complex  

E-Print Network [OSTI]

J (1992) Selective accumulation of aluminum and iron in theB, Tognon G, Zatta P (2005) Aluminum-triggered structuralrole of beta-amyloid(1-42)-aluminum complex in Alzheimers

2011-01-01T23:59:59.000Z

152

Recovery of gallium from aluminum industry residues  

SciTech Connect (OSTI)

A procedure is proposed to recover gallium from flue dust aluminum residues produced in plants by using solid-phase extraction with a commercial polyether-type polyurethane foam (PUF). Gallium can be separated from high concentrations of aluminum, iron, nickel, titanium, vanadium, copper, zinc, sulfate, fluoride, and chloride by extraction with PUF from 3 M sulfuric acid and 3 M sodium chloride concentration medium with at least a 92% efficiency. Gallium backextraction was fast and quantitative with ethanol solution. In all recovery steps commercial-grade reagents could be used, including tap water. The recovered gallium was precipitated with sodium hydroxide solution, purified by dissolution and precipitation, calcinated, and the final oxide was 98.6% pure.

Carvalho, M.S.; Neto, K.C.M.; Nobrega, A.W.; Medeiros, J.A.

2000-01-01T23:59:59.000Z

153

Fluorescence energy transfer enhancement in aluminum nanoapertures  

E-Print Network [OSTI]

Zero-mode waveguides (ZMWs) are confining light into attoliter volumes, enabling single molecule fluorescence experiments at physiological micromolar concentrations. Among the fluorescence spectroscopy techniques that can be enhanced by ZMWs, F\\"{o}rster resonance energy transfer (FRET) is one of the most widely used in life sciences. Combining zero-mode waveguides with FRET provides new opportunities to investigate biochemical structures or follow interaction dynamics at micromolar concentration with single molecule resolution. However, prior to any quantitative FRET analysis on biological samples, it is crucial to establish first the influence of the ZMW on the FRET process. Here, we quantify the FRET rates and efficiencies between individual donor-acceptor fluorophore pairs diffusing in aluminum zero-mode waveguides. Aluminum ZMWs are important structures thanks to their commercial availability and the large literature describing their use for single molecule fluorescence spectroscopy. We also compare the ...

de Torres, Juan; Moparthi, Satish Babu; Grigoriev, Victor; Wenger, Jrome

2015-01-01T23:59:59.000Z

154

Generation and structural characterization of aluminum cyanoacetylide  

SciTech Connect (OSTI)

Combined spectroscopy measurements and theoretical calculations bring to light a first investigation of a metallic cyanoacetylide, AlC{sub 3}N, using laser ablation molecular beam Fourier transform microwave spectroscopy. This molecule was synthesized in a supersonic expansion by the reaction of aluminum vapour with C{sub 3}N, produced from solid aluminum rods and BrCCCN in a newly constructed ablation-heating nozzle device. A set of accurate rotational and {sup 27}Al and {sup 14}N nuclear quadrupole coupling constants have been determined from the analysis of the rotational spectrum and compared with those predicted in a high-level ab initio study, conducting to the assignment of the observed species to linear AlCCCN. We have searched for this species towards the carbon-rich evolved star IRC + 10216 but only an upper limit to its abundance has been obtained.

Cabezas, Carlos; Pea, Isabel; Alonso, Jos L., E-mail: alargo@qf.uva.es, E-mail: jlalonso@qf.uva.es [Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia, Unidad Asociada CSIC, Parque Cientfico Uva, Universidad de Valladolid, Paseo de Beln 5, 47011 Valladolid (Spain); Barrientos, Carmen; Largo, Antonio, E-mail: alargo@qf.uva.es, E-mail: jlalonso@qf.uva.es [Departamento de Qumica Fsica y Qumica Inorgnica, Facultad de Ciencias, Universidad de Valladolid, Campus Miguel Delibes, Paseo de Beln 7, 47011 Valladolid (Spain); Guillemin, Jean-Claude [Institut des Sciences Chimiques de Rennes, cole Nationale Suprieure de Chimie de Rennes, CNRS, UMR 6226, 11 Alle de Beaulieu, CS 50837, 35708 Rennes Cedex 7 (France); Cernicharo, Jos [Group of Molecular Astrophysics, ICMM C/Sor Juana Ines de la Cruz N3 Cantoblanco, 28049 Madrid (Spain)

2014-09-14T23:59:59.000Z

155

Inert anodes and advanced smelting of aluminum  

SciTech Connect (OSTI)

This report provides a broad assessment of open literature and patents that exist in the area of inert anodes and their related cathode systems and cell designs, technologies that are relevant for the advanced smelting of aluminum. The report also discusses the opportunities, barriers, and issued associated with these technologies from a technical, environmental, and economic viewpoint. It discusses the outlook for the direct retrofit of advanced reduction technologies to existing aluminum smelters, and compares retrofits to ''brown field'' usage and ''green field'' adoption of the technologies. A number of observations and recommendations are offered for consideration concerning further research and development efforts that may be directed toward these advanced technologies. The opportunities are discussed in the context of incremental progress that is being made in conventional Hall-Heroult cell systems.

ASME Technical Working Group on Inert Anode Technologies

1999-07-01T23:59:59.000Z

156

Experimental superplastic characterization of advanced aluminum alloys  

E-Print Network [OSTI]

of America Chairman of Advisory Committee: Dr. R. E. Goforth An investigation into the experimental superplastic characterization of advanced aluminum alloys consisted of the design and assembly of an experimental test facility for measuring the effects.... The experimental test apparatus designed and constructed is shown in Figure 2, with four major components assembled together to form the SPF testing system. The four components are the Instron 1137 Universal testing machine, Instron 3117 furnace and Instron...

Kopp, Christopher Carl

2012-06-07T23:59:59.000Z

157

Dissolved aluminum in the Gulf of Mexico  

E-Print Network [OSTI]

in areas of minimum sediment resuspension. With limited data available it appears that the boundary of the sediment/water interface does release dissolved Al, but kinetically Al should decrease with depth in the sediment during authigenesis. The Al... DISSOLVED ALUMINUM IN THE GULF OF MEXICO A Thesis by PEGGY LYNNE MYRE Submitted to the Office of Graduate Studies of Texas A6M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1990 Majo...

Myre, Peggy Lynne

1990-01-01T23:59:59.000Z

158

Ignition of Aluminum Particles and Clouds  

SciTech Connect (OSTI)

Here we review experimental data and models of the ignition of aluminum (Al) particles and clouds in explosion fields. The review considers: (i) ignition temperatures measured for single Al particles in torch experiments; (ii) thermal explosion models of the ignition of single Al particles; and (iii) the unsteady ignition Al particles clouds in reflected shock environments. These are used to develop an empirical ignition model appropriate for numerical simulations of Al particle combustion in shock dispersed fuel explosions.

Kuhl, A L; Boiko, V M

2010-04-07T23:59:59.000Z

159

Forward viewing OCT endomicroscopy  

E-Print Network [OSTI]

A forward viewing fiber optic-based imaging probe device was designed and constructed for use with ultrahigh speed optical coherence tomography in the human gastrointestinal tract. The light source was a MEMS-VCSEL at 1300 ...

Liang, Kaicheng

2014-01-01T23:59:59.000Z

160

THE PROTOTYPE ALUMINUM - CARBON SINGLE, DOUBLE, AND TRIPLE BONDS: Al - CH3, Al = CH2, AND Al. = CH  

E-Print Network [OSTI]

three prototype Table II. aluminum-carbon bonds and theirPhysics THE PROTOTYPE ALUMINUM - CARBON SINGLE, DOUBLE, ANDLBL-l0871 The Prototype Aluminum - Carbon Single, Double.

Fox, Douglas J.

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Influence of argon and oxygen on charge-state-resolved ion energy distributions of filtered aluminum arcs  

E-Print Network [OSTI]

energy distributions of filtered aluminum arcs Johanna Rosndistributions (IEDs) in filtered aluminum vacuum arc plasmasfor vacuum arc plasmas. Aluminum plasma, for example,

Rosen, Johanna; Anders, Andre; Mraz, Stanislav; Atiser, Adil; Schneider, Jochen M.

2006-01-01T23:59:59.000Z

162

Lithium-aluminum-carbonate-hydroxide hydrate coatings on aluminum alloys: Composition, structure, and processing bath chemistry  

SciTech Connect (OSTI)

A new corrosion resistant coating, being designed for possible replacement of chromate conversion coatings on aluminum alloys, was investigated for composition, structure, and solubility using a variety of techniques. The stoichiometry of the material, prepared by immersion of 1100 Al alloy into a lithium carbonate-lithium hydroxide solution, was approximately Li{sub 2}Al{sub 4}CO{sub 3}(OH){sub 12}{center_dot}3H{sub 2}O. Processing time was shown to be dependent upon the bath pH, and consistent coating formation required supersaturation of the coating bath with aluminum. The exact crystal structure of this hydrotalcite material, hexagonal or monoclinic, was not determined. It was shown that both the bulk material and coatings with the same nominal composition and crystal structure could be formed by precipitation from an aluminum supersatured solution of lithium carbonate. {copyright} {ital 1996 Materials Research Society.}

Drewien, C.A.; Eatough, M.O.; Tallant, D.R.; Hills, C.R.; Buchheit, R.G. [Materials and Process Sciences Center, Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)

1996-06-01T23:59:59.000Z

163

INSTITUTE FOR SHOCK PHYSICSLaser-Shock Spall Experiments in Aluminum II: Interface Measurements  

E-Print Network [OSTI]

fracture in aluminum alloys at short time scales (10-8 s) · Role of PMMA backing material window -Changing-T6 or 1100-H14 aluminum targets approximately 110 m thick · PMMA with vapor deposited Al mirror Soda. (2006) * Advised by Yoshi Toyoda and Y. M. Gupta Aluminum Thickness (m) Aluminum Alloy Aluminum

Collins, Gary S.

164

Viewing biology in action | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Viewing biology in action Viewing biology in action DOE-funded pilot program will create mesoscale biological imaging platform James Evans EMSL received first-year funding of...

165

Electrodeposition of magnesium and magnesium/aluminum alloys  

DOE Patents [OSTI]

Electrolytes and plating solutions for use in processes for electroplating and electroforming pure magnesium and alloys of aluminum and magnesium and also electrodeposition processes. An electrolyte of this invention is comprised of an alkali metal fluoride or a quaternary ammonium halide, dimethyl magnesium and/or diethyl magnesium, and triethyl aluminum and/or triisobutyl aluminum. An electrolyte may be dissolved in an aromatic hydrocarbon solvent to form a plating solution. The proportions of the component compounds in the electrolyte are varied to produce essentially pure magnesium or magnesium/aluminum alloys having varying selected compositions.

Mayer, A.

1988-01-21T23:59:59.000Z

166

Aluminum fluoride inhibition of glucocorticoid receptor inactivation and transformation  

SciTech Connect (OSTI)

Fluoride, in the presence of aluminum ions, reversibly inhibits the temperature-mediated inactivation of unoccupied glucocorticoid receptors in cytosol preparations from mouse L cells. The effect is concentration-dependent, with virtually complete stabilization of specific glucocorticoid-binding capacity at 2 mM fluoride and 100 microM aluminum. These concentrations of aluminum and fluoride are ineffective when used separately. Aluminum fluoride also stabilizes receptors toward inactivation by gel filtration and ammonium sulfate precipitation. Aluminum fluoride prevents temperature-dependent transformation of steroid-receptor complexes to the DNA-binding state. Aluminum fluoride does not inhibit calf intestine alkaline phosphatase, and unoccupied receptors inactivated by this enzyme in the presence of aluminum fluoride can be completely reactivated by dithiothreitol. The effects of aluminum fluoride are due to stabilization of the complex between the glucocorticoid receptor and the 90-kDa mammalian heat-shock protein hsp90, which suggests that aluminum fluoride interacts directly with the receptor. Endogenous thermal inactivation of receptors in cytosol is not accompanied by receptor dephosphorylation. However, inactivation is correlated with dissociation of hsp90 from the unoccupied receptor. These results support the proposal that hsp90 is required for the receptor to bind steroid and dissociation of hsp90 is sufficient to inactivate the unoccupied receptor.

Housley, P.R. (Univ. of South Carolina School of Medicine, Columbia (USA))

1990-04-10T23:59:59.000Z

167

Virtual Aluminum Castings An Industrial Application of Integrated...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Virtual Aluminum Castings An Industrial Application of Integrated Computational Materials Engineering Home Author: J. Allison, M. Li, C. Wolverton, X. Su Year: 2006 Abstract: The...

168

Fracture of welded aluminum thin-walled structures  

E-Print Network [OSTI]

A comprehensive methodology was developed in the thesis for damage prediction of welded aluminum thin-walled structures, which includes material modeling, calibration, numerical simulation and experimental verification. ...

Zheng, Li, Ph. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

169

Lower Cost Lithium Ion Batteries From Aluminum Substituted Cathode...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Lower Cost Lithium Ion Batteries From Aluminum Substituted Cathode Materials Lawrence Berkeley National Laboratory Contact LBL About This Technology Technology Marketing...

170

aluminum weld strength: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Repository Summary: Damping and Dynamic Modulus Measurements in Alumina and Tungsten Fibre-Reinforced Aluminium Composites. the damping capacity of aluminum tungsten fiber...

171

aluminum smelting plant: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Repository Summary: Damping and Dynamic Modulus Measurements in Alumina and Tungsten Fibre-Reinforced Aluminium Composites. the damping capacity of aluminum tungsten fiber...

172

aluminum ingestion reduce: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Repository Summary: Damping and Dynamic Modulus Measurements in Alumina and Tungsten Fibre-Reinforced Aluminium Composites. the damping capacity of aluminum tungsten fiber...

173

Electrodeposition of magnesium and magnesium/aluminum alloys  

DOE Patents [OSTI]

Electrolytes and plating solutions for use in processes for electroplating and electroforming pure magnesium and alloys of aluminum and magnesium and also electrodeposition processes. An electrolyte of this invention is comprised of an alkali metal fluoride or a quaternary ammonium halide, dimethyl magnesium and/or diethyl magnesium, and triethyl aluminum and/or triisobutyl aluminum. An electrolyte may be dissolved in an aromatic hydrocarbon solvent to form a plating solution. The proportions of the component compounds in the electrolyte are varied to produce essentially pure magnesium or magnesium/aluminum alloys having varying selected compositions.

Mayer, Anton (Los Alamos, NM)

1988-01-01T23:59:59.000Z

174

aluminum equivalent approximation: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

- TxSpace Summary: based coatings. The Coors Brewing Company Can Manufacturing Plant has been utilizing this technology in full scale aluminum can production since 1975,...

175

aluminum composites final: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in Biological Systems: Implications for Neurological years, mining, smelting, and refining of aluminum (Al) in various forms have increasingly exposed living of the Al...

176

Joining of parts via magnetic heating of metal aluminum powders  

DOE Patents [OSTI]

A method of joining at least two parts includes steps of dispersing a joining material comprising a multi-phase magnetic metal-aluminum powder at an interface between the at least two parts to be joined and applying an alternating magnetic field (AMF). The AMF has a magnetic field strength and frequency suitable for inducing magnetic hysteresis losses in the metal-aluminum powder and is applied for a period that raises temperature of the metal-aluminum powder to an exothermic transformation temperature. At the exothermic transformation temperature, the metal-aluminum powder melts and resolidifies as a metal aluminide solid having a non-magnetic configuration.

Baker, Ian

2013-05-21T23:59:59.000Z

177

Aluminum nitrate recrystallization and recovery from liquid extraction raffinates  

SciTech Connect (OSTI)

The solid sludges resulting form biodenitrification of discarded aluminum nitrate are the largest Y-12 Plant process solid waste. Aluminum nitrate feedstocks also represent a major plant materials cost. The chemical constraints on aluminum nitrate recycle were investigated to determine the feasibility of increasing recycle while maintaining acceptable aluminum nitrate purity. Reported phase behavior of analogous systems, together with bench research, indicated that it would be possible to raise the recycle rate from 35% to between 70 and 90% by successive concentration and recrystallization of the mother liquor. A full scale pilot test successfully confirmed the ability to obtain 70% recycle in existing process equipment.

Griffith, W.L.; Compere, A.L.; Googin, J.M.; Huxtable, W.P.

1991-09-01T23:59:59.000Z

178

Microsoft PowerPoint - Aluminum Concentrations in Storm Water...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

It is never found free in nature and is found in most rocks, primarily in stable silicate mineral phases such as feldspars and phylosilicates. Aluminum enters environmental...

179

ORNL: Low-Cost Direct Bonded Aluminum (DBA) Substrates (Agreement...  

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

Direct Bonded Aluminum (DBA) Substrates (Agreement ID:23278) 2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

180

ORNL: Low-Cost Direct Bonded Aluminum (DBA) Substrates (Agreement...  

Broader source: Energy.gov (indexed) [DOE]

Low-Cost Direct Bonded Aluminum (DBA) Substrates H. -T. Lin, A. A. Wereszczak, and S. Waters Oak Ridge National Laboratory This presentation does not contain any proprietary,...

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Measurement of tool forces in diamond turning  

SciTech Connect (OSTI)

A dynamometer has been designed and built to measure forces in diamond turning. The design includes a 3-component, piezoelectric transducer. Initial experiments with this dynamometer system included verification of its predicted dynamic characteristics as well as a detailed study of cutting parameters. Many cutting experiments have been conducted on OFHC Copper and 6061-T6 Aluminum. Tests have involved investigation of velocity effects, and the effects of depth and feedrate on tool forces. Velocity has been determined to have negligible effects between 4 and 21 m/s. Forces generally increase with increasing depth of cut. Increasing feedrate does not necessarily lead to higher forces. Results suggest that a simple model may not be sufficient to describe the forces produced in the diamond turning process.

Drescher, J.; Dow, T.A.

1988-12-01T23:59:59.000Z

182

Ab Initio Study of the Interaction of Water with Cluster Models of the Aluminum Terminated (0001) r-Aluminum Oxide Surface  

E-Print Network [OSTI]

Ab Initio Study of the Interaction of Water with Cluster Models of the Aluminum Terminated (0001) r-Aluminum to hydroxylation of the aluminum terminated surface, the two water process was found to be the most exothermic, occurring within 10-2 s. I. Introduction As one of the most important ceramic materials, R-aluminum oxide

Schlegel, H. Bernhard

183

Long-term and Highly Aluminum-resistant Root Elongation in a Camphor Tree Cinnamomum camphora  

E-Print Network [OSTI]

for the detoxification of aluminum in roots of tea plant (Oda A, Yamamoto F, Effects of aluminum on growth and biomassT, Beneficial effect of aluminum on growth of plants adapted

Osawa, Hiroki

2009-01-01T23:59:59.000Z

184

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AISI 4340 STEEL MODIFIED WITH ALUMINUM AND SILICON  

E-Print Network [OSTI]

Met. Trans. 1,2163 (1972). Aluminum_~n Iron~, S. L. Case andSTEEL MODIFIED WITH ALUMINUM AND SILIC ON ManjeshwarThe influence of additions of aluminum and combinations of

Bhat, M.S.

2010-01-01T23:59:59.000Z

185

Fabrication and applications of nanocomposite structures using anodized aluminum oxide membranes  

E-Print Network [OSTI]

Hall, Process of Reducing Aluminum from its Fluoride SaltsFrary and Z. Jeffries, Aluminum and its Production, McGraw-1 (1948). J. E. Hatch, Aluminum Properties and Physical

Gapin, Andrew Isaac

2007-01-01T23:59:59.000Z

186

Aluminum-tungsten fiber composites with cylindrical geometry and controlled architecture of tungsten reinforcement  

E-Print Network [OSTI]

Chung, D. Silicon-Aluminum Network Composites Fabricated byFigure 95 - Fine model with initial aluminum matrix failure.slight necking of the aluminum matrix. Note failed elements

Lucchese, Carl Joesph

2010-01-01T23:59:59.000Z

187

Low-Cycle Fatigue of Ultra-Fine-Grained Cryomilled 5083 Aluminum Alloy  

E-Print Network [OSTI]

of an Ultra-Fine Grained Aluminum Alloy, Poster Session,Grained Cryomilled 5083 Aluminum Alloy J.L. WALLEY, E.J.consistent with other MA aluminum alloys and is attributed

Walley, J. L.; Lavernia, E. J.; Gibeling, J. C.

2009-01-01T23:59:59.000Z

188

Control of residual aluminum from conventional treatment to improve reverse osmosis performance  

E-Print Network [OSTI]

2005. The Role of Dissolved Aluminum in Silica Chemistry forDraft Public Health Goal for Aluminum in Drinking Water .1994. Control of Residual Aluminum in Filtered Water . AWWA,

Gabelich, C J; Ishida, K P; Gerringer, F W; Evangelista, R; Kalyan, M; Suffet, I H

2006-01-01T23:59:59.000Z

189

Economic and environmental evaluation of end-of-life aerospace aluminum options using optimization methods  

E-Print Network [OSTI]

The benefits of recycling have long been understood and the conspicuous energy savings of secondary aluminum production have caused aluminum recycling to increase. Obsolete aircraft are a valuable source of aluminum scrap ...

Chen, Emily, S.B. Massachusetts Institute of Technology

2008-01-01T23:59:59.000Z

190

Geochemistry of Aluminum in High Temperature Brines  

SciTech Connect (OSTI)

The objective ofthis research is to provide quantitative data on the equilibrium and thermodynamic properties of aluminum minerals required to model changes in permeability and brine chemistry associated with fluid/rock interactions in the recharge, reservoir, and discharge zones of active geothermal systems. This requires a precise knowledge of the thermodynamics and speciation of aluminum in aqueous brines, spanning the temperature and fluid composition rangesencountered in active systems. The empirical and semi-empirical treatments of the solubility/hydrolysis experimental results on single aluminum mineral phases form the basis for the ultimate investigation of the behavior of complex aluminosilicate minerals. The principal objective in FY 1998 was to complete the solubility measurements on boehmite (AIOOH) inNaC1 media( 1 .O and 5.0 molal ionic strength, IOO-250C). However, additional measurements were also made on boehmite solubility in pure NaOH solutions in order to bolster the database for fitting in-house isopiestic data on this system. Preliminary kinetic Measurements of the dissolution/precipitation of boehmite was also carried out, although these were also not planned in the earlier objective. The 1999 objectives are to incorporate these treatments into existing codes used by the geothermal industry to predict the chemistry ofthe reservoirs; these calculations will be tested for reliability against our laboratory results and field observations. Moreover, based on the success of the experimental methods developed in this program, we intend to use our unique high temperature pH easurement capabilities to make kinetic and equilibrium studies of pH-dependent aluminosilicate transformation reactions and other pH-dependent heterogeneous reactions.

Benezeth, P.; Palmer, D.A.; Wesolowski, D.J.

1999-05-18T23:59:59.000Z

191

View dependent fluid dynamics  

E-Print Network [OSTI]

VIEW DEPENDENT FLUID DYNAMICS A Thesis by BRIAN ARTHUR BARRAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 2006 Major Subject: Visualization... Sciences VIEW DEPENDENT FLUID DYNAMICS A Thesis by BRIAN ARTHUR BARRAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, Donald...

Barran, Brian Arthur

2006-08-16T23:59:59.000Z

192

Process simulation of aluminum reduction cells  

SciTech Connect (OSTI)

A program was developed to model the dynamic behavior of an aluminum reduction cell. The program simulates the physical process by solving the heat and mass balance equations that characterize the behavior of eleven chemical species in the system. It also models operational events (such as metal tapping, anode change, etc.) and the process control logic including various alumina feeding policies and anode effect quenching. The program is a PC based Windows{reg_sign} application that takes full advantage of the Windows user interface. This paper describes the implementation of the process model and the control logic. Various results using the simulation are compared to measured data.

Tabsh, I. [CompuSIM Inc., Calgary, Alberta (Canada); Dupuis, M. [GeniSim, Jonquiere, Quebec (Canada); Gomes, A. [Alcan Aluminio do Brasil S.A., Salvador, Bahia (Brazil)

1996-10-01T23:59:59.000Z

193

Fast electromigration crack in nanoscale aluminum film  

SciTech Connect (OSTI)

The current-induced breakage of 20?nm thin aluminum layers deposited onto capacitor grade polypropylene (PP) films is experimentally studied. Biexponential current pulses of different amplitude (1015?A) and duration (0.11??s) were applied to the samples. Breakage occurred after fast development of electromigrating ?200?nm-wide cracks with initial propagation velocity of ?1?m/s under a high current density of ?10{sup 12?}A/m{sup 2}. The cracks stopped when their lengths reached 250450??m. This behavior is explained by the balance of electromigration and stress-induced atomic fluxes.

Emelyanov, O. A., E-mail: oaemel2@gmail.com; Ivanov, I. O. [St. Petersburg State Polytechnical University, Saint-Petersburg (Russian Federation)

2014-08-14T23:59:59.000Z

194

Overview of Aluminum | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergyDepartment ofOil's Impact on OurSemprius Confidential 1Aluminum Overview of

195

Regeneration of Aluminum Hydride - Energy Innovation Portal  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared at 278, 298,NIST 800-53ReferenceRegardingRegeneration of Aluminum

196

Climate VISION: Private Sector Initiatives: Aluminum: Results  

Office of Scientific and Technical Information (OSTI)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation In closing,-- Energy, science, and technologyResults The Aluminum

197

E-Print Network 3.0 - aluminum oxide doping Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Porous Aluminum Oxide Film Formed on an Electrically Insulating... Carolina 29208, USA Thin films of porous anodic aluminum oxide have been prepared on an electrically......

198

E-Print Network 3.0 - aluminum salen-type initiators Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

FILTERS FOR SOFT Summary: transmission measurements con- ducted on aluminum coated Lexan filters initially developed for the AXAF-HRC 12... of aluminum coated Lexan filters...

199

E-Print Network 3.0 - aluminum alloy vacuum Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of aluminum-lithium alloys, there is a precipitation of metastable, coherent, L1... and fracture toughness of aluminum-lithium ... Source: Ecole Polytechnique, Centre de...

200

E-Print Network 3.0 - aluminum joined employing Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Conversion and Utilization 3 ENS'05 Paris, France, 14-16 December 2005 CONTROL POROUS PATTERN OF ANODIC ALUMINUM OXIDE Summary: tightly clamped aluminum foils, rather than the...

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

E-Print Network 3.0 - aluminum hydroxide suspensions Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aluminum oxy-hydroxides ( 8 - 10). Solids The majority of studies have... hydroxide, HFO amorphous ferric oxide, HAO amorphous aluminum oxide, FH ferrihydrite; ** range...

202

E-Print Network 3.0 - aluminum high pressure Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DIVISION Summary: contribution if spaceframe designs are developed for high-volume automobile markets. Aluminum has the potential... components are made using cast aluminum,...

203

E-Print Network 3.0 - aluminum borate whisker Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

borate whisker Search Powered by Explorit Topic List Advanced Search Sample search results for: aluminum borate whisker Page: << < 1 2 3 4 5 > >> 1 Chemical Preparation of Aluminum...

204

E-Print Network 3.0 - aluminum automotive components Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Department, University of New Hampshire Collection: Engineering 24 1 Introduction 1.1 Aluminum alloys Summary: 1 1 Introduction 1.1 Aluminum alloys Automotive industry demands...

205

E-Print Network 3.0 - aluminum alloy matrix Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

studied at different length scales. At an atomic scale the aluminum... of plasticity, fracture, is studied. Microstructure and properties of aluminum-scandium alloys Recently......

206

E-Print Network 3.0 - aluminum nitride ceramics Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Emily Parker, Vanni Lughi, Noel C. MacDonald Summary: , biocompatibility, and high fracture toughness. As a piezoelectric ceramic, aluminum nitride is compatible... Aluminum...

207

E-Print Network 3.0 - aluminum alloys grain Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aluminum... -lithium and aluminum-gallium has been studied. In ... Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel Cells and Infrastructure...

208

E-Print Network 3.0 - aluminum alloy corrosion Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

production of corrosive organic compounds by P... . aeruginosa can remove zinc and magnesium from aluminum alloys, and cause corrosion. The pitting of aluminum... ... Source:...

209

E-Print Network 3.0 - aluminum air batteries Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aluminum- ion battery that will be a significant contribution to 21st century energy storage... . Because an aluminum battery is trivalent, it has a ... Source:...

210

Method of forming aluminum oxynitride material and bodies formed by such methods  

DOE Patents [OSTI]

Methods of forming aluminum oxynitride (AlON) materials include sintering green bodies comprising aluminum orthophosphate or another sacrificial material therein. Such green bodies may comprise aluminum, oxygen, and nitrogen in addition to the aluminum orthophosphate. For example, the green bodies may include a mixture of aluminum oxide, aluminum nitride, and aluminum orthophosphate or another sacrificial material. Additional methods of forming aluminum oxynitride (AlON) materials include sintering a green body including a sacrificial material therein, using the sacrificial material to form pores in the green body during sintering, and infiltrating the pores formed in the green body with a liquid infiltrant during sintering. Bodies are formed using such methods.

Bakas, Michael P. (Ammon, ID) [Ammon, ID; Lillo, Thomas M. (Idaho Falls, ID) [Idaho Falls, ID; Chu, Henry S. (Idaho Falls, ID) [Idaho Falls, ID

2010-11-16T23:59:59.000Z

211

E-Print Network 3.0 - anodizing aluminum sections Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

anodizing aluminum sections Search Powered by Explorit Topic List Advanced Search Sample search results for: anodizing aluminum sections Page: << < 1 2 3 4 5 > >> 1 ENS'05 Paris,...

212

E-Print Network 3.0 - activated aluminum oxide Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

a thin film of nickel onto a previously prepared aluminum oxide... of oxidation, reduction, and high-temperature flashes; (b) aluminum thin film deposited over tungsten...

213

E-Print Network 3.0 - aluminum alloy electrochemical Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Powered by Explorit Topic List Advanced Search Sample search results for: aluminum alloy electrochemical Page: << < 1 2 3 4 5 > >> 1 Reaction of Aluminum with Water to Produce...

214

E-Print Network 3.0 - aluminum casting technology Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Alloys Commercial, aluminum die-cast alloys... operation and failure. Constant load creep tests were conducted on aluminum die-casting alloys: B-390... experimental data for...

215

E-Print Network 3.0 - aluminum tungstate matrix Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the aluminum deposition... to the observed higher deposition efficiency in the case of copper deposition on aluminum ... Source: Grujicic, Mica - Department of Mechanical...

216

E-Print Network 3.0 - aluminum reduction plant Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

shown that aluminum nanopowders produced in gaseous argon can be divided... of copper and aluminum nanoparticles with a characteristic size of 3-40 nm is accompanied......

217

Characteristics of Aluminum Biosorption by Sargassum fluitans Biomass  

E-Print Network [OSTI]

Characteristics of Aluminum Biosorption by Sargassum fluitans Biomass Hak Sung Lee1, * and Bohumil3A 2B2, Canada Abstract: Biomass of nonliving brown seaweed Sargassum fluitans pretreated.5. There are indications that the biomass hydroxyl groups were involved in sequestering the aluminum in the form

Volesky, Bohumil

218

BWeb Copy of the Aluminum Chapter from the 1st  

E-Print Network [OSTI]

industry. It then exploits the power of arrays to develop a model which distinguishes between smelters for smelting aluminum on a commercial basis (Smith 1988, p. 17). In today's industry, a large smelter might produce around 0.2 million metric tons (mmt) of aluminum each year. The smelter would be located close

Ford, Andrew

219

Molecular Scale Assessment of Methylarsenic Sorption on Aluminum  

E-Print Network [OSTI]

Molecular Scale Assessment of Methylarsenic Sorption on Aluminum Oxide M A S A Y U K I S H I M I Z than AsV or AsIII , their reduction can produce very toxic MMAIII or DMAIII . Aluminum oxides

Sparks, Donald L.

220

Electrolytic production of high purity aluminum using ceramic inert anodes  

DOE Patents [OSTI]

A method of producing commercial purity aluminum in an electrolytic reduction cell comprising ceramic inert anodes is disclosed. The method produces aluminum having acceptable levels of Fe, Cu and Ni impurities. The ceramic inert anodes used in the process may comprise oxides containing Fe and Ni, as well as other oxides, metals and/or dopants.

Ray, Siba P. (Murrysville, PA); Liu, Xinghua (Monroeville, PA); Weirauch, Douglas A. (Murrysville, PA); DiMilia, Robert A. (Baton Rouge, LA); Dynys, Joseph M. (New Kensington, PA); Phelps, Frankie E. (Apollo, PA); LaCamera, Alfred F. (Trafford, PA)

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Electrolytic production of high purity aluminum using inert anodes  

DOE Patents [OSTI]

A method of producing commercial purity aluminum in an electrolytic reduction cell comprising inert anodes is disclosed. The method produces aluminum having acceptable levels of Fe, Cu and Ni impurities. The inert anodes used in the process preferably comprise a cermet material comprising ceramic oxide phase portions and metal phase portions.

Ray, Siba P. (Murrysville, PA); Liu, Xinghua (Monroeville, PA); Weirauch, Jr., Douglas A. (Murrysville, PA)

2001-01-01T23:59:59.000Z

222

Corrosion behavior of aluminum-lithium alloys  

SciTech Connect (OSTI)

Corrosion behavior of three aluminum-lithium (Al-Li) alloys was investigated in aerated 0.5 M sodium sulfate (Na[sub 2]SO[sub 4]), deaerated 3.5% sodium chloride (NaCl), and aerated 3.5% NaCl. Corrosion behavior of the Aluminum Association (AA) alloys 2090-T8E41 (UNS A92090, sheet), AA 8090-T851 (UNS A98090, sheet), and AA 8090-T82551 (UNS A98090, bar) was compared to behavior of the conventional AA 7075-T6 (UNS A97075, sheet). Uniform corrosion was the predominant form of attack in aerated Na[sub 2]SO[sub 4] and deaerated NaCl, although some localized attack resulted from corrosion of intermetallics on specimen surfaces. Pitting was the main form of attack in aerated NaCl. In all three media, the sheet materials corroded at a similar rate, but the bar form of AA 8090 corroded at a lower rate. Pretreatment of the alloys by immersion in a cerium (Ce) solution inhibited pitting in aerated NaCl but only for a short period.

Garrard, W.N. (Defence Science and Technology Organization, Victoria (Australia))

1994-03-01T23:59:59.000Z

223

Superconducting structure with layers of niobium nitride and aluminum nitride  

DOE Patents [OSTI]

A superconducting structure is formed by depositing alternate layers of aluminum nitride and niobium nitride on a substrate. Deposition methods include dc magnetron reactive sputtering, rf magnetron reactive sputtering, thin-film diffusion, chemical vapor deposition, and ion-beam deposition. Structures have been built with layers of niobium nitride and aluminum nitride having thicknesses in a range of 20 to 350 Angstroms. Best results have been achieved with films of niobium nitride deposited to a thickness of approximately 70 Angstroms and aluminum nitride deposited to a thickness of approximately 20 Angstroms. Such films of niobium nitride separated by a single layer of aluminum nitride are useful in forming Josephson junctions. Structures of 30 or more alternating layers of niobium nitride and aluminum nitride are useful when deposited on fixed substrates or flexible strips to form bulk superconductors for carrying electric current. They are also adaptable as voltage-controlled microwave energy sources.

Murduck, James M. (Lisle, IL); Lepetre, Yves J. (Lauris, FR); Schuller, Ivan K. (Woodridge, IL); Ketterson, John B. (Evanston, IL)

1989-01-01T23:59:59.000Z

224

Superconducting structure with layers of niobium nitride and aluminum nitride  

DOE Patents [OSTI]

A superconducting structure is formed by depositing alternate layers of aluminum nitride and niobium nitride on a substrate. Deposition methods include dc magnetron reactive sputtering, rf magnetron reactive sputtering, thin-film diffusion, chemical vapor deposition, and ion-beam deposition. Structures have been built with layers of niobium nitride and aluminum nitride having thicknesses in a range of 20 to 350 Angstroms. Best results have been achieved with films of niobium nitride deposited to a thickness of approximately 70 Angstroms and aluminum nitride deposited to a thickness of approximately 20 Angstroms. Such films of niobium nitride separated by a single layer of aluminum nitride are useful in forming Josephson junctions. Structures of 30 or more alternating layers of niobium nitride and aluminum nitride are useful when deposited on fixed substrates or flexible strips to form bulk superconductors for carrying electric current. They are also adaptable as voltage-controlled microwave energy sources. 8 figs.

Murduck, J.M.; Lepetre, Y.J.; Schuller, I.K.; Ketterson, J.B.

1989-07-04T23:59:59.000Z

225

Nanostructured lithium-aluminum alloy electrodes for lithium-ion batteries.  

SciTech Connect (OSTI)

Electrodeposited aluminum films and template-synthesized aluminum nanorods are examined as negative electrodes for lithium-ion batteries. The lithium-aluminum alloying reaction is observed electrochemically with cyclic voltammetry and galvanostatic cycling in lithium half-cells. The electrodeposition reaction is shown to have high faradaic efficiency, and electrodeposited aluminum films reach theoretical capacity for the formation of LiAl (1 Ah/g). The performance of electrodeposited aluminum films is dependent on film thickness, with thicker films exhibiting better cycling behavior. The same trend is shown for electron-beam deposited aluminum films, suggesting that aluminum film thickness is the major determinant in electrochemical performance regardless of deposition technique. Synthesis of aluminum nanorod arrays on stainless steel substrates is demonstrated using electrodeposition into anodic aluminum oxide templates followed by template dissolution. Unlike nanostructures of other lithium-alloying materials, the electrochemical performance of these aluminum nanorod arrays is worse than that of bulk aluminum.

Hudak, Nicholas S.; Huber, Dale L.

2010-12-01T23:59:59.000Z

226

Stereoscopic optical viewing system  

DOE Patents [OSTI]

An improved optical system which provides the operator a stereoscopic viewing field and depth of vision, particularly suitable for use in various machines such as electron or laser beam welding and drilling machines. The system features two separate but independently controlled optical viewing assemblies from the eyepiece to a spot directly above the working surface. Each optical assembly comprises a combination of eye pieces, turning prisms, telephoto lenses for providing magnification, achromatic imaging relay lenses and final stage pentagonal turning prisms. Adjustment for variations in distance from the turning prisms to the workpiece, necessitated by varying part sizes and configurations and by the operator's visual accuity, is provided separately for each optical assembly by means of separate manual controls at the operator console or within easy reach of the operator.

Tallman, Clifford S. (Walnut Creek, CA)

1987-01-01T23:59:59.000Z

227

Stereoscopic optical viewing system  

DOE Patents [OSTI]

An improved optical system which provides the operator with a stereoscopic viewing field and depth of vision, particularly suitable for use in various machines such as electron or laser beam welding and drilling machines. The system features two separate but independently controlled optical viewing assemblies from the eyepiece to a spot directly above the working surface. Each optical assembly comprises a combination of eye pieces, turning prisms, telephoto lenses for providing magnification, achromatic imaging relay lenses and final stage pentagonal turning prisms. Adjustment for variations in distance from the turning prisms to the workpiece, necessitated by varying part sizes and configurations and by the operator's visual accuity, is provided separately for each optical assembly by means of separate manual controls at the operator console or within easy reach of the operator.

Tallman, C.S.

1986-05-02T23:59:59.000Z

228

Diode laser welding of aluminum to steel  

SciTech Connect (OSTI)

Laser welding of dissimilar materials was carried out by using a high power diode laser to join aluminum to steel in a butt-joint configuration. During testing, the laser scan rate was changed as well as the laser power: at low values of fluence (i.e. the ratio between laser power and scan rate), poor joining was observed; instead at high values of fluence, an excess in the material melting affected the joint integrity. Between these limiting values, a good aesthetics was obtained; further investigations were carried out by means of tensile tests and SEM analyses. Unfortunately, a brittle behavior was observed for all the joints and a maximum rupture stress about 40 MPa was measured. Apart from the formation of intermeltallic phases, poor mechanical performances also depended on the chosen joining configuration, particularly because of the thickness reduction of the seam in comparison with the base material.

Santo, Loredana; Quadrini, Fabrizio; Trovalusci, Federica [University of Rome Tor Vergata, Department of Mechanical Engineering, Via del Politecnico 1, 00133 Rome (Italy)

2011-05-04T23:59:59.000Z

229

Lightweight Aluminum/Nano composites for Automotive Drive Train Applications  

SciTech Connect (OSTI)

During Phase I, we successfully processed air atomized aluminum powders via Dynamic Magnetic Compaction (DMC) pressing and subsequent sintering to produce parts with properties similar to wrought aluminum. We have also showed for the first time that aluminum powders can be processed without lubes via press and sintering to 100 % density. This will preclude a delube cycle in sintering and promote environmentally friendly P/M processing. Processing aluminum powders via press and sintering with minimum shrinkage will enable net shape fabrication. Aluminum powders processed via a conventional powder metallurgy process produce too large a shrinkage. Because of this, sinter parts have to be machined into specific net shape. This results in increased scrap and cost. Fully sintered aluminum alloy under this Phase I project has shown good particle-to-particle bonding and mechanical properties. We have also shown the feasibility of preparing nano composite powders and processing via pressing and sintering. This was accomplished by dispersing nano silicon carbide (SiC) powders into aluminum matrix comprising micron-sized powders (<100 microns) using a proprietary process. These composite powders of Al with nano SiC were processed using DMC press and sinter process to sinter density of 85-90%. The process optimization along with sintering needs to be carried out to produce full density composites.

Chelluri, Bhanumathi; Knoth, Edward A.; Schumaker, Edward J.

2012-12-14T23:59:59.000Z

230

Kinetics of aluminum fluoride complexation in acidic waters  

SciTech Connect (OSTI)

Acidic deposition has an important effect on the transport and speciation of soluble aluminum. Toxicity of aqueous aluminum seems to be strongly dependent on aluminum speciation and the presence of complexing ligands such as fluoride. A study is reported of the complex formation kinetics of AlF/sup 2 +/ in the environmentally significant pH range 2.9-4.9. The pH and temperature dependencies of the overall rate of reaction are discussed along with environmental implications for areas subjected to acidic deposition. 22 references, 6 figures, 4 tables.

Plankey, B.J.; Patterson, H.H.; Cronan, C.S.

1986-02-01T23:59:59.000Z

231

Process for strengthening aluminum based ceramics and material  

DOE Patents [OSTI]

A process for strengthening aluminum based ceramics is provided. A gaseous atmosphere consisting essentially of silicon monoxide gas is formed by exposing a source of silicon to an atmosphere consisting essentially of hydrogen and a sufficient amount of water vapor. The aluminum based ceramic is exposed to the gaseous silicon monoxide atmosphere for a period of time and at a temperature sufficient to produce a continuous, stable silicon-containing film on the surface of the aluminum based ceramic that increases the strength of the ceramic.

Moorhead, Arthur J. (Knoxville, TN); Kim, Hyoun-Ee (Seoul, KR)

2000-01-01T23:59:59.000Z

232

Photoelectron spectroscopy of boron aluminum hydride cluster anions  

SciTech Connect (OSTI)

Boron aluminum hydride clusters are studied through a synergetic combination of anion photoelectron spectroscopy and density functional theory based calculations. Boron aluminum hydride cluster anions, B{sub x}Al{sub y}H{sub z}{sup ?}, were generated in a pulsed arc cluster ionization source and identified by time-of-flight mass spectrometry. After mass selection, their photoelectron spectra were measured by a magnetic bottle-type electron energy analyzer. The resultant photoelectron spectra as well as calculations on a selected series of stoichiometries reveal significant geometrical changes upon substitution of aluminum atoms by boron atoms.

Wang, Haopeng; Zhang, Xinxing; Ko, Yeon Jae; Gantefoer, Gerd; Bowen, Kit H., E-mail: kbowen@jhu.edu, E-mail: kiran@mcneese.edu [Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States); Li, Xiang [Center for Space Science and Technology, University of MarylandBaltimore County, Baltimore, Maryland 21250 (United States)] [Center for Space Science and Technology, University of MarylandBaltimore County, Baltimore, Maryland 21250 (United States); Kiran, Boggavarapu, E-mail: kbowen@jhu.edu, E-mail: kiran@mcneese.edu [Department of Chemistry and Physics, McNeese State University, Lake Charles, Louisiana 70609 (United States)] [Department of Chemistry and Physics, McNeese State University, Lake Charles, Louisiana 70609 (United States); Kandalam, Anil K. [Department of Physics, West Chester University, West Chester, Pennsylvania 19383 (United States)] [Department of Physics, West Chester University, West Chester, Pennsylvania 19383 (United States)

2014-04-28T23:59:59.000Z

233

New Process for Grain Refinement of Aluminum. Final Report  

SciTech Connect (OSTI)

A new method of grain refining aluminum involving in-situ formation of boride nuclei in molten aluminum just prior to casting has been developed in the subject DOE program over the last thirty months by a team consisting of JDC, Inc., Alcoa Technical Center, GRAS, Inc., Touchstone Labs, and GKS Engineering Services. The Manufacturing process to make boron trichloride for grain refining is much simpler than preparing conventional grain refiners, with attendant environmental, capital, and energy savings. The manufacture of boride grain refining nuclei using the fy-Gem process avoids clusters, salt and oxide inclusions that cause quality problems in aluminum today.

Dr. Joseph A. Megy

2000-09-22T23:59:59.000Z

234

E-Print Network 3.0 - aluminum electrolytic capacitors Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

34 MMOODDUULLEE 1144 DDIISSCCRREETTEE CCOOMMPPOONNEENNTTSS Summary: include carbon film resistors, wirewound resistors, tantalum capacitors, aluminum electrolytic...

235

GENETIC TRANSFORMATION AND HYBRIDIZATION Bacterial citrate synthase expression and soil aluminum tolerance  

E-Print Network [OSTI]

GENETIC TRANSFORMATION AND HYBRIDIZATION Bacterial citrate synthase expression and soil aluminum that were more aluminum-tolerant than the non-transgenic control, confirming that citrate synthase overexpression can be a useful tool to help achieve aluminum tolerance. Keywords Acid soils Á Aluminum toxicity Á

Parrott, Wayne

236

ALUMINUM-BRIDGED BISGLYOXIMATO COBALT COMPLEXES: SYNTHESIS AND ELECTROCHEMICAL PROTON REDUCTION PROPERTIES  

E-Print Network [OSTI]

194 CHAPTER 6 ALUMINUM-BRIDGED BISGLYOXIMATO COBALT COMPLEXES: SYNTHESIS AND ELECTROCHEMICAL PROTON diglyoximato complexes connected by one or two aluminum bridges are described. The aluminum centers that the number of aluminum bridges and the nature of the substituents on the phenoxide ligands significantly

Winfree, Erik

237

Cast B2-phase iron-aluminum alloys with improved fluidity  

DOE Patents [OSTI]

Systems and methods are described for iron aluminum alloys. A composition includes iron, aluminum and manganese. A method includes providing an alloy including iron, aluminum and manganese; and processing the alloy. The systems and methods provide advantages because additions of manganese to iron aluminum alloys dramatically increase the fluidity of the alloys prior to solidification during casting.

Maziasz, Philip J. (122 Clark La., Oak Ridge, TN 37830); Paris, Alan M. (P.O. Box 64, Tarrs, PA 15688); Vought, Joseph D. (124 Cove Point Rd., Rockwood, TN 37854)

2002-01-01T23:59:59.000Z

238

Multi-view kernel construction  

E-Print Network [OSTI]

5157-z Multi-view kernel construction Virginia R. de Sa multiple different graph construction algorithms. The Ng et

Sa, Virginia R.; Gallagher, Patrick W.; Lewis, Joshua M.; Malave, Vicente L.

2010-01-01T23:59:59.000Z

239

Protective laser beam viewing device  

DOE Patents [OSTI]

A protective laser beam viewing system or device including a camera selectively sensitive to laser light wavelengths and a viewing screen receiving images from the laser sensitive camera. According to a preferred embodiment of the invention, the camera is worn on the head of the user or incorporated into a goggle-type viewing display so that it is always aimed at the area of viewing interest to the user and the viewing screen is incorporated into a video display worn as goggles over the eyes of the user.

Neil, George R.; Jordan, Kevin Carl

2012-12-18T23:59:59.000Z

240

CLASSIFICATION AND REACTIVITY OF SECONDARY ALUMINUM PRODUCTION WASTE  

E-Print Network [OSTI]

aluminum30 production process emits seventeen (17) times less pollution to the atmosphere (see Table 1 in the ASCE Journal of Hazardous, Toxic, and Radioactive Waste November 8, 2012 #12;2 Classification

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Gas-tungsten arc welding of aluminum alloys  

DOE Patents [OSTI]

A gas-tungsten arc welding method for joining together structures formed of aluminum alloy with these structures disposed contiguously to a heat-damagable substrate of a metal dissimilar to the aluminum alloy. The method of the present invention is practiced by diamond machining the fay surfaces of the aluminum alloy structures to provide a mirror finish thereon having a surface roughness in the order of about one microinch. The fay surfaces are aligned and heated sufficiently by the tungsten electrode to fuse the aluminum alloy contiguous to the fay surfaces to effect the weld joint. The heat input used to provide an oxide-free weld is significantly less than that required if the fay surfaces were prepared by using conventional chemical and mechanical practices.

Frye, Lowell D. (Kingston, TN)

1984-01-01T23:59:59.000Z

242

Gas-tungsten arc welding of aluminum alloys  

DOE Patents [OSTI]

The present invention is directed to a gas-tungsten arc welding method for joining together structures formed of aluminum alloy with these structures disposed contiguously to a heat-damagable substrate of a metal dissimilar to the aluminum alloy. The method of the present invention is practiced by diamond machining the fay surfaces of the aluminum alloy structures to profice a mirror finish thereon having a surface roughness in the order of about one microinch. The fay surface are aligned and heated sufficiently by the tungsten electrode to fuse the aluminum alloy continguous to the fay surfaces to effect the weld joint. The heat input used to provide an oxide-free weld is significantly less than that required if the fay surfaces were prepared by using conventional chemical and mechanical practices.

Frye, L.D.

1982-03-25T23:59:59.000Z

243

Ames Lab 101: BAM (Boron-Aluminum-Magnesium)  

ScienceCinema (OSTI)

Materials scientist, Bruce Cook, discusses the super hard, low friction, and lubricious alloy know as BAM (Boron-Aluminum-Magnesium). BAM was discovered by Bruce Cook and his team a

Bruce Cook

2013-06-05T23:59:59.000Z

244

Evaluation of heat stress in an aluminum smelter  

E-Print Network [OSTI]

of heat stress and heat strain was evaluated for the aluminum smelter workers at Alcoa, Rockdale Operations. Personal, environmental, and metabolic factors that contribute to heat-related illnesses were identified. The effectiveness of current...

Rose, Stacy Rahkell

1999-01-01T23:59:59.000Z

245

Ames Lab 101: BAM (Boron-Aluminum-Magnesium)  

SciTech Connect (OSTI)

Materials scientist, Bruce Cook, discusses the super hard, low friction, and lubricious alloy know as BAM (Boron-Aluminum-Magnesium). BAM was discovered by Bruce Cook and his team a

Bruce Cook

2012-08-18T23:59:59.000Z

246

aluminum alloy composite: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hydrogen A Study of Issues Related to the Use of Aluminum for On-Board Vehicular Hydrogen Storage U.S. Department of Energy Version 2 - 2010 1 12 Promoters Oxide Promoters...

247

aluminum alloy composites: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Hydrogen A Study of Issues Related to the Use of Aluminum for On-Board Vehicular Hydrogen Storage U.S. Department of Energy Version 2 - 2010 1 12 Promoters Oxide Promoters...

248

aluminum oxide thin: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

DEVICE LETTERS, VOL. 19, NO. 12, DECEMBER 1998 High-Performance Polycrystalline SiGe Thin-Film Materials Science Websites Summary: --The use of aluminum oxide as the gate...

249

aluminum nitride insulator: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

K-r grown by a modified Bridgman tech- nique,r6 Rollins, Andrew M. 27 Low-voltage organic thin film transistors with hydrophobic aluminum nitride film as gate insulator Materials...

250

Experimental and Numerical Studies of Aluminum-Alumina Composites  

E-Print Network [OSTI]

The preliminary goal of this study is to determine the effects of processing conditions, compositions and microstructural morphologies of the constituents on the physical and thermo-mechanical properties of alumina (Al_2O_3) reinforced aluminum (Al...

Gudlur, Pradeep

2013-07-22T23:59:59.000Z

251

Primary aluminum production : climate policy, emissions and costs  

E-Print Network [OSTI]

Climate policy regarding perfluorocarbons (PFCs) may have a significant influence on investment decisions in the production of primary aluminum. This work demonstrates an integrated analysis of the effectiveness and likely ...

Harnisch, Jochen.; Sue Wing, Ian.; Jacoby, Henry D.; Prinn, Ronald G.

252

Low-Cost Direct Bonded Aluminum (DBA) Substrates  

Broader source: Energy.gov (indexed) [DOE]

Low-Cost Direct Bonded Aluminum (DBA) Substrates H. -T. Lin, A. A. Wereszczak, M. L. Santella, and G. Muralidharan Oak Ridge National Laboratory (ORNL) This presentation does not...

253

aluminum ammonium sulfate: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

boric acid solutions Texas A&M University - TxSpace Summary: THE CORROSION OF ALUMINUM IN BORIC ACID SOLUTIONS A Thesis By HENRI KINSOLVING BASS, JR. Submitted to the Graduate...

254

aluminum alloy reinforced: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

David E. 32 Corrosion of aluminum alloy 2024 belonging to the 1930s in seawater environment Texas A&M University - TxSpace Summary: seawater, conserve it, and display it in...

255

Reactions of aluminum with uranium fluorides and oxyfluorides  

SciTech Connect (OSTI)

Every 30 to 40 million operating hours a destructive reaction is observed in one of the {approximately}4000 large compressors that move UF{sub 6} through the gaseous diffusion plants. Despite its infrequency, such a reaction can be costly in terms of equipment and time. Laboratory experiments reveal that the presence of moderate pressures of UF{sub 6} actually cools heated aluminum, although thermodynamic calculations indicate the potential for a 3000-4000{degrees}C temperature rise. Within a narrow and rather low (<100 torr; 1 torr = 133.322 Pa) pressure range, however, the aluminum is seen to react with sufficient heat release to soften an alumina boat. Three things must occur in order for aluminum to react vigorously with either UF{sub 6} or UO{sub 2}F{sub 2}. 1. An initiating source of heat must be provided. In the compressors, this source can be friction, permitted by disruption of the balance of the large rotating part or by creep of the aluminum during a high-temperature treatment. In the absence of this heat source, compressors have operated for 40 years in UF{sub 6} without significant reaction. 2. The film protecting the aluminum must be breached. Melting (of UF{sub 5} at 620 K or aluminum at 930 K) can cause such a breach in laboratory experiments. In contrast, holding Al samples in UF{sub 6} at 870 K for several hours produces only moderate reaction. Rubbing in the cascade can undoubtedly breach the protective film. 3. Reaction products must not build up and smother the reaction. While uranium products tend to dissolve or dissipate in molten aluminum, AIF{sub 3} shows a remarkable tendency to surround and hence protect even molten aluminum. Hence the initial temperature rise must be rapid and sufficient to move reactants into a temperature region in which products are removed from the reaction site.

Leitnaker, J.M.; Nichols, R.W.; Lankford, B.S. [Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)

1991-12-31T23:59:59.000Z

256

Microstructures and properties of aluminum die casting alloys  

SciTech Connect (OSTI)

This document provides descriptions of the microstructure of different aluminum die casting alloys and to relate the various microstructures to the alloy chemistry. It relates the microstructures of the alloys to their main engineering properties such as ultimate tensile strength, yield strength, elongation, fatigue life, impact resistance, wear resistance, hardness, thermal conductivity and electrical conductivity. Finally, it serves as a reference source for aluminum die casting alloys.

M. M. Makhlouf; D. Apelian; L. Wang

1998-10-01T23:59:59.000Z

257

Characterizing Microalgae (Nannochloris oculata) Harvesting by Aluminum Flocculation  

E-Print Network [OSTI]

Dry Weight Alum Aluminum Sulfate CF Concentration Factor CFU Culture Forming Unit DAF Dissolved Air Flotation DHA Docosahexaenoic Acid DO Dissolved Oxygen DW Dry Weight EF Electrolytic Flocculation EOM Extracellular Organic....6 Stepwise oxidation of aluminum ion species with increasing pH .............. 36 2.7 The effect of pH on zeta potenital and supernatant tubidity with the addition of 0.06 g/L Alum flocculant...

Davis, Ryan T.

2012-02-14T23:59:59.000Z

258

False color viewing device  

DOE Patents [OSTI]

This invention consists of a viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching, the user`s eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in the 500 to 520 nm and shorter than 435 nm, respectively). The goggles are useful for looking at vegetation to identify different species and for determining the health of the vegetation, and to detect some forms of camouflage.

Kronberg, J.W.

1991-05-08T23:59:59.000Z

259

False color viewing device  

DOE Patents [OSTI]

A viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching the user's eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in the 500 to 520 nm and shorter than 435 nm, respectively). The goggles are useful for looking at vegetation to identify different species and for determining the health of the vegetation, and to detect some forms of camouflage.

Kronberg, James W. (108 Independent Blvd., Aiken, SC 29801)

1992-01-01T23:59:59.000Z

260

False color viewing device  

DOE Patents [OSTI]

A viewing device for observing objects in near-infrared false-color comprising a pair of goggles with one or more filters in the apertures, and pads that engage the face for blocking stray light from the sides so that all light reaching the user's eyes come through the filters. The filters attenuate most visible light and pass near-infrared (having wavelengths longer than approximately 700 nm) and a small amount of blue-green and blue-violet (having wavelengths in the 500 to 520 nm and shorter than 435 nm, respectively). The goggles are useful for looking at vegetation to identify different species and for determining the health of the vegetation, and to detect some forms of camouflage. 7 figs.

Kronberg, J.W.

1992-10-20T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Aluminum-lithium alloys -- the next generation  

SciTech Connect (OSTI)

The advantages of aluminum-lithium (Al-Li) alloys, such as low density and high modulus, have been well documented in the last 15 years, but their impact on the aerospace market has fallen short of initial expectations. However, vacuum refining processes have now been developed at Comalco Aluminium Ltd., Melbourne, Australia, that provide improved mechanical properties. In addition, the patented technology allows higher levels of lithium, which results in higher stiffness and lower densities. For example, alloys with 3.3% lithium and very low amounts of hydrogen and alkali metal impurities demonstrate good mechanical properties. It also exhibits good weldability, as shown in results of varestraint'' testing, which evaluates the tendency to crack during welding. The high purity of these VacLite alloys ensures that grain boundary fracture is minimized, and cleavage fracture is reduced almost to the limit of detectability. Furthermore, advanced vacuum techniques using electron beam melting at 10[sup [minus]5] torr may eventually reduce impurities to a level at which fracture occurs only in a ductile, transgranular manner.

Webster, D. (Advanced Material Development, Saratoga, CA (United States))

1994-05-01T23:59:59.000Z

262

Corrosion of aluminum alloys in a reactor disassembly basin  

SciTech Connect (OSTI)

This document discusses storage of aluminum clad fuel and target tubes of the Mark 22 assembly takes place in the concrete-lined, light-water-filled, disassembly basins located within each reactor area at the Savannah River Site (SRS). A corrosion test program has been conducted in the K-Reactor disassembly basin to assess the storage performance of the assemblies and other aluminum clad components in the current basin environment. Aluminum clad alloys cut from the ends of actual fuel and target tubes were originally placed in the disassembly water basin in December 1991. After time intervals varying from 45--182 days, the components were removed from the basin, photographed, and evaluated metallographically for corrosion performance. Results indicated that pitting of the 8001 aluminum fuel clad alloy exceeded the 30-mil (0.076 cm) cladding thickness within the 45-day exposure period. Pitting of the 1100 aluminum target clad alloy exceeded the 30-mil (0.076 cm) clad thickness in 107--182 days exposure. The existing basin water chemistry is within limits established during early site operations. Impurities such as Cl{sup {minus}}, NO{sub 3}{sup {minus}} and SO{sub 4}{sup {minus}} are controlled to the parts per million level and basin water conductivity is currently 170--190 {mu}mho/cm. The test program has demonstrated that the basin water is aggressive to the aluminum components at these levels. Other storage basins at SRS and around the US have successfully stored aluminum components for greater than ten years without pitting corrosion. These basins have impurity levels controlled to the parts per billion level (1000X lower) and conductivity less than 1.0 {mu}mho/cm.

Howell, J.P.; Zapp, P.E.; Nelson, D.Z.

1992-12-01T23:59:59.000Z

263

Interfacial tension between aluminum and chloride-fluoride melts  

SciTech Connect (OSTI)

Scrap and recycled aluminum have to be remelted and refined before being made into useful new products. This often involves melting the aluminum under a molten salt cover in order to prevent oxidation and to enhance the coalescence and recovery of the molten metal. A technique was developed for the measurement of the interfacial tension between liquid metals and molten salts at elevated temperatures. The technique is based on the measurement of the capillary depression occurring when a capillary, which is moved vertically down through the molten salt layer, passes through the salt/metal interface. The depression is measured by simultaneous video recording of the immersion height of the alumina capillary and the position of a liquid meniscus in a horizontal tube connected to the alumina capillary. The interfacial tension was measured for (a) aluminum and an equimolar melt of NaCl + KCl with several salt additions at 1,000 K, (b) aluminum and NaCl + NaF at 1,123 K, and (c) aluminum and NaCl + KF at 1,123 K. It was found that the interfacial tension decreases with increasing amount of NaF, increases with the increasing amount of MgCl{sub 2} additions, remains unchanged with AlF{sub 3} additions, and slightly decreases with the addition of MgF{sub 2} and Na{sub 3}AlF{sub 6}.

Silny, A. [Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Inorganic Chemistry] [Slovak Academy of Sciences, Bratislava (Slovakia). Inst. of Inorganic Chemistry; Utigard, T.A. [Univ. of Toronto, Ontario (Canada). Dept. of Metallurgy and Materials Science] [Univ. of Toronto, Ontario (Canada). Dept. of Metallurgy and Materials Science

1996-11-01T23:59:59.000Z

264

Aluminum-Enhanced Underwater Electrical Discharges for Steam Explosion Triggering  

SciTech Connect (OSTI)

For a number of years, we have been initiating steam explosions of single drops of molten materials with pressure and flow (bubble growth) transients generated by discharging a capacitor bank through gold bridgewires placed underwater. Recent experimental and theoretical advances in the field of steam explosions, however, have made it important to substantially increase these relatively mild transients in water without using high explosives, if possible. To do this with the same capacitor bank, we have discharged similar energies through tiny strips of aluminum foil submerged in water. By replacing the gold wires with the aluminum strips, we were able to add the energy of the aluminum-water combustion to that normally deposited electrically by the bridgewire explosion in water. The chemical enhancement of the explosive characteristics of the discharges was substantial: when the same electrical energies were discharged through the aluminum strips, peak pressures increased as much as 12-fold and maximum bubble volumes as much as 5-fold above those generated with the gold wires. For given weights of aluminum, the magnitudes of both parameters appeared to exceed those produced by the underwater explosion of equivalent weights of high explosives.

HOGELAND, STEVE R.; NELSON, LLOYD S.; ROTH, THOMAS CHRISTOPHER

1999-07-01T23:59:59.000Z

265

REAL TIME ULTRASONIC ALUMINUM SPOT WELD MONITORING SYSTEM  

SciTech Connect (OSTI)

Aluminum alloys pose several properties that make them one of the most popular engineering materials: they have excellent corrosion resistance, and high weight-to-strength ratio. Resistance spot welding of aluminum alloys is widely used today but oxide film and aluminum thermal and electrical properties make spot welding a difficult task. Electrode degradation due to pitting, alloying and mushrooming decreases the weld quality and adjustment of parameters like current and force is required. To realize these adjustments and ensure weld quality, a tool to measure weld quality in real time is required. In this paper, a real time ultrasonic non-destructive evaluation system for aluminum spot welds is presented. The system is able to monitor nugget growth while the spot weld is being made. This is achieved by interpreting the echoes of an ultrasound transducer located in one of the welding electrodes. The transducer receives and transmits an ultrasound signal at different times during the welding cycle. Valuable information of the weld quality is embedded in this signal. The system is able to determine the weld nugget diameter by measuring the delays of the ultrasound signals received during the complete welding cycle. The article presents the system performance on aluminum alloy AA6022.

Regalado, W. Perez; Chertov, A. M.; Maev, R. Gr. [Institute for Diagnostic Imaging Research, Physics Department, University of Windsor, 292 Essex Hall, 401 Sunset Ave. N9B 3P4 Windsor, Ontario (Canada)

2010-02-22T23:59:59.000Z

266

Hermetic aluminum radio frequency interconnection and method for making  

DOE Patents [OSTI]

The present invention provides a light-weight, hermetic coaxial radio-frequency (RF) interconnection having an electrically conductive outer housing made of aluminum or an aluminum alloy, a central electrical conductor made of ferrous or non-ferrous material, and a cylinder of dielectric material comprising a low-melting-temperature, high-thermal-expansion aluminophosphate glass composition for hermetically sealing between the aluminum-alloy outer housing and the ferrous or non-ferrous center conductor. The entire RF interconnection assembly is made permanently hermetic by thermally fusing the center conductor, glass, and housing concurrently by bringing the glass to the melt point by way of exposure to an atmospheric temperature sufficient to melt the glass, less than 540.degree. C., but that does not melt the center conductor or the outer aluminum or aluminum alloy housing. The composition of the glass used is controlled to provide a suitable low dielectric constant so that an appropriate electrical characteristic impedance, for example 50 ohms, can be achieved for an electrical interconnection that performs well at high radio frequencies and also provides an interconnection maintaining a relatively small physical size.

Kilgo, Riley D. (Albuquerque, NM); Kovacic, Larry (Albuquerque, NM); Brow, Richard K. (Rolla, MO)

2000-01-01T23:59:59.000Z

267

Reduction of Perchlorate and Nitrate by Aluminum Activated by pH Change and Electrochemically Induced Pitting Corrosion.  

E-Print Network [OSTI]

, pitting corrosion to remove the passivating oxide layer and expose the underlying, thermodynamically reactive, zero-valent aluminum. A partially oxidized species of aluminum, like monovalent aluminum, is believed to bring about the reduction of perchlorate...

Raut Desai, Aditya B.

2011-08-08T23:59:59.000Z

268

Effects of Nanoscale Structure on the Magnetism and Transport Properties of Chromium and Chromium-Aluminum Alloys  

E-Print Network [OSTI]

J. L. Murray. The Al-Cr (aluminum-chromium) system. Joural3d transition elements and aluminum. Journal of Physics andof Chromium and Chromium-Aluminum Alloys by Zoe Austin

Boekelheide, Zoe Austin

2011-01-01T23:59:59.000Z

269

COMPILATION OF LABORATORY SCALE ALUMINUM WASH AND LEACH REPORT RESULTS  

SciTech Connect (OSTI)

This report compiles and analyzes all known wash and caustic leach laboratory studies. As further data is produced, this report will be updated. Included are aluminum mineralogical analysis results as well as a summation of the wash and leach procedures and results. Of the 177 underground storage tanks at Hanford, information was only available for five individual double-shell tanks, forty-one individual single-shell tanks (e.g. thirty-nine 100 series and two 200 series tanks), and twelve grouped tank wastes. Seven of the individual single-shell tank studies provided data for the percent of aluminum removal as a function of time for various caustic concentrations and leaching temperatures. It was determined that in most cases increased leaching temperature, caustic concentration, and leaching time leads to increased dissolution of leachable aluminum solids.

HARRINGTON SJ

2011-01-06T23:59:59.000Z

270

Reactive self-heating model of aluminum spherical nanoparticles  

E-Print Network [OSTI]

Aluminum-oxygen reaction is important in many highly energetic, high pressure generating systems. Recent experiments with nanostructured thermites suggest that oxidation of aluminum nanoparticles occurs in a few microseconds. Such rapid reaction cannot be explained by a conventional diffusion-based mechanism. We present a rapid oxidation model of a spherical aluminum nanoparticle, using Cabrera-Mott moving boundary mechanism, and taking self-heating into account. In our model, electric potential solves the nonlinear Poisson equation. In contrast with the Coulomb potential, a "double-layer" type solution for the potential and self-heating leads to enhanced oxidation rates. At maximal reaction temperature of 2000 C, our model predicts overall oxidation time scale in microseconds range, in agreement with experimental evidence.

Karen S. Martirosyan; Maxim Zyskin

2012-12-17T23:59:59.000Z

271

MICROSTRUCTURE EVOLUTION MODELING FOR SOLUTION TREATMENT OF ALUMINUM ALLOYS  

SciTech Connect (OSTI)

The microstructure evolution during solution treatment plays an important role in mechanical properties of heat-treated aluminum alloys. In this paper, models were reviewed that can predict the microstructure evolution during the solutionizing process of the aging heat treatment of aluminum alloys. The dissolution of Mg2Si particles has been modeled as a diffusion process of Mg in the -Al matrix. The evolution of volumetric fraction of fragmented silicon as a function of time and temperature was also considered. The growth and coarsening of silicon particles during the heat treatment was considered. It was found that constitutive equations and required property data for most of the phenomena that need to be considered are available. Several model parameters that need to be obtained from material characterization were identified. Pending the availability of these model parameters, this comprehensive model can be used to describe the microstructure evolution of aluminum alloys in order to optimize the solutionizing heat treatment for energy savings.

Yin, Hebi [ORNL; Sabau, Adrian S [ORNL; Skszek, Timothy [Vehma International of American, Inc.; Niu, X [Magna Cosma International, Promatek Research Centre

2013-01-01T23:59:59.000Z

272

E-Print Network 3.0 - aluminum oxide membrane-assisted Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: Aluminum Particle Combustion Aluminum oxide cap formed under the effect of surface tension Oxidized... products consists of gas-phase AlxOy such as AlO, and Al2O...

273

E-Print Network 3.0 - aluminum oxide Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: Aluminum Particle Combustion Aluminum oxide cap formed under the effect of surface tension Oxidized... products consists of gas-phase AlxOy such as AlO, and Al2O...

274

E-Print Network 3.0 - aluminum phosphide pc Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

HCP CCP PO phosphorus monoxide molecular oxygen Aluminum oxide H2 H2 O H2 S CSi carbon... isocyanide HCl NaCl NaCN N2 O KCl AlCl aluminum monochloride NH2 amidyl radical*...

275

Effects of Cu Content and Preaging on Precipitation Characteristics in Aluminum Alloy 6022  

E-Print Network [OSTI]

Effects of Cu Content and Preaging on Precipitation Characteristics in Aluminum Alloy 6022 W and artificial aging response in aluminum alloy 6022 were investigated using transmission electron microscopy automotive paint bake condition, suitable preaging treatments were found to significantly reduce

Laughlin, David E.

276

E-Print Network 3.0 - aluminum-lithium alloys processed Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aluminum-lithium alloys, there is a precipitation of metastable, coherent, L1... and fracture toughness of aluminum-lithium alloys can be improved by the addition of zirconium...

277

E-Print Network 3.0 - aluminum ions induce Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: aluminum ions induce Page: << < 1 2 3 4 5 > >> 1 Reaction of Aluminum with Water to Produce...

278

E-Print Network 3.0 - a356 aluminum alloy Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aluminum alloy Search Powered by Explorit Topic List Advanced Search Sample search results for: a356 aluminum alloy Page: << < 1 2 3 4 5 > >> 1 JOURNAL DE PHYSIQUE Colloque C3,...

279

Solid-State NMR Spectroscopic Study of Phosphate Sorption Mechanisms on Aluminum (Hydr)oxides  

E-Print Network [OSTI]

Solid-State NMR Spectroscopic Study of Phosphate Sorption Mechanisms on Aluminum (Hydr)oxides Wei the mechanism of phosphate sorption on aluminum hydroxides under different environ- mental conditions, including

Sparks, Donald L.

280

The role of demand uncertainty in materials selection : a case study on aluminum recycling  

E-Print Network [OSTI]

Aluminum is a versatile material that is used frequently in transportation and packaging, two industries with substantial recent growth. The increase in demand for aluminum, however, has outpaced the growth of primary ...

Dabbas, Hashem H

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Evaluation of Corrosion of Aluminum Based Reactor Fuel Cladding Materials During Dry Storage  

SciTech Connect (OSTI)

This report provides an evaluation of the corrosion behavior of aluminum cladding alloys and aluminum-uranium alloys at conditions relevant to dry storage. The details of the corrosion program are described and the results to date are discussed.

Peacock, H.B. Jr.

1999-10-21T23:59:59.000Z

282

E-Print Network 3.0 - aluminum gas metal Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

about 10 ppm aluminum. The basis for inclusion of aluminum and other trace metals (e.g.. copper. manga... energy-intensive products such as am- monia or ... Source: NOAA Marine...

283

TANK 12 SLUDGE CHARACTERIZATION AND ALUMINUM DISSOLUTION DEMONSTRATION  

SciTech Connect (OSTI)

A 3-L sludge slurry sample from Tank 12 was characterized and then processed through an aluminum dissolution demonstration. The dominant constituent of the sludge was found to be aluminum in the form of boehmite. The iron content was minor, about one-tenth that of the aluminum. The salt content of the supernatant was relatively high, with a sodium concentration of {approx}7 M. Due to these characteristics, the yield stress and plastic viscosity of the unprocessed slurry were relatively high (19 Pa and 27 cP), and the settling rate of the sludge was relatively low ({approx}20% settling over a two and a half week period). Prior to performing aluminum dissolution, plutonium and gadolinium were added to the slurry to simulate receipt of plutonium waste from H-Canyon. Aluminum dissolution was performed over a 26 day period at a temperature of 65 C. Approximately 60% of the insoluble aluminum dissolved during the demonstration, with the rate of dissolution slowing significantly by the end of the demonstration period. In contrast, approximately 20% of the plutonium and less than 1% of the gadolinium partitioned to the liquid phase. However, about a third of the liquid phase plutonium became solubilized prior to the dissolution period, when the H-Canyon plutonium/gadolinium simulant was added to the Tank 12 slurry. Quantification of iron dissolution was less clear, but appeared to be on the order of 1% based on the majority of data (a minor portion of the data suggested iron dissolution could be as high as 10%). The yield stress of the post-dissolution slurry (2.5 Pa) was an order of magnitude lower than the initial slurry, due most likely to the reduced insoluble solids content caused by aluminum dissolution. In contrast, the plastic viscosity remained unchanged (27 cP). The settling rate of the post-dissolution slurry was higher than the initial slurry, but still relatively low compared to settling of typical high iron content/low salt content sludges. Approximately 40% of the post-dissolution sludge settled over a three week period. The corresponding volume of supernatant that was decanted from the waste was approximately 35% of the total waste volume. The decanted supernatant contained approximately one-third of the dissolved aluminum and exhibited a mild greenish-grey hue.

Reboul, S; Michael Hay, M; Kristine Zeigler, K; Michael Stone, M

2009-03-25T23:59:59.000Z

284

Tank 12 Sludge Characterization and Aluminum Dissolution Demonstration  

SciTech Connect (OSTI)

A 3-L sludge slurry sample from Tank 12 was characterized and then processed through an aluminum dissolution demonstration. The dominant constituent of the sludge was found to be aluminum in the form of boehmite. The iron content was minor, about one-tenth that of the aluminum. The salt content of the supernatant was relatively high, with a sodium concentration of {approx}7 M. Due to these characteristics, the yield stress and plastic viscosity of the unprocessed slurry were relatively high (19 Pa and 27 cP), and the settling rate of the sludge was relatively low ({approx}20% settling over a two and a half week period). Prior to performing aluminum dissolution, plutonium and gadolinium were added to the slurry to simulate receipt of plutonium waste from H-Canyon. Aluminum dissolution was performed over a 26 day period at a temperature of 65 C. Approximately 60% of the insoluble aluminum dissolved during the demonstration, with the rate of dissolution slowing significantly by the end of the demonstration period. In contrast, approximately 20% of the plutonium and less than 1% of the gadolinium partitioned to the liquid phase. However, about a third of the liquid phase plutonium became solubilized prior to the dissolution period, when the H-Canyon plutonium/gadolinium simulant was added to the Tank 12 slurry. Quantification of iron dissolution was less clear, but appeared to be on the order of 1% based on the majority of data (a minor portion of the data suggested iron dissolution could be as high as 10%). The yield stress of the post-dissolution slurry (2.5 Pa) was an order of magnitude lower than the initial slurry, due most likely to the reduced insoluble solids content caused by aluminum dissolution. In contrast, the plastic viscosity remained unchanged (27 cP). The settling rate of the post-dissolution slurry was higher than the initial slurry, but still relatively low compared to settling of typical high iron content/low salt content sludges. Approximately 40% of the post-dissolution sludge settled over a three week period. The corresponding volume of supernatant that was decanted from the waste was approximately 35% of the total waste volume. The decanted supernatant contained approximately one-third of the dissolved aluminum and exhibited a mild greenish-grey hue.

Reboul, S.; Hay, M.; Zeigler, K; Stone, M.

2010-05-05T23:59:59.000Z

285

Rapid substitution of gold for aluminum metallization on integrated circuits  

SciTech Connect (OSTI)

A rapid procedure for substitution of gold for aluminum metallization on integrated solid-state circuits, such as solid-state chemical multisensor chips, has been developed. The final product consists of original aluminum overlaid with nickel and gold, both deposited by an electroless process. The final metallization is chemically inert and the resistance of the contacts remains ohmic and unchanged from the original value. The substitution can be performed either at the wafer or at the chip level. After the plasma etching, the metallization process takes only 25 min.

Krasopoulos, A.V. [Washington State Univ., Pullman, WA (United States). Dept. of Chemical Engineering; Li, J.; Josowicz, M.; Janata, J. [Pacific Northwest National Lab., Richland, WA (United States)

1997-03-01T23:59:59.000Z

286

Impact of recent energy legislation on the aluminum industry  

SciTech Connect (OSTI)

This report examines the aluminum industry's technology in energy use and emissions control. Data on consumption and pollution levels are presented. A history of the aluminum industry in the Pacific Northwest, its role in providing power reserves, and how that role fits into the present power situation are given. The Northwest Power Act, the rates the industry will probably pay as a result of the Act, the implications of those rates to the industry, as well as the availability of federal power to the industry are discussed. Finally, the Act's effects on the relative competitiveness of the industry in both domestic and world markets are examined.

Edelson, E.; Emery, J.G.; Hopp, W.J.; Kretz, A.L.

1981-06-01T23:59:59.000Z

287

Low temperature aluminum reduction cell using hollow cathode  

DOE Patents [OSTI]

A method of producing aluminum in an electrolytic cell containing alumina dissolved in an electrolyte. A plurality of non-consumable anodes are disposed substantially vertically in the electrolyte along with a plurality of monolithic hollow cathodes. Each cathode has a top and bottom and the cathodes are disposed vertically in the electrolyte and the anodes and the cathodes are arranged in alternating relationship. Each of the cathodes is comprised of a first side facing a first opposing anode and a second side facing a second opposing anode. The first and second sides are joined by ends to form a reservoir in the hollow cathode for collecting aluminum therein deposited at the cathode.

Brown, Craig W. (Seattle, WA); Frizzle, Patrick B. (Seattle, WA)

2002-08-20T23:59:59.000Z

288

Electrolytic Cell For Production Of Aluminum Employing Planar Anodes.  

DOE Patents [OSTI]

A method of producing aluminum in an electrolytic cell containing alumina dissolved in an electrolyte, the method comprising providing a molten salt electrolyte having alumina dissolved therein in an electrolytic cell. A plurality of anodes and cathodes having planar surfaces are disposed in a generally vertical orientation in the electrolyte, the anodes and cathodes arranged in alternating or interleaving relationship to provide anode planar surfaces disposed opposite cathode planar surfaces, the anode comprised of carbon. Electric current is passed through anodes and through the electrolyte to the cathodes depositing aluminum at the cathodes and forming carbon containing gas at the anodes.

Barnett, Robert J. (Goldendale, WA); Mezner, Michael B. (Sandy, OR); Bradford, Donald R (Underwood, WA)

2004-10-05T23:59:59.000Z

289

E-Print Network 3.0 - aluminum hlw glasses Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Recycling one aluminum can saves the equivalent energy... CANSGLASSPLASTICCANSGLASSPLASTIC Designated central bins ... Source: Grzybowski, Bartosz A. - Departments of...

290

SciTech Connect: The determination of aluminum by atomic absorption...  

Office of Scientific and Technical Information (OSTI)

Language: English Subject: CHEMISTRY; ABSORPTION; ALUMINUM; CEMENTS; CHLORIDES; COMBUSTION; PHOTOMETRY; QUANTITATIVE ANALYSIS; SILICON OXIDES; SOLUTIONS; SPECTROSCOPY; STEELS...

291

Joining of highly aluminum-doped lanthanum strontium manganese oxide with tetragonal zirconia by plastic deformation  

E-Print Network [OSTI]

Joining of highly aluminum-doped lanthanum strontium manganese oxide with tetragonal zirconia February 2008; accepted 24 March 2008 Abstract Aluminum-doped lanthanum strontium manganese oxide, La0.77Sr at the interface. © 2008 Elsevier B.V. All rights reserved. Keywords: Lanthanum strontium aluminum manganese oxide

Dutta, Prabir K.

292

PRECIPITATION HARDENING IN ALUMINUM ALLOY 6022 W.F. Miao and D.E. Laughlin  

E-Print Network [OSTI]

) (Accepted in revised form January 21, 1999) Introduction The use of aluminum alloys for automotive bodyPRECIPITATION HARDENING IN ALUMINUM ALLOY 6022 W.F. Miao and D.E. Laughlin Department of Materials behavior in aluminum alloy 6022. Experimental Procedure The composition of the 6022 alloy used

Laughlin, David E.

293

By Patricia A. Plunkert Domestic primary aluminum production increased slightly in  

E-Print Network [OSTI]

of primary metal produced domestically in 1995 was Voluntary Aluminum Industrial Partnership (VAIP) committed metal came from new (manufacturing) scrap and 47% from old scrap (discarded aluminum products, and Washington conjunction with the domestic primary aluminum industry, accounted for 36% of the production

294

Thermochemistry of Aluminum Species for Combustion Modeling from Ab Initio Molecular Orbital Calculations  

E-Print Network [OSTI]

Thermochemistry of Aluminum Species for Combustion Modeling from Ab Initio Molecular Orbital initio methods for computational thermochemistry have been applied to aluminum compounds expected to be present during combustion of aluminum particles. The computed enthalpies of formation at 298.15 K agree

Swihart, Mark T.

295

AN ELECTROANALYTICAL STUDY OF ELECTRODE REACTIONS ON CARBON ANODES DURING ELECTROLYTIC PRODUCTION OF ALUMINUM  

E-Print Network [OSTI]

OF ALUMINUM Hongmin Zhu and Donald R. Sadoway Department of Materials Science and Engineering Massachusetts production of aluminum the anodic reactions have been studied on carbon microelectrodes by voltammetry electrolysis in a laboratory-scale aluminum reduction cell. When the voltage exceeds a critical value (about 3

Sadoway, Donald Robert

296

Modeling the Effect of Finite-Rate Hydrogen Diffusion on Porosity Formation in Aluminum Alloys  

E-Print Network [OSTI]

Modeling the Effect of Finite-Rate Hydrogen Diffusion on Porosity Formation in Aluminum Alloys KENT of hydrogen in the melt is developed to predict pore formation during the solidification of aluminum alloys by Lee et al.[3] Recent examples of porosity models for aluminum alloy castings, including the effect

Beckermann, Christoph

297

Aluminum plasma immersion ion implantation in polymers M. Ueda a,*, I.H. Tan a  

E-Print Network [OSTI]

Aluminum plasma immersion ion implantation in polymers M. Ueda a,*, I.H. Tan a , R.S. Dallaqua on the implantation of Kapton, Mylar, polypropylene and polyethylene samples with aluminum ions at 2.5, 5 and 7 k doses of (1­3) ? 1016 cm?2 , with most of the aluminum concentrated on the surface. This is probably due

298

Phosphate and Organic Acids as Competing Sorbates on Amorphous Aluminum Oxide. (3791)  

E-Print Network [OSTI]

Phosphate and Organic Acids as Competing Sorbates on Amorphous Aluminum Oxide. (3791) Authors: K sorption of P to amorphous aluminum oxides. Alum initially decreases litter pH, so the stability of P was employed to investigate the adsorption of phosphate and oxalate, to synthetic amorphous aluminum hydroxide

Sparks, Donald L.

299

Gallium/aluminum nanocomposite material for nonlinear optics and nonlinear plasmonics  

E-Print Network [OSTI]

Gallium/aluminum nanocomposite material for nonlinear optics and nonlinear plasmonics A. V penetration of gallium into an aluminum film. These composite films form mirrorlike interfaces with silica optics and active plasmonics. The material is a polycrystalline aluminum film on a silica sub- strate

Zheludev, Nikolay

300

Comparison of constitutive laws on the modeling of thermo-viscoplastic behaviour of an aluminum alloy  

E-Print Network [OSTI]

Comparison of constitutive laws on the modeling of thermo-viscoplastic behaviour of an aluminum.guines@insa-rennes.fr, d email: shdgj@sdu.edu.cn Keywords: Hardening law; Aluminum alloy; Flow stress; Temperature; Strain, the innovative lightweight materials, such as aluminum alloys, have been widely adopted in the automotive

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

One step process for producing dense aluminum nitride and composites thereof  

DOE Patents [OSTI]

A one step combustion process for the synthesis of dense aluminum nitride compositions is disclosed. The process comprises igniting pure aluminum powder in a nitrogen atmosphere at a pressure of about 1000 atmospheres or higher. The process enables the production of aluminum nitride bodies to be formed directly in a mold of any desired shape.

Holt, J. Birch (San Jose, CA); Kingman, Donald D. (Danville, CA); Bianchini, Gregory M. (Livermore, CA)

1989-01-01T23:59:59.000Z

302

Chemical Preparation of Aluminum Borate Whiskers I. Erkin GNENLI and A. Cneyt TAS  

E-Print Network [OSTI]

Chemical Preparation of Aluminum Borate Whiskers I. Erkin G?NENLI and A. Cüneyt TAS Department of Metallurgical and Materials Engineering, Middle East Technical University, Ankara 06531, Turkey Aluminum borate chemicals of aluminum sulphate and boric acid. The synthesis temperature of 1075°C was found

Tas, A. Cuneyt

303

Mechanism of Aluminum Soption on Birnessite: Influences on Chromium (ID.) Oxidation  

E-Print Network [OSTI]

Mechanism of Aluminum Soption on Birnessite: Influences on Chromium (ID.) Oxidation Scott E and their effects on Cr(Ill) oxidation. Aluminum had no effect on Cr(III) oxidation at pH values less than 4 electron microscopy revealed that an aluminum hydroxide surface precipitate formed on birnessite at pH ~ 4

Sparks, Donald L.

304

REAR-SIDE POINT-CONTACTS BY INLINE THERMAL EVAPORATION OF ALUMINUM Christoph Mader  

E-Print Network [OSTI]

REAR-SIDE POINT-CONTACTS BY INLINE THERMAL EVAPORATION OF ALUMINUM Christoph Mader 1 , Jens Müller of point-contacted aluminum rear-sides for silicon solar cells that are metalized by inline thermal evaporation. We deposit aluminum layers of 2 µm thickness at dynamic deposition rates of 1.0, 2.9 and 5.0 µm

305

Passivation of Aluminum in Lithium-ion Battery Electrolytes with LiBOB  

E-Print Network [OSTI]

pitting corrosion of aluminum in 1M LiTFSI. The protectiveAnodic Polarization of Aluminum in 1:1 EC+DMC with 1M LiBOBdeposited thin film of aluminum in 1:1 EC+DMC with 1M LiBOB.

Zhang, Xueyuan; Devine, Thomas M.

2008-01-01T23:59:59.000Z

306

ccsd-00002835,version2-14Sep2004 Light scattering from cold rolled aluminum surfaces  

E-Print Network [OSTI]

ccsd-00002835,version2-14Sep2004 Light scattering from cold rolled aluminum surfaces Damien experimental light scattering measurements from aluminum surfaces obtained by cold rolling. We show that our-polarized electromagnetic wave (632.8 nanometers) from a rough aluminum alloy plate (Al 5182). The latter was obtained

Boyer, Edmond

307

Mechanism of Aluminum Soption on Bimessite: Influences on Chromium (HI) Oxidation  

E-Print Network [OSTI]

Mechanism of Aluminum Soption on Bimessite: Influences on Chromium (HI) Oxidation Scott E. Fendorfl(III) oxidation. Aluminum had no effect on Cr(III) oxidation at pH values less than 4. However, at pH values that an aluminum hydroxide surface precipitate formed on bimessite at pH > 4, thus accounting for the observed

Sparks, Donald L.

308

Role of Surface Precipitation in Copper Sorption by the Hydrous Oxides of Iron and Aluminum  

E-Print Network [OSTI]

Role of Surface Precipitation in Copper Sorption by the Hydrous Oxides of Iron and Aluminum K. G precipitation; sorption; isotherms; X-ray diffraction; hydrous iron oxide; hydrous aluminum oxide; copper. INTRODUCTION Hydrous oxides of iron (HFO) and aluminum (HAO) are important mineral components of natural

Chorover, Jon

309

A thermomechanical study of the effects of mold topography on the solidification of Aluminum alloys  

E-Print Network [OSTI]

1 A thermomechanical study of the effects of mold topography on the solidification of Aluminum-3801, USA A thermomechanical study of the effects of mold topography on the solidification of Aluminum deformation and heat transfer at the mold/solid-shell interface during the early stages of Aluminum

Zabaras, Nicholas J.

310

A perturbation analysis of the unstable plastic flow pattern evolution in an aluminum alloy  

E-Print Network [OSTI]

A perturbation analysis of the unstable plastic flow pattern evolution in an aluminum alloy Seung Abstract In the tensile loading of sheet metals made from some polycrystalline aluminum alloys, a single in the uniaxial tension of polycrystalline aluminum alloys with periodic stress relaxations depends

Tong, Wei

311

Rapid communication Quantication of ve-and six-coordinated aluminum ions in  

E-Print Network [OSTI]

Rapid communication Quanti®cation of ®ve- and six-coordinated aluminum ions in aluminosilicate, Stanford, CA 94305-2115, USA Received 5 May 2000 Abstract Aluminum cation sites with ®ve (5 Al) or six (6 in a calcium-aluminosilicate glass without excess aluminum over charge-balancing cations, and quantify small

Puglisi, Joseph

312

Vacancy clustering and prismatic dislocation loop formation in aluminum Vikram Gavini  

E-Print Network [OSTI]

Vacancy clustering and prismatic dislocation loop formation in aluminum Vikram Gavini Department of atoms to address this problem in aluminum. Our results show that there is a cascade of larger and larger, calculations for aluminum using quan- tum mechanical density-functional theory [9, 10] show that di

Nemat-Nasser, Sia

313

ENS'07 Paris, France, 3-4 December 2007 MEASUREMENTS OF THERMAL CONDUCTIVITY OF ALUMINUM NANOPOWDERS  

E-Print Network [OSTI]

ENS'07 Paris, France, 3-4 December 2007 MEASUREMENTS OF THERMAL CONDUCTIVITY OF ALUMINUM spectroscopy (PAS) as a powerful technique to estimate thermal properties of aluminum nanosized powders. Aluminum nanopowders are considered as effective constituents of energetic materials. Thermal conductivity

Paris-Sud XI, Université de

314

The Development of ALADIN,an Expert System for Aluminum Alloy Design  

E-Print Network [OSTI]

329 The Development of ALADIN,an Expert System for Aluminum Alloy Design Martha L. Farinacci-Mel- lon Unit,., Pittsburgh, PA, USA 1. Introduction ALADIN (ALuminum Alloy Design INventor) is an expert of new aluminum alloys. The system is a hybrid of several artificial intelligence techniques. Declarative

Fox, Mark S.

315

Start | Author Index 742-1 Methylarsenate Sorption to Aluminum Oxide.  

E-Print Network [OSTI]

Start | Author Index 742-1 Methylarsenate Sorption to Aluminum Oxide. Wednesday, 8 October 2008: 1 is to investigate MMA and DMA sorption behavior to aluminum oxide employing a multi-scale approach. Macroscopic) spectroscopic studies to examine sorption complex formation between methylarsenate and aluminum oxide. See more

Sparks, Donald L.

316

ICDERS July 2429, 2011 Irvine, USA An Empirical Model for the Ignition of Aluminum Particle  

E-Print Network [OSTI]

23rd ICDERS July 24­29, 2011 Irvine, USA An Empirical Model for the Ignition of Aluminum Particle of aluminum particle clouds is developed and applied to the study of particle ignition and combustion behavior as cloud concentration effects on ignition. The total mass of aluminum that burns is found to depend

317

Incorporation of Short-Lived Be in a Calcium-Aluminum  

E-Print Network [OSTI]

Incorporation of Short-Lived 10 Be in a Calcium-Aluminum­ Rich Inclusion from the Allende Meteorite Kevin D. McKeegan,1 * Marc Chaussidon,2 Franc¸ois Robert3 Enrichments in boron-10/boron-11 in a calcium-aluminum canonical abundance of aluminum-26 may still require seeding of the solar system by radioactive stellar

318

Combustion characteristics of fuel droplets with addition of nano and micron-sized aluminum particles  

E-Print Network [OSTI]

Combustion characteristics of fuel droplets with addition of nano and micron-sized aluminum Aluminum nanoparticles Microexplosion Particle aggregation a b s t r a c t The burning characteristics of fuel droplets containing nano and micron-sized aluminum particles were investigated. Particle size

Qiao, Li

319

Molecular dynamics simulations of the nano-scale room-temperature oxidation of aluminum single crystals  

E-Print Network [OSTI]

Molecular dynamics simulations of the nano-scale room-temperature oxidation of aluminum single Abstract The oxidation of aluminum single crystals is studied using molecular dynamics (MD) simulations with dynamic charge transfer between atoms. The simulations are performed on three aluminum low-index surfaces

Southern California, University of

320

Au#sm Explained: Synergis#c Poisoning from Aluminum and Glyphosate  

E-Print Network [OSTI]

Au#sm Explained: Synergis#c Poisoning from Aluminum and Glyphosate Stephanie #12;Outline · Glyphosate and AuOsm · Aluminum, glyphosate, sulfate and the pineal gland ­ Sunlight Deficiency ­ SynergisOc Effects of Glyphosate and Aluminum

Seneff, Stephanie

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

MECHANICAL TEST RESULTS ON DIPOLE MODEL C-l 25 mm ALUMINUM COLLARS  

E-Print Network [OSTI]

P~. FI'9 . ~ C.C rv'IW\\ 707~-Th ALUMINUM ' ~LAI2.. o Pl.ATTDIPOLE MODEL C-1 25 mm ALUMINUM COLLARS C. Peters FebruaryON DIPOLE MODEL C-I 25 mm ALUMINUM COLLARS Craig Peters

Peters, C.

2010-01-01T23:59:59.000Z

322

Aluminum speciation in aqueous fluids at deep crustal pressure and temperature  

E-Print Network [OSTI]

Aluminum speciation in aqueous fluids at deep crustal pressure and temperature Mainak Mookherjee a Abstract We investigated aluminum speciation in aqueous fluids in equilibrium with corundum using in situ Raman spectroscopy in hydrothermal diamond anvil cells to 20 kbar and 1000 °C. We have studied aluminum

Manning, Craig

323

Solidification of Aluminum Alloys Edited by TMS (The Minerals, Metals & Materials Society), 2004  

E-Print Network [OSTI]

Solidification of Aluminum Alloys Edited by TMS (The Minerals, Metals & Materials Society), 2004 Modeling the Effects of Mold Topography on Aluminum Cast Surfaces Lijian Tan1 , Nicholas Zabaras1 1 14853, USA Keywords: Aluminum Solidification; Mold topography; Cast Surfaces Abstract The air

Zabaras, Nicholas J.

324

Production of microporous aluminum oxide electrodes as supports for tethered lipid bilayers of large surface area.  

E-Print Network [OSTI]

1 Production of microporous aluminum oxide electrodes as supports for tethered lipid bilayers.Bourdillon@utc.fr Abstract A composite electrode made by association of gold and porous aluminum oxide has been used aluminum oxide; phospholipid bilayer; two-dimensional electrochemistry; ubiquinone lateral mobility. 1

Paris-Sud XI, Université de

325

Ultrafast dynamics of the laser-induced solid-to-liquid phase transition in aluminum  

E-Print Network [OSTI]

Ultrafast dynamics of the laser-induced solid-to-liquid phase transition in aluminum A thesis dynamics of the laser-induced solid-to-liquid phase transition in aluminum Eric Mazur Maria Kandyla Abstract This dissertation reports the ultrafast dynamics of aluminum during the solid-to- liquid phase

Mazur, Eric

326

GLOBAL BIOGEOCHEMICAL CYCLES, VOL. ???, XXXX, DOI:10.1029/, Estimating mineral aerosol iron and aluminum1  

E-Print Network [OSTI]

and aluminum1 solubility from particle size using diffusion-controlled2 and surface [Jickells et al., 2005].34 Aluminum, on the other hand, is not found to be an important nutrient chemistry compared to Fe, aluminum has been used as a39 tracer for quantifying the dust deposition

Zender, Charles

327

Measurements of submillimeter polarization induced by oblique reflection from aluminum alloy  

E-Print Network [OSTI]

Measurements of submillimeter polarization induced by oblique reflection from aluminum alloy Tom of submillimeter radiation when it is obliquely reflected by a flat mirror made of aluminum alloy. For angles by oblique reflection from aluminum alloy at a wavelength of 1 cm agrees with the prediction of the ordinary

Novak, Giles

328

ENS'05 Paris, France, 14-16 December 2005 CONTROL POROUS PATTERN OF ANODIC ALUMINUM OXIDE  

E-Print Network [OSTI]

ENS'05 Paris, France, 14-16 December 2005 CONTROL POROUS PATTERN OF ANODIC ALUMINUM OXIDE BY FOILS simpler, and low cost method to fabricate porous pattern of the anodic aluminum oxide (AAO) based on the aluminum foils laminate approach were carried out. During our experiments, it was found that the pores

Paris-Sud XI, Université de

329

HIGH TEMPERATURE SULFIDATION BEHAVIOR OF LOW Al IRON-ALUMINUM COMPOSITIONS  

E-Print Network [OSTI]

HIGH TEMPERATURE SULFIDATION BEHAVIOR OF LOW Al IRON-ALUMINUM COMPOSITIONS S.W. Banovic, J.N. Du (Received January 5, 1998) (Accepted March 23, 1998) Introduction Iron-aluminum weld overlay coatings, the application of iron-aluminum alloys is currently limited due to hydrogen cracking susceptibility subsequent

DuPont, John N.

330

Mercury-free dissolution of aluminum-clad fuel in nitric acid  

DOE Patents [OSTI]

A mercury-free dissolution process for aluminum involves placing the aluminum in a dissolver vessel in contact with nitric acid-fluoboric acid mixture at an elevated temperature. By maintaining a continuous flow of the acid mixture through the dissolver vessel, an effluent containing aluminum nitrate, nitric acid, fluoboric acid and other dissolved components are removed. 5 figs.

Christian, J.D.; Anderson, P.A.

1994-11-15T23:59:59.000Z

331

Mercury-free dissolution of aluminum-clad fuel in nitric acid  

DOE Patents [OSTI]

A mercury-free dissolution process for aluminum involves placing the aluminum in a dissolver vessel in contact with nitric acid-fluoboric acid mixture at an elevated temperature. By maintaining a continuous flow of the acid mixture through the dissolver vessel, an effluent containing aluminum nitrate, nitric acid, fluoboric acid and other dissolved components are removed.

Christian, Jerry D. (Idaho Falls, ID); Anderson, Philip A. (Pocatello, ID)

1994-01-01T23:59:59.000Z

332

A Regulator's View of Cogeneration  

E-Print Network [OSTI]

of the total national electric generation. In view of the energy requirements of Pennsylvania's industry and the impact of increasing energy costs on employment the Commission directed its technical staff to investigate the potential for industrial cogeneration...

Shanaman, S. M.

1982-01-01T23:59:59.000Z

333

Aluminum sulfate (alum; Al2 O) is used as a  

E-Print Network [OSTI]

477 Aluminum sulfate (alum; Al2 (SO4 )3 ·14H2 O) is used as a chemical treatment of poultry litter litters showed that the P is present in inorganic (P sorbed on Al oxides, calcium phosphates) and organic increases. Overall, alum-amended litters exhibited higher proportions of Al-bound P species and phytic acid

Sparks, Donald L.

334

Particle pulses from superconducting aluminum tunnel junction detectors  

SciTech Connect (OSTI)

Superconducting aluminum tunnel junctions have been developed for use as particle detectors. This paper presents results on static characteristics of these devices. We also present results from tests of these detectors with 6-keV X-rays. An extrapolation of the properties of these detectors to one suitable for dark-matter detectors is discussed.

Stricker, D.A.; Bing, D.D.; Bland, R.W.; Dickson, S.C.; Dignan, T.; Johnson, R.T.; Lockhart, J.M.; Laws, K.; Simon, M.W.; Watson, R. (San Francisco State Univ., Physics and Astronomy Dept. San Francisco, CA (US))

1991-03-01T23:59:59.000Z

335

The distribution of particulate aluminum in the Gulf of Mexico  

E-Print Network [OSTI]

of runoff water in the oceans. Toyota and Okabe (1967) reported vertical distri- butions of particulate aluminum ranging from 1-50 ug Al/L in samples from the Western North Pacific, Indian and Antarctic Oceans. , Stefansson and Atkinson (1969) used...

Feely, Richard Alan

1971-01-01T23:59:59.000Z

336

aluminum energy conservation: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aluminum energy conservation First Page Previous Page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Next Page Last Page Topic Index 1 Energy Challenges and...

337

Aluminum tunnel junction detector operation in an adiabatic demagnetization refrigerator  

SciTech Connect (OSTI)

Superconducting tunnel junction detectors are being developed as both particle and X-ray detectors. Aluminum junctions are desirable for detectors because of their strong native oxide barriers, and because the small energy gap of aluminum is a good match to ballistic phonons generated by particle interactions in single crystals of silicon or other low acoustic-loss insulating crystals. Aluminum tunnel junction detectors must be operated near 0.1 T{sub C} which is 110 mK for aluminum. To operate detectors at these temperatures, we have developed adiabatic demagnetization refrigerators (ADRs) for the laboratory and prototype ADRs for space based operation. These cryogenic systems are simpler, more convenient and more portable than most dilution refrigerators. We have demonstrated that the magnetic field of the ADR need not compromise the performance of aluminum tunnel junctions. We have recently initiated a program to develop superconducting tunnel junctions (STJs) as high resolution X-ray detectors and low energy threshold particle detectors. This complements our existing program in which we are developing high resolution X-ray microcalorimeter detectors. One of our goals for both of these cryogenic detector development efforts is to observe X-ray emission from cosmic sources. This requires a refrigeration system that can operate under zero gravity space flight conditions. For the microcalorimeter project, temperatures of 100 mK and below are required to sufficiently reduce the heat capacity of the device. We have therefore developed an adiabatic demagnetization refrigerator (ADR) system which can be configured for space flight.

Labov, S.; Silver, E.; Le Gros, M. (Lawrence Livermore National Lab., CA (United States)); Bland, R.W.; Dickson, S.C.; Dignan, T.G.; Laws, K.; Johnson, R.T.; Simon, M.W.; Stricker, D.A.; Watson, R.M. (San Francisco State Univ., CA (United States)); Madden, N.; Landis, D. (Lawrence Berkeley Lab., CA (United States))

1992-01-30T23:59:59.000Z

338

Viewing device for electron-beam equipment  

SciTech Connect (OSTI)

Viewing devices are used to observe melting, welding, and so on in vacuum systems, an it is necessary to protect the windows from droplets and vapor. A viewing device for electron-beam equipment is described in which the viewing tube and mounting flange are made as a tubular ball joint enclosed in a steel bellows, which render the viewing device flexible. Bending the viewing tube in the intervals between observations protects the viewing window from sputtering and from drops of molten metal.

Nasyrov, R.S.

1985-06-01T23:59:59.000Z

339

Improved Irradiation Performance of Uranium-Molybdenum/Aluminum Dispersion Fuel by Silicon Addition in Aluminum  

SciTech Connect (OSTI)

Uranium-molybdenum fuel particle dispersion in aluminum is a form of fuel under development for conversion of high-power research and test reactors from highly enriched to low-enriched uranium in the U.S. Global Threat Reduction Initiative program (also known as the Reduced Enrichment for Research and Test Reactors program). Extensive irradiation tests have been conducted to find a solution for problems caused by interaction layer growth and pore formation between U-Mo and Al. Adding a small amount of Si (up to [approximately]5 wt%) in the Al matrix was one of the proposed remedies. The effect of silicon addition in the Al matrix was examined using irradiation test results by comparing side-by-side samples with different Si additions. Interaction layer growth was progressively reduced with increasing Si addition to the matrix Al, up to 4.8 wt%. The Si addition also appeared to delay pore formation and growth between the U-Mo and Al.

Yeon Soo Kim; G. L. Hofman; A. B. Robinson; D. M. Wachs

2013-10-01T23:59:59.000Z

340

Cost-Effective Consolidation of Fine Aluminum Scrap for Increased Remelting Effieciency  

SciTech Connect (OSTI)

The main objective of this research was to develop a new re-melting process for fine or light gauge aluminum scrap products that exhibits dramatic improvements in energy efficiency. Light gauge aluminum scrap in the form of chips, turnings, and borings has historically been underutilized in the aluminum recycling process due to its high surface area to volume ratio resulting in low melt recovery. Laboratory scale consolidation experiments were performed using loose aluminum powder as a modeling material as well as shredded aluminum wire scrap. The processing parameters necessary to create consolidated aluminum material were determined. Additionally, re-melting experiments using consolidated and unconsolidated aluminum powder confirmed the hypothesis that metal recovery using consolidated material will significantly improve by as much as 20%. Based on this research, it is estimated that approximately 495 billion Btu/year can be saved by implementation of this technology in one domestic aluminum rolling plant alone. The energy savings are realized by substituting aluminum scrap for primary aluminum, which requires large amounts of energy to produce. While there will be an initial capital investment, companies will benefit from the reduction of dependence on primary aluminum thus saving considerable costs. Additionally, the technology will allow companies to maintain in-house alloy scrap, rather than purchasing from other vendors and eliminate the need to discard the light gauge scrap to landfills.

William Van Geertruyden

2005-09-22T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Advances in Glass Formulations for Hanford High-Aluminum, High-Iron and Enhanced Sulphate Management in HLW Streams - 13000  

SciTech Connect (OSTI)

The current estimates and glass formulation efforts have been conservative in terms of achievable waste loadings. These formulations have been specified to ensure that the glasses are homogenous, contain essentially no crystalline phases, are processable in joule-heated, ceramic-lined melters and meet Hanford Tank Waste Treatment and Immobilization Plant (WTP) Contract terms. The WTP's overall mission will require the immobilization of tank waste compositions that are dominated by mixtures of aluminum (Al), chromium (Cr), bismuth (Bi), iron (Fe), phosphorous (P), zirconium (Zr), and sulphur (S) compounds as waste-limiting components. Glass compositions for these waste mixtures have been developed based upon previous experience and current glass property models. Recently, DOE has initiated a testing program to develop and characterize HLW glasses with higher waste loadings and higher throughput efficiencies. Results of this work have demonstrated the feasibility of increases in waste loading from about 25 wt% to 33-50 wt% (based on oxide loading) in the glass depending on the waste stream. In view of the importance of aluminum limited waste streams at Hanford (and also Savannah River), the ability to achieve high waste loadings without adversely impacting melt rates has the potential for enormous cost savings from reductions in canister count and the potential for schedule acceleration. Consequently, the potential return on the investment made in the development of these enhancements is extremely favorable. Glass composition development for one of the latest Hanford HLW projected compositions with sulphate concentrations high enough to limit waste loading have been successfully tested and show tolerance for previously unreported tolerance for sulphate. Though a significant increase in waste loading for high-iron wastes has been achieved, the magnitude of the increase is not as substantial as those achieved for high-aluminum, high-chromium, high-bismuth or sulphur. Waste processing rate increases for high-iron streams as a combined effect of higher waste loadings and higher melt rates resulting from new formulations have been achieved. (author)

Kruger, Albert A. [WTP Engineering Division, United States Department of Energy, Office of River Protection, Post Office Box 450, Richland, Washington 99352 (United States)] [WTP Engineering Division, United States Department of Energy, Office of River Protection, Post Office Box 450, Richland, Washington 99352 (United States)

2013-07-01T23:59:59.000Z

342

Optimal heat-reversible snap joints for frame-panel assembly in aluminum space frame automotive bodies  

E-Print Network [OSTI]

Optimal heat-reversible snap joints for frame-panel assembly in aluminum space frame automotive, snap-fit joints, aluminum space frame 1 INTRODUCTION Aluminum space frame (AFS) automotive bodies to dramatically improve the recyclability of aluminum space frame (ASF) bodies by enabling clean separation

Saitou, Kazuhiro "Kazu"

343

26 2010 Proceedings Symposium on Ash in North America GTR-NRS-P-72 STRIKE ONE! ALUMINUM. STRIKE TWO! MAPLE.  

E-Print Network [OSTI]

26 2010 Proceedings Symposium on Ash in North America GTR-NRS-P-72 STRIKE ONE! ALUMINUM. STRIKE TWO) 431-2708 or email at jwiedenbeck@fs.fed.us. ALUMINUM BATS ... STRIKE ONE! The aluminum bat arrived percent of the overall bat market, were made out of aluminum. Likewise, the majority of adult bats

344

Wide field of view telescope  

DOE Patents [OSTI]

A wide field of view telescope having two concave and two convex reflective surfaces, each with an aspheric surface contour, has a flat focal plane array. Each of the primary, secondary, tertiary, and quaternary reflective surfaces are rotationally symmetric about the optical axis. The combination of the reflective surfaces results in a wide field of view in the range of approximately 3.8.degree. to approximately 6.5.degree.. The length of the telescope along the optical axis is approximately equal to or less than the diameter of the largest of the reflective surfaces.

Ackermann, Mark R. (Albuquerque, NM); McGraw, John T. (Placitas, NM); Zimmer, Peter C. (Albuquerque, NM)

2008-01-15T23:59:59.000Z

345

Limited View Angle Iterative CT Reconstruction  

E-Print Network [OSTI]

;Some Prior Literature in Limited View Tomography CT with limited-angle data and few views IRR algorithm Iterative Reconstruction-Reprojection (IRR) : An Algorithm for Limited Data Cardiac- Computed-views and limited-angle data in divergent-beam CT by E. Y. Sidky, CM Kao, and X. Pan (2006) Few-View Projection

346

Drying studies for corroded DOE aluminum plate fuels  

SciTech Connect (OSTI)

The Idaho National Engineering Laboratory (INEL) currently stores a wide variety of spent nuclear fuel. The fuel was originally intended to be stored underwater for a short period of thermal cooling, then removed and reprocessed. However, it has been stored underwater for much longer thank originally anticipated. During this time dust and airborne desert soil have entered the oldest INEL pool, accumulating on the fuel. Also, the aluminum fuel cladding has corroded compromising the exposed surfaces of the fuel. Plans are now underway to move some the the more vulnerable aluminum plate type fuels into dry storage in an existing vented and filtered fuel storage facility. In preparation for dry storage of the fuel a drying and canning station is being built at the INEL. The two primary objectives of this facility are to determine the influence of corrosion products on the drying process and to establish temperature distribution inside the canister during heating.

Lords, R.E.; Windes, W.E. [Idaho National Engineering Lab., Idaho Falls, ID (United States); Crepeau, J.C.; Sidwell, R.W. [Idaho Univ., Idaho Falls, ID (United States) Dept. of Mechanical Engineering

1996-05-01T23:59:59.000Z

347

Reduction of Annealing Times for Energy Conservation in Aluminum  

SciTech Connect (OSTI)

Carnegie Mellon University was teamed with the Alcoa Technical Center with support from the US Dept. of Energy (Office of Industrial Technology) and the Pennsylvania Technology Investment Authority (PTIA) to make processing of aluminum less costly and more energy efficient. Researchers in the Department of Materials Science and Engineering have investigated how annealing processes in the early stages of aluminum processing affect the structure and properties of the material. Annealing at high temperatures consumes significant amounts of time and energy. By making detailed measurements of the crystallography and morphology of internal structural changes they have generated new information that will provide a scientific basis for shortening processing times and consuming less energy during annealing.

Anthony D. Rollett; Hasso Weiland; Mohammed Alvi; Abhijit Brahme

2005-08-31T23:59:59.000Z

348

Lattice dynamics and phase diagram of aluminum at high temperatures  

SciTech Connect (OSTI)

The dispersion of phonons in the fcc, hcp, and bcc phases of aluminum is calculated at ultrahigh pressures by the method of small displacements in a supercell. The stability of the phonon subsystem is studied. The thermodynamic characteristics are calculated in the quasi-harmonic approximation, and a phase diagram of aluminum is plotted. As compared to the Debye model, the use of a phonon spectrum calculated in the quasi-harmonic approximation significantly broadens the hcp phase field and strongly shifts the phase boundary between the fcc and bcc phases. The normal isentrope is calculated at megabar pressures. It is shown to intersect the fcc-hcp and hcp-bcc phase boundaries. The sound velocity along the normal isentrope is calculated. It is shown to have a nonmonotonic character.

Kudasov, Yu. B., E-mail: yu_kudasov@yahoo.com; Surdin, O. M.; Korshunov, A. S.; Pavlov, V. N. [National Research Nuclear University 'MEPhI,', Sarov State Institute of Physics and Technology (Russian Federation)] [National Research Nuclear University 'MEPhI,', Sarov State Institute of Physics and Technology (Russian Federation); Frolova, N. V.; Kuzin, R. S. [Russian Federal Nuclear Center-All-Russian Research Institute of Experimental Physics (Russian Federation)] [Russian Federal Nuclear Center-All-Russian Research Institute of Experimental Physics (Russian Federation)

2013-10-15T23:59:59.000Z

349

Aluminum as a source of background in low background experiments  

E-Print Network [OSTI]

Neutrinoless double beta decay would be a key to understanding the nature of neutrino masses. The next generation of High Purity Germanium experiments will have to be operated with a background rate of better than 10^-5 counts/(kg y keV) in the region of interest around the Q value of the decay. Therefore, so far irrelevant sources of background have to be considered. The metalization of the surface of germanium detectors is in general done with aluminum. The background from the decays of 22Na, 26Al, 226Ra and 228Th introduced by this metalization is discussed. It is shown that only a special selection of aluminum can keep these background contributions acceptable.

B. Majorovits; I. Abt; M. Laubenstein; O. Volynets

2011-05-18T23:59:59.000Z

350

Fabrication of sub-15?nm aluminum wires by controlled etching  

SciTech Connect (OSTI)

We describe a method for the fabrication of uniform aluminum nanowires with diameters below 15?nm. Electron beam lithography is used to define narrow wires, which are then etched using a sodium bicarbonate solution, while their resistance is simultaneously measured in-situ. The etching process can be stopped when the desired resistance is reached, and can be restarted at a later time. The resulting nanowires show a superconducting transition as a function of temperature and magnetic field that is consistent with their smaller diameter. The width of the transition is similar to that of the lithographically defined wires, indicating that the etching process is uniform and that the wires are undamaged. This technique allows for precise control over the normal state resistance and can be used to create a variety of aluminum nanodevices.

Morgan-Wall, T.; Hughes, H. J.; Hartman, N.; Markovi?, N. [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218 (United States); McQueen, T. M. [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218 (United States); Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218 (United States)

2014-04-28T23:59:59.000Z

351

Influence of insulating coating on aluminum wire explosions  

SciTech Connect (OSTI)

Single wire explosions are widely used in understanding the early stages of z-pinch experiments. This paper presents a serial of experiments conducted on the pulse power generator with ?1?kA peak current and ?10?ns rising time in Xi'an Jiao Tong University. Polyimide coated aluminum wires and uncoated ones were tested under three different voltages to analyze the effect of insulating coating. Experimental results showed that insulating coating can increase the energy deposition 10%?30% in aluminum wires by delaying the voltage collapse and raising the maximum load resistance. The substantial energy deposition resulted in about 20% faster expansion rates for coated wires. Experimental evidence that plasma channel shunts the current from the wire core was observed by streak camera and schlieren graphs. This paper also briefly discussed the influence of nonuniform coating on the morphology of wire expansion.

Li, Yang; Wu, Jian, E-mail: jxjawj@gmail.com [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China); State Key Laboratory of Intense Pulse Radiation of Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Sheng, Liang; Zhao, Jizhen; Zhang, Mei; Yuan, Yuan; Peng, Bodong [State Key Laboratory of Intense Pulse Radiation of Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Li, Xingwen [State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China)

2014-10-15T23:59:59.000Z

352

Measurements of electrical and mechanical properties of aluminum composite cryoconductors  

E-Print Network [OSTI]

developed by Alcoa for high temperature applicationsi. To test the formability of the new matrix material with the pure aluminum filaments, Oberly and Ho' developed the following study based on requirements for a pulsed energy storage device. Pulsed..., relevant literature covering development studies on the Alcoa composite cryoconductor is reviewed below. The following summaries cover the period from 1990 to the current year (1993). In the 1990 publication of Advances in Cryogenic Engineering...

Sundby, Paul C.

1994-01-01T23:59:59.000Z

353

Sorption characteristics of polycyclic aromatic hydrocarbons in aluminum smelter residues  

SciTech Connect (OSTI)

High temperature carbon oxidation in primary aluminum smelters results in the release of polycyclic aromatic hydrocarbons (PAH) into the environment. The main source of PAH are the anodes, which are composed of petroleum coke (black carbon, BC) and coal tar pitch. To elucidate the dominant carbonaceous phase controlling the environmental fate of PAH in aluminum smelter residues (coke BC and/or coal tar), the sorptive behavior of PAHs has been determined, using passive samplers and infinite-sink desorption methods. Samples directly from the wet scrubber were studied as well as ones from an adjacent 20-year old storage lagoon and roof dust from the smelter. Carbon-normalized distribution coefficients of native PAHs were 2 orders of magnitude higher than expected based on amorphous organic carbon (AOC)/water partitioning, which is in the same order of magnitude as reported literature values for soots and charcoals. Sorption isotherms of laboratory-spiked deuterated phenanthrene showed strong (about 100 times stronger than AOC) but nonetheless linear sorption in both fresh and aged aluminum smelter residues. The absence of nonlinear behavior typical for adsorption to BC indicates that PAH sorption in aluminum smelter residues is dominated by absorption into the semi-solid coal tar pitch matrix. Desorption experiments using Tenax showed that fresh smelter residues had a relatively large rapidly desorbing fraction of PAH (35-50%), whereas this fraction was strongly reduced (11-16%) in the lagoon and roof dust material. Weathering of the coal tar residue and/or redistribution of PAH between coal tar and BC phases could explain the reduced availability in aged samples. 38 refs., 5 figs., 1 tab.

Gijs D. Breedveld; Emilien Pelletier; Richard St. Louis; Gerard Cornelissen [Norwegian Geotechnical Institute, Oslo (Norway)

2007-04-01T23:59:59.000Z

354

Microstructure Development and Characteristics of Semisolid Aluminum Alloys  

SciTech Connect (OSTI)

A drop forge viscometer was employed to investigate the flow behavior under very rapid compression rates of A357, A356 diluted with pure aluminum and Al-4.5%Cu alloys. The A357 alloys were of commercial origin (MHD and SIMA) and the rheocast, modified A356 and Al-4.5Cu alloys were produced by a process developed at the solidification laboratory of MIT.

Merton Flemings; srinath Viswanathan

2001-05-15T23:59:59.000Z

355

Energy Challenges and Conservation Achievements in the Aluminum Industry  

E-Print Network [OSTI]

. The apparent danger and the emotional impact could prove to be a serious setback for the development of nuclear power. We are not certain yet whether President Carter and the Congress will attempt to write more meaningful energy legislation this year.... The lack of an aggressive, coordinated, national energy development plan is a disappointment. But it is not having a profound impact on the aluminum industry or Alcoa. We are doing a great deal to conserve energy and improve our operating methods...

Sheldon, A. C.

1979-01-01T23:59:59.000Z

356

Commonwealth Aluminum: Manufacturer Conducts Plant-Wide Energy Assessments  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up fromDepartmentTieCelebrate Earth Codestheat Two Aluminum Sheet Production Operations |

357

Perrhenate Uptake by Iron and Aluminum Oxyhydroxides: An  

E-Print Network [OSTI]

in Hanford Waste Tank Sludges B R A D L E Y W A K O F F A N D K A T H R Y N L . N A G Y * Department and aluminum oxyhydroxide solids from aqueous simulants of high-level nuclear waste stored at Hanford, WA that 5% of the 99Tc inventory in the Hanford waste tanks may be associated with the sludges, and 0

Illinois at Chicago, University of

358

The Dissolution and Characterization of Aluminum Clad Oxide Fuel  

SciTech Connect (OSTI)

Laboratory dissolution studies of aluminum clad mixed oxide fuel rods have been conducted using two different F-Canyon decladding and dissolving flowsheets. During the first phase of the experimental program, materials from three different color coded fuel rods were dissolved in caustic and nitric acid solutions. The final phase of the laboratory program involved the dissolution and characterization of materials from three cracked pellet fuel rods using a selected caustic/ nitric acid flowsheet.Laboratory results obtained from the initial dissolution studies identified several inconsistencies and potential problem issues with the behavior of materials from the color coded fuel rods. Based on these findings and influenced by the difficulties introduced by using the RCRA listed mercury during processing, the flowsheet selected for dissolving these aluminum clad fuel rods in F-Canyon dissolvers was the two- step caustic decladding/ nitric acid dissolution flowsheet.The final phase of the experimental program involved testing materials from three cracked pellet fuel rods using the selected flowsheet. Again all aluminum fuel rod components dissolved during the decladding step. However, some uranium and plutonium bearing solids remained with the caustic decladding solution which could be sent to waste. The quantities of uranium and plutonium expected to remain with the caustic solutions are small.Fluoride ions will need to be present in the nitric acid dissolver solution to dissolve all solids. At 0.05 molar fluoride concentration, no plutonium bearing solids remained in the product solutions.

Gray, J.H.

1998-10-26T23:59:59.000Z

359

Nondestructive optical characterization of chemical conversion coatings on aluminum  

SciTech Connect (OSTI)

Chromium phosphate conversion coatings on aluminum have been characterized with nondestructive optical techniques. Complementary vibrational spectroscopy techniques, i.e., Fourier transform infrared spectroscopy and confocal micro-Raman spectroscopy, prove the presence of chromium phosphate as principal component in the coating. Additionally, aluminum oxide and indications for the presence of chromium oxide and aluminum fluoride are found. Reflection/absorption infrared spectroscopy (RAIRS) allows analysis of coatings as thin as 40 nm, while confocal micro-Raman spectroscopy is limited to thicknesses above about 150 nm. Compared to RAIRS spectra, the interpretation of Raman spectra is easier due to the morphological characteristics of the conversion coatings, e.g., the coating thickness, using a simulation and regression procedure based on a two-layer optical model. The optical constants of the upper layer, which in a first approximation can be attributed to the chromium phosphate part of the conversion coating, can explain the greenish appearance of the thickest conversion coatings. A linear relationship exists between the coating thickness and the conversion time. An analogous linear relation exists between the conversion time and the peak areas of most of the absorption peaks in the RAIRS spectra.

Schram, T.; De Laet, J.; Terryn, H. [Vrije Univ. Brussel, Brussels (Belgium). Dept. of Metallurgy, Electrochemistry, and Materials Science

1998-08-01T23:59:59.000Z

360

Mechanical Properties of Aluminum Tailor Welded Blanks at Superplastic Temperatures  

SciTech Connect (OSTI)

This paper describes an investigation of the mechanical properties of weld material in aluminum tailor welded blanks (TWB) at superplastic temperatures and discusses the potential application of TWBs in superplastic forming operations. Aluminum TWBs consist of multiple sheet materials of different thickness or alloy that are butt-welded together into a single, variable thickness blank. To evaluate the performance of the weld material in TWBs, a series of tensile tests were conducted at superplastic temperatures with specimens that contained weld material in the gage area. The sheet material used in the study was Sky 5083 aluminum alloy, which was joined to produce the TWBs by gas tungsten arc welding using an AA5356 filler wire. The experimental results show that, in the temperature range of 500?C to 550?C and at strain rates ranging from 10-4 sec-1 to 10-2 sec-1, the weld material has a higher flow stress and lower ductility than the monolithic sheet material. The weld material exhibited elongations of 40% to 60% under these conditions, whereas the monolithic sheet achieved 220% to 360% elongation. At the same temperatures and strain rates, the weld material exhibited flow stresses 1.3 to 4 times greater than the flow stress in the monolithic sheet. However, the weld material did show a substantial increase in the strain rate sensitivity and ductility when compared to the same material formed at room temperature.

Davies, Richard W.; Vetrano, John S.; Smith, Mark T.; Pitman, Stan G.

2002-10-06T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Corrosion of aluminum cladding under optimized water conditions  

SciTech Connect (OSTI)

Experience at SRS, ORNL, BNL, and Georgia Institute of Technology involving irradiated aluminum clad fuel and target elements, as well as studies of non-irradiated aluminum indicate that some types of aluminum assemblies can be kept in a continually well-deionized water atmosphere for up to 25 years without problems. SRS experience ranges from 2.75 years for the L-1.1 charge kept in deionized D{sub 2}O{sup 1} to greater than 10 years for assemblies stored in the Receiving Basin for Off-site Fuel (RBOF){sup 2}. Experience at Georgia Institute of Technology reactor in Atlanta yielded the longest value of 25 years without problems. The common denominators in all of the reports is that the water is continually deionized to approximately 2 M{Omega} (2 {times} 10{sup 6}ohms) resistivity and the containers for the water are stainless steel or other non-porous material. This resistivity value is equivalent to a value of 0.5 micromhos or microSiemens conductivity and is reagent grade II quality water.{sup 3} 4 tabs, 26 refs.

Gibbs, A.

1992-07-08T23:59:59.000Z

362

Corrosion of aluminum cladding under optimized water conditions  

SciTech Connect (OSTI)

Experience at SRS, ORNL, BNL, and Georgia Institute of Technology involving irradiated aluminum clad fuel and target elements, as well as studies of non-irradiated aluminum indicate that some types of aluminum assemblies can be kept in a continually well-deionized water atmosphere for up to 25 years without problems. SRS experience ranges from 2.75 years for the L-1.1 charge kept in deionized D[sub 2]O[sup 1] to greater than 10 years for assemblies stored in the Receiving Basin for Off-site Fuel (RBOF)[sup 2]. Experience at Georgia Institute of Technology reactor in Atlanta yielded the longest value of 25 years without problems. The common denominators in all of the reports is that the water is continually deionized to approximately 2 M[Omega] (2 [times] 10[sup 6]ohms) resistivity and the containers for the water are stainless steel or other non-porous material. This resistivity value is equivalent to a value of 0.5 micromhos or microSiemens conductivity and is reagent grade II quality water.[sup 3] 4 tabs, 26 refs.

Gibbs, A.

1992-07-08T23:59:59.000Z

363

View  

E-Print Network [OSTI]

all real solutions of a given system of polynomial equations. ... A crucial ingredient is a semidefinite characterization of the real radical ideal ...... The options.

2010-08-12T23:59:59.000Z

364

View  

E-Print Network [OSTI]

flow equation is discretized in space using a control volume finite-element technique .... The control volume finite-element method is selected .... parallel plates.

2003-07-16T23:59:59.000Z

365

View  

E-Print Network [OSTI]

based on median finding, variable fixing, and secant techniques. Keywords: ..... arithmetic operations, the overall complexity is O(n2). D. The worst case bound in ..... always work on its rated clock speed, we turned force the Linux system to use the ..... dimensionally equidistributed uniform pseudo-random number generator.

2013-10-14T23:59:59.000Z

366

View  

E-Print Network [OSTI]

obtained by using different uncertainty sets estimated using simulated and ... Given a fixed mix of electric power plants (nuclear, thermal, hydroelectric, and...

2011-01-28T23:59:59.000Z

367

View  

E-Print Network [OSTI]

Aug 19, 2009 ... linear-algebraic and graph theoretic properties of this matrix class. The con- ..... The MatLab solvers linprog and quadprog were used.

2010-03-14T23:59:59.000Z

368

View  

E-Print Network [OSTI]

Sep 3, 2003 ... Landau (TDGL) equation, the Maxwell equations, and an energy equation ... varying currents and magnetic fields generate thermal energy,...

1910-31-00T23:59:59.000Z

369

View  

E-Print Network [OSTI]

Let fbe a meromorphic function satisfying condition (1.2), and let rj be a sequence with property (2.5). Then the set S is finite and for some subsequence of...

2004-12-25T23:59:59.000Z

370

View  

E-Print Network [OSTI]

project of the classification of (simple) nuclear separable C*-algebras [E]. Let C? denote the category of separable C*-algebras and ?-homomorphisms.

2010-07-30T23:59:59.000Z

371

View  

E-Print Network [OSTI]

the classification results of Kirchberg and Phillips using the notion of nuclear absorbing ... A simple purely infinite nuclear separable C*-algebra is called.

2006-07-11T23:59:59.000Z

372

View  

E-Print Network [OSTI]

a battery of benchmark instances of up to 200 nodes are reported. These seem to be the largest instances that have been solved exactly for this problem.

2008-07-07T23:59:59.000Z

373

View  

E-Print Network [OSTI]

author would also like to acknowledge the Center for High Performance Computing at VCU for providing computational infrastructure and support. 1...

2009-05-07T23:59:59.000Z

374

View  

E-Print Network [OSTI]

the results of [8] to obtain, for each natural number n, a simple nuclear C?- algebra An whose ordered K0-group is order isomorphic to Zn. This result was further...

2008-02-01T23:59:59.000Z

375

View  

E-Print Network [OSTI]

Feb 28, 2006 ... Abstract. The major focus of this work is to compare several methods for computing the proximal point of a nonconvex function via numerical...

2006-02-28T23:59:59.000Z

376

View  

E-Print Network [OSTI]

In order to increase the search capability of MBH, a population framework has been proposed ... The key idea is to avoid new individuals to enter the population if someone similar (in a ..... We measure the efficiency in terms of number of (two-.

andrea,,,

377

View  

E-Print Network [OSTI]

May 31, 2005 ... Robert M. Freund: MIT Sloan School of Management, 50 Memorial Drive, Cambridge, Massachusetts 02139-4307, ...... the transition kernel.

2005-05-30T23:59:59.000Z

378

View  

E-Print Network [OSTI]

May 12, 2005 ... We propose in this paper to study the problem of estimating the cost-to- ... and have been proposed in the context of econometry in [Chen and White, 1998]. .... Rearranging terms, we see that the last relation can be written as.

2005-05-12T23:59:59.000Z

379

View  

E-Print Network [OSTI]

May 14, 2010 ... Generally, even testing whether a matrix is in C? is co-NP-complete [23]. ...... One concrete example is the following: ?. ?. ?. ?. ?. ?. 1 1/3 1/3...

2011-06-21T23:59:59.000Z

380

Int. J. Modelling, Identification and Control, Vol. 1, No. 2, 2006 Copyright 2006 Inderscience Enterprises Ltd.  

E-Print Network [OSTI]

for performing FSW for a number of reasons, including: lower costs, energy efficiency, greater manufacturing'. Two mechanical models: the Couette and the Visco-Plastic fluid flow models for Al-6061-T6 were

Zhang, YuMing

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Mechanical and metallurgical properties of MMC friction welds  

SciTech Connect (OSTI)

The mechanical and metallurgical properties of similar and dissimilar welds involving aluminum-based metal matrix composite (MMC) base material were investigated using factorial experimentation. The test materials comprised aluminum-based alloy 6061/Al{sub 2}O{sub 3} (W6A.10A-T6), aluminum Alloy 6061-T6 and AISI 304 stainless steel. Notch tensile strength increased when high friction pressures were employed during MMC/MMC, MMC/Alloy 6061, MMC/AISI 304 stainless steel and Alloy 6061/Alloy 6061 friction welding. In MMC/Alloy 6061 welds, notch tensile strength also increased when high forging pressures were employed. Applied oxide films on both the MMC and AISI stainless steel substrates had a markedly detrimental effect on dissimilar weld mechanical properties. The optimum notch tensile strength properties were produced when high friction pressure values were applied during dissimilar MMC/AISI 304 stainless steel welding. High friction pressure had two beneficial effects, i.e., it decreased the thickness of the FeAl{sub 3} intermetallic film and it promoted disruption and dispersal of oxide films at the joint interface. In direct contrast, the presence of thick anodized oxide films on the MMC substrate surface prior to friction welding had no observable influence on MMC/MMC weld mechanical properties.

Li, Z.; Maldonado, C.; North, T.H. [Univ. of Toronto, Ontario (Canada). Dept. of Metallurgy and Materials Science; Altshuller, B. [Alcan R and D Labs., Kingston, Ontario (Canada)

1997-09-01T23:59:59.000Z

382

The Impact of Aluminum and Iron Substitution on the Structure and Electrochemistry of Li[Ni0.4Co0.2-yMyMn0.4]O2 Materials  

E-Print Network [OSTI]

The Impact of Aluminum and Iron Substitution on theThe incorporation of aluminum has minimal effect on theThe cycling stability of aluminum containing materials is

WIlcox, James D.

2010-01-01T23:59:59.000Z

383

Susceptibility of Aluminum Alloys to Corrosion in Simulated Fuel Blends Containing Ethanol  

SciTech Connect (OSTI)

The compatibility of aluminum and aluminum alloys with synthetic fuel blends comprised of ethanol and reference fuel C (a 50/50 mix of toluene and iso-octane) was examined as a function of water content and temperature. Commercially pure wrought aluminum and several cast aluminum alloys were observed to be similarly susceptible to substantial corrosion in dry (< 50 ppm water) ethanol. Corrosion rates of all the aluminum materials examined was accelerated by increased temperature and ethanol content in the fuel mixture, but inhibited by increased water content. Pretreatments designed to stabilize passive films on aluminum increased the incubation time for onset of corrosion, suggesting film stability is a significant factor in the mechanism of corrosion.

Thomson, Jeffery K [ORNL; Pawel, Steven J [ORNL; Wilson, Dane F [ORNL

2013-01-01T23:59:59.000Z

384

Effect of grain size on the melting point of confined thin aluminum films  

SciTech Connect (OSTI)

The melting of aluminum thin film was studied by a molecular dynamics (MD) simulation technique. The effect of the grain size and type of confinement was investigated for aluminum film with a constant thickness of 4?nm. The results show that coherent intercrystalline interface suppress the transition of solid aluminum into liquid, while free-surface gives melting point depression. The mechanism of melting of polycrystalline aluminum thin film was investigated. It was found that melting starts at grain boundaries and propagates to grain interiors. The melting point was calculated from the Lindemann index criterion, taking into account only atoms near to grain boundaries. This made it possible to extend melting point calculations to bigger grains, which require a long time (in the MD scale) to be fully molten. The results show that 4?nm thick film of aluminum melts at a temperature lower than the melting point of bulk aluminum (933?K) only when the grain size is reduced to 6?nm.

Wejrzanowski, Tomasz; Lewandowska, Malgorzata; Sikorski, Krzysztof; Kurzydlowski, Krzysztof J. [Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, Woloska 141, 02-507 Warsaw (Poland)

2014-10-28T23:59:59.000Z

385

Colorado School of Mines Nov-12 Cylindrical or mortise lock aluminum, wood or steel door  

E-Print Network [OSTI]

Colorado School of Mines Nov-12 Cylindrical or mortise lock aluminum, wood or steel door Hinges 4 cylindrical or mortise lock aluminum, wood or steel door Hinges 4.5"x4.5" Ives 5BB1HW El Hinge 4.5"x4 FS18S OR FS444 #12;Colorado School of Mines Nov-12 Aluminum, wood or steel door with panic bar Hinges

386

Combustion of Nano-Aluminum and Liquid Water G.A. Risha, S.F. Son  

E-Print Network [OSTI]

1 Combustion of Nano-Aluminum and Liquid Water G.A. Risha, S.F. Son , R.A. Yetter, V. Yang, and B: Supplemental materials submitted #12;2 Combustion of Nano-Aluminum and Liquid Water G.A. Risha, S.F. Son, R of nano-aluminum (nAl) and liquid water has been conducted. In particular, linear and mass-burning rates

Yang, Vigor

387

Views of the solar system  

SciTech Connect (OSTI)

Views of the Solar System has been created as an educational tour of the solar system. It contains images and information about the Sun, planets, moons, asteroids and comets found within the solar system. The image processing for many of the images was done by the author. This tour uses hypertext to allow space travel by simply clicking on a desired planet. This causes information and images about the planet to appear on screen. While on a planet page, hyperlinks travel to pages about the moons and other relevant available resources. Unusual terms are linked to and defined in the Glossary page. Statistical information of the planets and satellites can be browsed through lists sorted by name, radius and distance. History of Space Exploration contains information about rocket history, early astronauts, space missions, spacecraft and detailed chronology tables of space exploration. The Table of Contents page has links to all of the various pages within Views Of the Solar System.

Hamilton, C.

1995-02-01T23:59:59.000Z

388

Chisolm View | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarreisVolcanic National Park |Chile:CooperationChisolm View Jump

389

For current viewing resistor loads  

DOE Patents [OSTI]

The invention comprises a terminal unit for a flat cable comprising a BNC-PCB connector having a pin for electrically contacting one or more conducting elements of a flat cable, and a current viewing resistor having an opening through which the pin extends and having a resistor face that abuts a connector face of the BNC-PCB connector, wherein the device is a terminal unit for the flat cable.

Lyons, Gregory R. (Tijeras, NM); Hass, Jay B. (Lee's Summit, MO)

2011-04-19T23:59:59.000Z

390

Investigation of Opportunities for High-Temperature Solar Energy in the Aluminum Industry  

SciTech Connect (OSTI)

This report gives the conclusions drawn from a study of the potential application of high-temperature solar process heat for production of aluminum.

Murray, J.

2006-05-01T23:59:59.000Z

391

Electrochemical separation of aluminum from uranium for research reactor spent nuclear fuel applications.  

SciTech Connect (OSTI)

Researchers at Argonne National Laboratory (ANL) are developing an electrorefining process to treat aluminum-based spent nuclear fuel by electrochemically separating aluminum from uranium. The aluminum electrorefiner is modeled after the high-throughput electrorefiner developed at ANL. Aluminum is electrorefined, using a fluoride salt electrolyte, in a potential range of -0.1 V to -0.2 V, while uranium is electrorefined in a potential range of -0.3 V to -0.4 V; therefore, aluminum can be selectively separated electrochemically from uranium. A series of laboratory-scale experiments was performed to demonstrate the aluminum electrorefining concept. These experiments involved selecting an electrolyte (determining a suitable fluoride salt composition); selecting a crucible material for the electrochemical cell; optimizing the operating conditions; determining the effect of adding alkaline and rare earth elements to the electrolyte; and demonstrating the electrochemical separation of aluminum from uranium, using a U-Al-Si alloy as a simulant for aluminum-based spent nuclear fuel. Results of the laboratory-scale experiments indicate that aluminum can be selectively electrotransported from the anode to the cathode, while uranium remains in the anode basket.

Slater, S. A.; Willit, J. L.; Gay, E. C.; Chemical Engineering

1999-01-01T23:59:59.000Z

392

E-Print Network 3.0 - aluminum hydroxide coating Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

by a flame, the aluminum trihydrate decomposes to release water (as ... Source: Fleskes, Joe - Dixon Field Station, Western Ecological Research Center, USGS Collection:...

393

E-Print Network 3.0 - aluminum alloys Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

394

E-Print Network 3.0 - aa7050 aluminum alloy Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

395

E-Print Network 3.0 - aa6061 aluminum alloy Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

396

E-Print Network 3.0 - aluminum alloys 1xxx Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

397

E-Print Network 3.0 - aluminum alloy evaluacion Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

398

E-Print Network 3.0 - a319 aluminum alloy Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

399

E-Print Network 3.0 - adc12 aluminum alloy Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

400

E-Print Network 3.0 - aluminum aa2024 joints Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AlGaAs with a nominal aluminum con- centration of 5% and identify individual Source: Smith, Arthur R.- Department of Physics and Astronomy, Ohio University Collection:...

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

E-Print Network 3.0 - ac4c aluminum alloy Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

402

E-Print Network 3.0 - aluminum alloys grain-scale Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

403

E-Print Network 3.0 - aluminum alloy satellite Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

404

E-Print Network 3.0 - aluminum alloy circumferential Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

descriptions of the structures and show that nickel atoms react with aluminum ... Source: Smith, Richard J. - Department of Physics, Montana State University Collection: Materials...

405

E-Print Network 3.0 - aluminum phthalocyanine photodynamic Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

on photodynamic therapy, Cancer Biol. Therapy, 2005, 4... . Flotte, A. G. Kenney, K. T. Schomacker and E. S. Gragoudas, Localization of rose bengal, aluminum......

406

E-Print Network 3.0 - aluminum stress signaling Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

joints with least stress singularities in dissimilar materials Summary: . External load was applied at the polycarbonate end and the aluminum end was fixed. A dynamic...

407

E-Print Network 3.0 - aluminum alloys final Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Centre de mathmatiques Collection: Mathematics 45 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 6, NO. 2, JUNE 1997 91 Uses of Electroplated Aluminum for Summary: , silver,...

408

E-Print Network 3.0 - aluminum nickelide ni3al Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

been considered a viable material for templated growth... no investigation into how pore growth is affected by confining the pre-anodized aluminum dimensions... to the nanometer...

409

E-Print Network 3.0 - aluminum oxide nanoparticles Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for Carbon... iron oxide nanoparticles can be derived and used to catalyze the growth of single-walled carbon... with Fe catalyst supported on aluminum oxide powders.2...

410

E-Print Network 3.0 - aluminum clad spent Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

77 ELEC4705 Fall 2009 Optical Systems Summary: Bandwidth 100THz 1014 Hz Electromagnetic interference No EMI Copper or Aluminum (expensive, large... difference andor small core...

411

E-Print Network 3.0 - aluminum clad al-li Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

64 ELEC4705 Fall 2009 Optical Systems Summary: Bandwidth 100THz 1014 Hz Electromagnetic interference No EMI Copper or Aluminum (expensive, large... difference andor small core...

412

Aluminum-tungsten fiber composites with cylindrical geometry and controlled architecture of tungsten reinforcement  

E-Print Network [OSTI]

Processing and Powder Metallurgy. 1.4 Non-Powdercommonly created by powder metallurgy are being implementedbeen achieved with powder metallurgy involving an aluminum

Lucchese, Carl Joesph

2010-01-01T23:59:59.000Z

413

DEFORMATION BEHAVIOR OF A535 ALUMINUM ALLOY UNDER DIFFERENT STRAIN RATE AND TEMPERATURE CONDITIONS.  

E-Print Network [OSTI]

??Aluminum alloys are a suitable substitution for heavy ferrous alloys in automobile structures. The purpose of this study was to investigate the flow stress behavior (more)

Rezaei, Mojgan

2015-01-01T23:59:59.000Z

414

E-Print Network 3.0 - aluminum die-casting plant Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1-2 Distribution... the ATP-funded project Texas Instruments shifted focus away from aerogels for aluminum and began Source: National Institute of Standards and Technology (NIST),...

415

E-Print Network 3.0 - aluminum phosphate catalyst Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Projects Summary: the ATP-funded project Texas Instruments shifted focus away from aerogels for aluminum and began Source: National Institute of Standards and Technology (NIST),...

416

E-Print Network 3.0 - aluminum magnesium zirconium Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

index covers both the Initial Reports and Scientific Results portions of Vol- Summary: ; hydrothermal activity; oxidation; reduction aluminum vs. magnesium, B:167 See also...

417

E-Print Network 3.0 - aluminum thin films Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of 0.6 nm thick crystalline aluminum ... Source: Wadley, Haydn - Intelligent Processing of Materials Laboratory & Department of Materials Science and Engineering,...

418

E-Print Network 3.0 - aluminum tolerance genes Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

expression and soil aluminum tolerance Summary: to exhibit enhanced tolerance to Al, alfalfa was engineered by introducing the CS gene controlled... that were more...

419

E-Print Network 3.0 - aluminum hydride phases Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

The nonlinear coupled dierential equations... enhancement by the aluminum sheets and the optimization of the operation of hydride bed are examined... It consists of a quantity...

420

E-Print Network 3.0 - aluminum-alloy flat compression Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

tension compression tension (a) Longitudinal (b) Short transverse... DUCTILE FRACTURE CHARACTERIZATION OF ALUMINUM ALLOY 2024-T351 USING DAMAGE PLASTICITY THEORY LIANG...

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

E-Print Network 3.0 - aluminum alloy weldments Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: -36. Kishi, T., and Ohira, T,, 1983, "Dynamic Crack Growth During Pop-in Fracture in 7075 Aluminum Alloy... -Field Initial Response of Acoustic Emission From Cracking...

422

E-Print Network 3.0 - automotive aluminum alloys Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

aluminium (Al) alloys, relatively high... of an aluminum alloy 1570 subjected to severe plastic deformation by high-pressure torsion. Phys. Met. Metallogr... | Published 7 Sep...

423

E-Print Network 3.0 - aluminum sections le Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

for the vast bulk of this categories' electricity consumption. If all of the region's ten aluminum smelters Source: Northwest Power Planning Council Collection: Power...

424

E-Print Network 3.0 - aluminum alloy production Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: aluminum alloy production Page: << < 1 2 3 4 5 > >> 1 Introduction Within the course of the...

425

E-Print Network 3.0 - aluminum alloy processed Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: aluminum alloy processed Page: << < 1 2 3 4 5 > >> 1 Introduction Within the course of the...

426

E-Print Network 3.0 - aluminum nitride thin Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

thin Search Powered by Explorit Topic List Advanced Search Sample search results for: aluminum nitride thin Page: << < 1 2 3 4 5 > >> 1 Packaging Design for Lawrence Berkeley...

427

Ignition characteristics of laser-ablated aluminum at shock pressures up to 2?GPa  

SciTech Connect (OSTI)

The ignition of aluminum particles under high pressure and temperature conditions is considered. The laser ablation method is used to generate oxide-free aluminum particles exposed to pressures ranging between 0.35 and 2.2?GPa. A continuous wave CO{sub 2} laser radiation heats the surface of the aluminum target until ignition is observed. We confirm ignition by a spectroscopic analysis of AlO vibronic band of 484?nm wavelength, and the radiant temperature is measured with respect to various pressures for estimating the heating energy for ignition. The ignition characteristics of the oxide-free aluminum particles exposed to extremely high pressures are reported.

Lee, Kyung-Cheol; Young Lee, Jae; Yoh, Jack J., E-mail: jjyoh@snu.ac.kr [Department of Mechanical and Aerospace Engineering, Seoul National University, 1 Gwanakro, Gwanakgu, Seoul 151-742 (Korea, Republic of); Taira, Tsubasa [Division of Applied Physics, Hokkaido University, Sapporo (Japan); Mo Koo, Goon [Department of Aerospace Engineering, University of Maryland, College Park, Maryland 20742 (United States)

2014-01-07T23:59:59.000Z

428

E-Print Network 3.0 - aluminum oxide aperture Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Search Powered by Explorit Topic List Advanced Search Sample search results for: aluminum oxide aperture Page: << < 1 2 3 4 5 > >> 1 EFFECTS OF INTERFERENCE AND OXIDATION ON...

429

Laboratory and field corrosion test results on aluminum-transition-steel systems on automobiles  

SciTech Connect (OSTI)

Use of steel clad aluminum transition material to join aluminum body panels and structural members to steel is demonstrated. The transition material allows joining of aluminum and steel by conventional techniques such as spot welding and eliminates galvanic corrosion at the joints. Corrosion test results for a wide range of aluminum-transition-steel systems in laboratory tests, atmospheric exposure, and field test plates are presented. The break strength of joints containing two, three, or four members was used as a measure of performance after corrosion testing. Statistical analysis of the results showed that the transition material prevented degradation of the mechanical properties of the joints.

Haynes, G.; Baboian, R. [Texas Instruments Inc., Attleboro, MA (United States). Electrochemical and Corrosion Lab.

1995-11-01T23:59:59.000Z

430

E-Print Network 3.0 - aluminum hydroxide gel Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

phosphate conversion coatings on aluminum ... Source: Chung, Deborah D.L. - Department of Mechanical and Aerospace Engineering, State University of New York at Buffalo Collection:...

431

E-Print Network 3.0 - aluminum garnet yag Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Collection: Materials Science 49 A nearly ideal phosphor-converted white light-emitting diode Steven C. Allen and Andrew J. Steckla Summary: aluminum garnet YAG :Ce powder...

432

E-Print Network 3.0 - aluminum coatings Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

is currently... will elucidate the corrosion initiation mechanisms on coated aluminum alloy substrates, as well as determine... -polymer coatings may make them suitable for...

433

E-Print Network 3.0 - aluminum alloy eroded Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

the calibration procedure for aluminum alloy 2024-T351 using a recently developed damage... ; damage plasticity theory; constitutive behavior; elastic- plastic material; ......

434

E-Print Network 3.0 - aluminum cold wire Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

to understanding and maintaining your home's electrical system Summary: susceptible to damage from aging and faulty renovations. aluminum Wiring: 1960s-1970s As the price of...

435

E-Print Network 3.0 - aluminum nitride coatings Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

nitride... was attributed to the formation of a layer of aluminum ... Source: zur Loye, Hans-Conrad - Department of Chemistry and Biochemistry, University of South Carolina...

436

E-Print Network 3.0 - aluminum powder mixtures Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4210: Manufacturing Processes and Engineering Summary: .S. Colton GIT 2009 17 12;Compacting Pressures for Various Metal Powders P Metal Pressure (MPa) Aluminum... Metal Powder...

437

E-Print Network 3.0 - aluminum stress induces Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: the interaction is maximal. For many systems, including aluminum alloys, the flow stress is however considered... Equation Chapter 4 Section 1Chapter 4...

438

E-Print Network 3.0 - aluminum compounds Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

bulk of this categories' electricity consumption. If all of the region's ten aluminum smelters Source: Northwest Power Planning Council Collection: Power Transmission,...

439

Continuous Severe Plastic Deformation Processing of Aluminum Alloys  

SciTech Connect (OSTI)

Metals with grain sizes smaller than 1-micrometer have received much attention in the past decade. These materials have been classified as ultra fine grain (UFG) materials (grain sizes in the range of 100 to 1000-nm) and nano-materials (grain size <100-nm) depending on the grain size. This report addresses the production of bulk UFG metals through the use of severe plastic deformation processing, and their subsequent use as stock material for further thermomechanical processing, such as forging. A number of severe plastic deformation (SPD) methods for producing bulk UFG metals have been developed since the early 1990s. The most promising of these processes for producing large size stock that is suitable for forging is the equal channel angular extrusion or pressing (ECAE/P) process. This process involves introducing large shear strain in the work-piece by pushing it through a die that consists of two channels with the same cross-sectional shape that meet at an angle to each other. Since the cross-sections of the two channels are the same, the extruded product can be re-inserted into the entrance channel and pushed again through the die. Repeated extrusion through the ECAE/P die accumulates sufficient strain to breakdown the microstructure and produce ultra fine grain size. It is well known that metals with very fine grain sizes (< 10-micrometer) have higher strain rate sensitivity and greater elongation to failure at elevated temperature, exhibiting superplastic behavior. However, this superplastic behavior is usually manifest at high temperature (> half the melting temperature on the absolute scale) and very low strain rates (< 0.0001/s). UFG metals have been shown to exhibit superplastic characteristics at lower temperature and higher strain rates, making this phenomenon more practical for manufacturing. This enables part unitization and forging more complex and net shape parts. Laboratory studies have shown that this is particularly true for UFG metals produced by SPD techniques. This combination of properties makes UFG metals produced by SPD very attractive as machining, forging or extrusion stock, both from the point of view of formability as well as energy and cost saving. However, prior to this work there had been no attempt to transfer these potential benefits observed in the laboratory scale to industrial shop floor. The primary reason for this was that the laboratory scale studies had been conducted to develop a scientific understanding of the processes that result in grain refinement during SPD. Samples that had been prepared in the laboratory scale were typically only about 10-mm diameter and 50-mm long (about 0.5-inch diameter and 2-inches long). The thrust of this project was three-fold: (i) to show that the ECAE/P process can be scaled up to produce long samples, i.e., a continuous severe plastic deformation (CSPD) process, (ii) show the process can be scaled up to produce large cross section samples that could be used as forging stock, and (iii) use the large cross-section samples to produce industrial size forgings and demonstrate the potential energy and cost savings that can be realized if SPD processed stock is adopted by the forging industry. Aluminum alloy AA-6061 was chosen to demonstrate the feasibility of the approach used. The CSPD process developed using the principles of chamber-less extrusion and drawing, and was demonstrated using rolling and wire drawing equipment that was available at Oak Ridge National Laboratory. In a parallel effort, ECAE/P dies were developed for producing 100-mm square cross section SPD billets for subsequent forging. This work was carried out at Intercontinental Manufacturing Co. (IMCO), Garland TX. Forging studies conducted with the ECAE/P billets showed that many of the potential benefits of using UFG material can be realized. In particular, the material yield can be increased, and the amount of material that is lost as scrap can be reduced by as much as 50%. Forging temperatures can also be reduced by over 150C, resulting in energy savings in the ope

Raghavan Srinivasan (PI); Prabir K. Chaudhury; Balakrishna Cherukuri; Qingyou Han; David Swenson; Percy Gros

2006-06-30T23:59:59.000Z

440

Microstructural issues in a friction-stir-welded aluminum alloy  

SciTech Connect (OSTI)

Recent observations of microstructures associated with friction-stir welding (FSW) in a number of aluminum alloys have consistently demonstrated the actual weld zone to consist of a (dynamically) recrystallized grain structure resulting from the extreme, solid-state, plastic deformation characterizing the process. Because of solubilities associated with the various precipitates in 7075 and 6061 aluminum alloys, and the fact that the precipitates were either homogeneously distributed throughout both the original (unwelded) work-piece plates and the well zones (or formed varying densities of Widmanstaetten patterns within the original and recrystallized grains), it has been difficult to follow the stirring of stable, second-phase particles from the base metal (work-piece) into the weld zone. In the present investigation, a compositionally modified 1100 aluminum alloy (nominally 99.2% Al, 0.5% Fe, 0.15% Cu, 0.12% Si, 0.05 Mn, 0.04 Ti, balance in weight percent of Be and Mg), forming a stable microdendritic (second-phase), equiaxed, cell structure was friction-stir welded. These thermally stable, geometrically specific, precipitates in the base metal were compared with their disposition within the friction-stir-weld zone. In addition, as-cast plates of this alloy were cold-rolled 50% and friction-stir-welded in order to compare these two schedules (as-cast and 50% cold-rolled) in terms of residual hardness variations and related microstructural issues as well as the effect of prior deformation on the friction-stir welding process.

Flores, O.V.; Kennedy, C.; Murr, L.E.; Brown, D.; Pappu, S.; Nowak, B.M.; McClure, J.C. [Univ. of Texas, El Paso, TX (United States)] [Univ. of Texas, El Paso, TX (United States)

1998-02-03T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

Standard specification for nuclear-grade aluminum oxide pellets  

E-Print Network [OSTI]

1.1 This specification applies to pellets of aluminum oxide that may be ultimately used in a reactor core, for example, as filler or spacers within fuel, burnable poison, or control rods. In order to distinguish between the subject pellets and burnable poison pellets, it is established that the subject pellets are not intended to be used as neutron-absorbing material. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

American Society for Testing and Materials. Philadelphia

2008-01-01T23:59:59.000Z

442

Evaluation of the corrosion properties of aluminum alloy 5083 weldments  

SciTech Connect (OSTI)

Susceptibility of the weldment to exfoliation corrosion was evaluated by the Ammonium Salt Solution Exfoliation Test (ASSET). The samples exfoliated in the base metal, but did not exfoliate in the weld metal or the HAZ. The ASSET demonstrates that electron-beam welding the aluminum alloy 5083 reduces the susceptibility to exfoliation corrosion in the HAZ. Two other samples were tested for susceptibility to intergranular corrosion by the Nitric Acid Weight Loss Test (NAWLT). The average weight loss was 167 mg/in./sup 2/ and the loss was associated with the attack that occurred in the base metal. The weld metal and HAZ were essentially unattacked.

Stanaland, V.A.; Dillon, J.J.; Holbert, R.K. Jr.

1984-11-05T23:59:59.000Z

443

The Effect of Impurities on the Processing of Aluminum Alloys  

SciTech Connect (OSTI)

For this Aluminum Industry of the Future (IOF) project, the effect of impurities on the processing of aluminum alloys was systematically investigated. The work was carried out as a collaborative effort between the Pennsylvania State University and Oak Ridge National Laboratory. Industrial support was provided by ALCOA and ThermoCalc, Inc. The achievements described below were made. A method that combines first-principles calculation and calculation of phase diagrams (CALPHAD) was used to develop the multicomponent database Al-Ca-K-Li-Mg-Na. This method was extensively used in this project for the development of a thermodynamic database. The first-principles approach provided some thermodynamic property data that are not available in the open literature. These calculated results were used in the thermodynamic modeling as experimental data. Some of the thermodynamic property data are difficult, if not impossible, to measure. The method developed and used in this project allows the estimation of these data for thermodynamic database development. The multicomponent database Al-Ca-K-Li-Mg-Na was developed. Elements such as Ca, Li, Na, and K are impurities that strongly affect the formability and corrosion behavior of aluminum alloys. However, these impurity elements are not included in the commercial aluminum alloy database. The process of thermodynamic modeling began from Al-Na, Ca-Li, Li-Na, K-Na, and Li-K sub-binary systems. Then ternary and higher systems were extrapolated because of the lack of experimental information. Databases for five binary alloy systems and two ternary systems were developed. Along with other existing binary and ternary databases, the full database of the multicomponent Al-Ca-K-Li-Mg-Na system was completed in this project. The methodology in integrating with commercial or other aluminum alloy databases can be developed. The mechanism of sodium-induced high-temperature embrittlement (HTE) of Al-Mg is now understood. Using the thermodynamic database developed in this project, thermodynamic simulations were carried out to investigate the effect of sodium on the HTE of Al-Mg alloys. The simulation results indicated that the liquid miscibility gap resulting from the dissolved sodium in the molten material plays an important role in HTE. A liquid phase forms from the solid face-centered cubic (fcc) phase (most likely at grain boundaries) during cooling, resulting in the occurrence of HTE. Comparison of the thermodynamic simulation results with experimental measurements on the high-temperature ductility of an Al-5Mg-Na alloy shows that HTE occurs in the temperature range at which the liquid phase exists. Based on this fundamental understanding of the HTE mechanism during processing of aluminum alloy, an HTE sensitive zone and a hot-rolling safe zone of the Al-Mg-Na alloys are defined as functions of processing temperature and alloy composition. The tendency of HTE was evaluated based on thermodynamic simulations of the fraction of the intergranular sodium-rich liquid phase. Methods of avoiding HTE during rolling/extrusion of Al-Mg-based alloys were suggested. Energy and environmental benefits from the results of this project could occur through a number of avenues: (1) energy benefits accruing from reduced rejection rates of the aluminum sheet and bar, (2) reduced dross formation during the remelting of the aluminum rejects, and (3) reduced CO2 emission related to the energy savings. The sheet and extruded bar quantities produced in the United States during 2000 were 10,822 and 4,546 million pounds, respectively. It is assumed that 50% of the sheet and 10% of the bar will be affected by implementing the results of this project. With the current process, the rejection rate of sheet and bar is estimated at 5%. Assuming that at least half of the 5% rejection of sheet and bar will be eliminated by using the results of this project and that 4% of the aluminum will be lost through dross (Al2O3) during remelting of the rejects, the full-scale industrial implementation of the project results would lead to energy

Zi-Kui Liu; Shengjun Zhang; Qingyou Han; Vinod Sikka

2007-04-23T23:59:59.000Z

444

The Pricing of Electricity to Aluminum Smelters in the Northwest  

E-Print Network [OSTI]

" THE PRICING OF ELECTRICITY,TO ALUMINUM SMELTERS IN THE NORTHWEST Thomas J. Foley Northwest Power Planning Counc'l Portland, Oregon The Bonneville Power Administration IS a federal agency marketing electriC power in the Pacific Northwest... aiumlnurT' companies are facing lower electriCity prices In other parts 01 tne worid. thE Northwest plants have become "swlng" plants. That IS wner. tne world pnce of aiumlnum is high. these plants will rur. at capac,y but tney are the first plants...

Foley, T. J.

445

Thermodynamic Model of Aluminum Combustion in SDF Explosions  

SciTech Connect (OSTI)

Thermodynamic states encountered during combustion of Aluminum powder in Shock-Dispersed-Fuel (SDF) explosions were analyzed with the Cheetah code. Results are displayed in the Le Chatelier diagram: the locus of states of specific internal energy versus temperature. Accuracy of the results was confirmed by comparing the fuel and products curves with the heats of detonation and combustion, and species composition as measured in bomb calorimeter experiments. Results were fit with analytic functions u = f(T) suitable for specifying the thermodynamic properties required for gas-dynamic models of combustion in explosions.

Kuhl, . L

2006-06-19T23:59:59.000Z

446

Synthesizing aluminum particles towards controlling electrostatic discharge ignition sensitivity  

SciTech Connect (OSTI)

Aluminum particles were synthesized with shell thicknesses ranging from 2.7 to 8.3 nm and a constant diameter of 95 nm. These fuel particles were combined with molybdenum trioxide particles and the electrostatic discharge (ESD) sensitivity of the mixture was measured. Results show ignition delay increased as the alumina shell thickness increased. These results correlated with electrical resistivity measurements of the mixture which increased with alumina concentration. A model was developed using COMSOL for ignition of a single Al particle. The ignition delay in the model was consistent with the experimental results suggesting that the primary ESD ignition mechanism is joule heating.

Eric S. Collins; Jeffery P. Gesner; Michelle L. Pantoya; Michael A. Daniels

2014-02-01T23:59:59.000Z

447

Aluminum nitride nanophotonic circuits operating at ultraviolet wavelengths  

SciTech Connect (OSTI)

Aluminum nitride (AlN) has recently emerged as a promising material for integrated photonics due to a large bandgap and attractive optical properties. Exploiting the wideband transparency, we demonstrate waveguiding in AlN-on-Insulator circuits from near-infrared to ultraviolet wavelengths using nanophotonic components with dimensions down to 40?nm. By measuring the propagation loss over a wide spectral range, we conclude that both scattering and absorption of AlN-intrinsic defects contribute to strong attenuation at short wavelengths, thus providing guidelines for future improvements in thin-film deposition and circuit fabrication.

Stegmaier, M.; Ebert, J.; Pernice, W. H. P., E-mail: wolfram.pernice@kit.edu [Institute of Nanotechnology, Karlsruhe Institute of Technology, 76133 Karlsruhe (Germany); Meckbach, J. M.; Ilin, K.; Siegel, M. [Institute of Micro- und Nanoelectronic Systems, Karlsruhe Institute of Technology, 76187 Karlsruhe (Germany)

2014-03-03T23:59:59.000Z

448

Measuring Radiation Damage from Heavy Energetic Ions in Aluminum  

SciTech Connect (OSTI)

An intense beam of 122 MeV/u (9.3 GeV) 76Ge ions was stopped in aluminum samples at the Coupled Cyclotron Facility at NSCL, MSU. Attempts were made at ORNL to measure changes in material properties by measuring changes in electrical resistivity and microhardness, and by transmission electron microscopy characterization, for defect density caused by radiation damage, as a function of depth and integrated ion flux. These measurements are relevant for estimating damage to components at a rare isotope beam facility.

Kostin, M., PI-MSU; Ronningen, R., PI-MSU; Ahle, L., PI-LLNL; Gabriel, T., Scientific Investigation and Development; Mansur, L., PI-ORNL; Leonard, K., ORNL; Mokhov, N., FNAL; Niita, K., RIST, Japan

2009-02-21T23:59:59.000Z

449

Climate VISION: Private Sector Initiatives: Aluminum: Technology Pathways  

Office of Scientific and Technical Information (OSTI)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation In closing,-- Energy, science, and technologyResults The AluminumTechnology

450

The corrosion of aluminum in boric acid solutions  

E-Print Network [OSTI]

by corrosion of equipment Such is the case with many nuclear reactor installations, Because of the high neutron absorbtivity of boron, boron and 1ts compounds are used in the control of nuclear reactors. Boric acid 1n solution is a convenient means... to convey the boric acid solutions into the nuclear reactor. The damage to the nuclear reactor resulting from a failure in the aluminum tubing within the reactor would' of course, be very great. Mere the tubing to fa11 outside the reactor efforts...

Bass, Henry Kinsolving

1956-01-01T23:59:59.000Z

451

ParaView at NERSC  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratorySpeedingOptimizingToolsto control intensePageveterans4 - ParaView

452

Molecular Orbital Study of the First Excited State of the OLED Material Tris(8-hydroxyquinoline)aluminum(III)  

E-Print Network [OSTI]

Molecular Orbital Study of the First Excited State of the OLED Material Tris(8-hydroxyquinoline)aluminum, Michigan 48202 Received February 6, 2001. Revised Manuscript Received May 16, 2001 Tris(8-hydroxyquinoline)aluminum

Schlegel, H. Bernhard

453

Interaction of an aluminum atom with a closed subshell metal atom: Spectroscopic analysis of AlZn  

E-Print Network [OSTI]

Interaction of an aluminum atom with a closed subshell metal atom: Spectroscopic analysis of Al-block main group element, aluminum, and the 3d series of transi- tion metal atoms. Although the bonding in Al

Morse, Michael D.

454

Electrical and mechanical studies of high purity aluminum single crystals at 4.2 K under cyclic strain  

E-Print Network [OSTI]

The objective of this research is to investigate the effects of orientation on strain hardening and resistivity degradation in high purity aluminum single crystals resulting from uniaxial cyclic strain at 4.2 K. Aluminum crystals with various...

Zou, Hong

1995-01-01T23:59:59.000Z

455

Identity of Passive Film Formed on Aluminum in Li-ion Battery Electrolytes with LiPF6  

E-Print Network [OSTI]

Film on Aluminum in Li-ion Battery Electrolytes with LiPFFormed on Aluminum in Li-ion Battery Electrolytes with LiPFbattery charging. From the prospective of maintaining a functioning cathode in Li-ion

Zhang, Xueyuan; Devine, T.M.

2008-01-01T23:59:59.000Z

456

The effect of fluoride and aluminum on the anion exchange of plutonium from nitric acid  

SciTech Connect (OSTI)

Anion exchange in nitric acid is a prominent aqueous process used to recover and purify plutonium from impure nuclear materials. This process is sensitive to fluoride ion, which complexes plutonium in competition with the anionic nitrato complex that is strongly sorbed on the anion exchange column. Fluoride interference traditionally has been counteracted by adding a masking agent, such as aluminum, that forms competing complexes with fluoride. The interfering effect of fluoride is known to be a function not only of the fluoride-to-aluminum ratio but also of the fluoride-to-plutonium ratio. This report summarizes a Los Alamos study of the effect of 25 fluoride-aluminum-plutonium conmbinations on the anion exchange sorption of plutonium. Five aluminum-to-plutonium ratios ranging from 0.10 to 10 were each evaluated at five fluoride-to-aluminum ratios that ranged from 0 to 6. The fluoride-to-plutonium ratio has a greater influence on plutonium sorption than does the fluoride-to-aluminum ratio. Aluminum was less effective as a masking agent than had been assumed, because measurable fluoride interference occurred at all levels of added aluminum.

Marsh, S.F.

1987-07-01T23:59:59.000Z

457

Corrosion of aluminum alloy 2024 belonging to the 1930s in seawater environment  

E-Print Network [OSTI]

seawater, conserve it, and display it in its museum, as part of their rich heritage. The objective was to study the aluminum alloy used on the aircraft for its chemical and mechanical properties, suggest the corrosion mechanism of aluminum alloy 2024...

Gujarathi, Kedar Kanayalal

2009-05-15T23:59:59.000Z

458

Hot tearing test for TIG welding of aluminum alloys: application of a stress parallel to the  

E-Print Network [OSTI]

Page 1 Hot tearing test for TIG welding of aluminum alloys: application of a stress parallel or solidification cracking, in aluminum alloys welding is an important industrial issue and must be carefully the parameters leading to hot tearing during welding. The originality of the test presented here

Paris-Sud XI, Université de

459

Hot tearing test for TIG welding of aluminum alloys: application of a stress parallel to the  

E-Print Network [OSTI]

Page 1 Hot tearing test for TIG welding of aluminum alloys: application of a stress parallel in aluminum alloys welding is an important industrial issue. Understanding of hot cracking phenomenon welding. The originality of the test presented here is that an external stress is applied on the test

Paris-Sud XI, Université de

460

HYDROGEN EFFECTS ON THE CHARACTER OF DISLOCATIONS IN HIGH-PURITY ALUMINUM  

E-Print Network [OSTI]

reserved. Keywords: Transmission electron microscopy (TEM); Aluminum; Hydrogen embrittlement; Dislocation to hydrogen embrittlement. From observations of slip lines on surfaces, it has been reported that soluteHYDROGEN EFFECTS ON THE CHARACTER OF DISLOCATIONS IN HIGH-PURITY ALUMINUM P. J. FERREIRA{, I. M

Ferreira, Paulo J.

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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

J. Am. Cerum. SOC., 72 [5] 775-80 (1989) Processingof Boron Carbide-Aluminum Composites  

E-Print Network [OSTI]

J. Am. Cerum. SOC., 72 [5] 775-80 (1989) journal Processingof Boron Carbide-Aluminum Composites, Universityof California, Livermore, California 94550 The processing problems associated with boron carbide carbide, aluminum, processing, cermets.] I. Introduction ORON CARBIDE (B4C)+is a very hard (9.5+ in Mohs

Aksay, Ilhan A.

462

TTUAB PLASTIC & ALUMINUM RECYCLING PROTOCOL Fall 2012 What Plastic Do We Recycle?  

E-Print Network [OSTI]

TTUAB PLASTIC & ALUMINUM RECYCLING PROTOCOL ­ Fall 2012 What Plastic Do We Recycle? TTUAB has taken on the responsibility of recycling #1 PET and #2 HDPE plastics by placing a yellow TTUAB Plastic Recycling bin on each. Technically, we are only responsible for aforementioned plastics and aluminum. However, any trash or other

Rock, Chris

463

TTUAB PLASTIC & ALUMINUM RECYCLING PROTOCOL 2013 What Plastic Do We Recycle?  

E-Print Network [OSTI]

TTUAB PLASTIC & ALUMINUM RECYCLING PROTOCOL 2013 What Plastic Do We Recycle? TTUAB has taken on the responsibility of recycling ALL plastics (#1 through #7) by placing a yellow TTUAB Plastic Recycling bin on each and in LH100. Technically, we are only responsible for aforementioned plastics and aluminum. However, any

Rock, Chris

464

Examination of the corrosion behavior of aluminum current collectors in lithium/polymer batteries  

SciTech Connect (OSTI)

The corrosion behavior of aluminum, a candidate material for the current collectors of the positive electrodes of lithium-polymer batteries, in contact with a lithium polymer electrolyte was examined in both batteries and three-electrode electrochemical cells. The results indicate aluminum is resistant to uniform corrosion in the polymer electrolyte: poly(ethylene oxide)-LiN(CF{sub 3}SO{sub 2}){sub 2} but can be susceptible to pitting corrosion. Localized pitting corrosion occurs on the aluminum current collector during overcharging of the battery. Pitting corrosion only occurred in the electrochemical cells when the aluminum electrode was anodically polarized to potentials that were considerably greater than those that resulted in pitting corrosion in batteries. The greater susceptibility of the aluminum current collectors of batteries to pitting corrosion is attributed to inhomogeneous current flow through the current collector. This results in local breakdown of the passive film on aluminum at sites of locally high current density. The inhomogeneous current density that flows through the aluminum/cathode interface is caused by the presence of discrete paths through the cathode with low electrical resistance. In an effort to improve the localized corrosion behavior of aluminum electrodes, it was found that surfaces impregnated by ion implantation with {approximately}20 atom % tungsten exhibited enhanced resistance to pitting corrosion in poly(ethylene oxide)-LiN(CF{sub 3}SO{sub 2}){sub 2}.

Chen, Y.; Devine, T.M.; Evans, J.W. [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technology Div.] [Lawrence Berkeley National Lab., CA (United States). Environmental Energy Technology Div.; [Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering; Monteiro, O.R.; Brown, I.G. [Lawrence Berkeley National Lab., CA (United States). Accelerator and Fusion Research Div.] [Lawrence Berkeley National Lab., CA (United States). Accelerator and Fusion Research Div.

1999-04-01T23:59:59.000Z

465

Fracture response of externally flawed aluminum cylindrical shells under internal gaseous detonation loading  

E-Print Network [OSTI]

Fracture response of externally flawed aluminum cylindrical shells under internal gaseous. Experiments were performed to observe the fracture behavior of thin- wall and initially-flawed aluminum tubes to different fracture events are analyzed. Keywords: tube fracture, detonation, crack branching, crack curving

Barr, Al

466

ALUMINUM SITING IN THE ZSM-22 AND THETA-1 ZEOLITES REVISITED: A QM/MM STUDY  

E-Print Network [OSTI]

ALUMINUM SITING IN THE ZSM-22 AND THETA-1 ZEOLITES REVISITED: A QM/MM STUDY Stepan SKLENAKa1. 73, Nos. 6­7, pp. 909­920 Aluminum Siting in the ZSM-22 and Theta-1 Zeolites Revisited 909 © 2008

Sklenak, Stepan

467

ccsd00001116 Nucleation of Al 3 Zr and Al 3 Sc in aluminum alloys  

E-Print Network [OSTI]

ccsd­00001116 (version 1) : 4 Feb 2004 Nucleation of Al 3 Zr and Al 3 Sc in aluminum alloys: from 4, 2004) Zr and Sc precipitate in aluminum alloys to form the compounds Al3Zr and Al3Sc which

468

Synthesis and use of (polyfluoroaryl)fluoroanions of aluminum, gallium and indium  

DOE Patents [OSTI]

Salts of (polyfluoroaryl)fluoroanions of aluminum, gallium, and indium are described. The (polyfluoroaryl)fluoroanions have the formula [ER'R"R'"F].sup..crclbar. wherein E is aluminum, gallium, or indium, wherein F is fluorine, and wherein R', R", and R'" is each a fluorinated phenyl, fluorinated biphenyl, or fluorinated polycyclic group.

Marks, Tobin J. (Evanston, IL); Chen, You-Xian (Midland, MI)

2000-01-01T23:59:59.000Z

469

The Metabolism of Aluminum Citrate and Biosynthesis of Oxalic Acid in Pseudomonas fluorescens  

E-Print Network [OSTI]

bioavailability of aluminum triggered by in- dustrialization and acid rain [20]. The presence of organic acidsThe Metabolism of Aluminum Citrate and Biosynthesis of Oxalic Acid in Pseudomonas fluorescens Vasu-citrate) was metabolized intracellularly and that oxalic acid was an important product in the Al-stressed cells

Appanna, Vasu

470

Corrosion of aluminum-uranium alloys in water vapor at 200 C  

SciTech Connect (OSTI)

Specimens of aluminum-uranium alloys at 10 and 18 wt.% uranium were exposed to a saturated water vapor condition at 200 C up to about 12 weeks and compared to previous results for aluminum 1100. The aluminum-uranium materials exhibited a range of initial corrosion rates and approached similar rates with the formation of a passive film of boehmite (Al{sub 2}O{sub 3}{center{underscore}dot}H{sub 2}O). The initial corrosion rates of the aluminum-uranium materials were one to four times higher than that for aluminum 1100. It is postulated that a micro-galvanic coupling between the large UAl{sub 4} particles and the aluminum matrix has caused this difference. Sectioning the exposed specimens shows different characteristics of the oxide layers. In the oxide on the aluminum-10% uranium alloy (Al-10%U), small uranium aluminide particles can be seen in a boehmite matrix and do not seem to be corroded. The oxide film on the aluminum-18% uranium alloy (Al-18%U) appears to have two distinct oxide layers. The outer layer has mass aggregates in a boehmite matrix, while the inner layer contains UAl{sub 4} particles as in the case of Al-10%U.

Lam, P.S.; Sindelar, R.L.; Barrett, K.Y.

1999-07-01T23:59:59.000Z

471

Corrosion of Aluminum-Uranium Alloys in Water Vapor at 200\\260C  

SciTech Connect (OSTI)

Coupons of aluminum-uranium alloys at 10 and 18 weight percent were exposed to a saturated water vapor condition at 200 degrees C up to about 1500 hours and compared to previous results for aluminum 1100. The aluminum-uranium materials exhibited a range of initial corrosion rates and approached similar rates with the formation of a passive film of boehmite (Al2O3oH2O). The cast and extruded 10 percent uranium, having a primary aluminum-eutectic microstructure, was more corrosion resistant than the 18% cast and extruded. The initial corrosion rates of the aluminum-uranium materials were one to four times higher than that for aluminum 1100. It is postulated that a micro-galvanic coupling between the large UAl4 particles and the aluminum matrix has caused the variation. Sectioning the exposed specimens shows different characteristics of the oxide layers. In the case of the cast and extruded Al-10 percent U alloy, small uranium aluminide particles can be seen in the boehmite matrix and do not seem to be corroded. The oxide film of the Al-18 percent U alloy appears to have two distinct oxide layers. The outer layer has mass aggregates formed in the aluminum oxide matrix, while the inner layer contains UAl4 particles as in the case of Al-10 percent U

Lam, P.S.

1998-11-25T23:59:59.000Z

472

Fluoride, aluminum, and phosphate kinetics in cryolite workers  

SciTech Connect (OSTI)

Exposure to cryolite (Na3AlF6) dust may result in skeletal fluorosis. Eight male workers at a cryolite concentrator participated in a 4-day study after 5 days of vacation. Dust exposures were 0.16 to 21.2 mg/m3. Urine was collected before work began and during two 4-hour periods. Preshift urine fluoride concentrations increased during the week. Fluoride concentrations in postshift urine and serum both correlated with the dust exposures. Serum fluoride concentrations decreased with a half-life of 3.3 to 6.9 hours after work. Fluoride clearance was 40.5 to 76.5 mL/min at urinary flow rates of 0.89 to 2.21 mL/min. Serum aluminum concentrations varied without relation to the exposure, but the urinary aluminum excretion correlated with the fluoride levels. Preshift serum-phosphate concentrations increased significantly during the week, possibly indicating changes in mineral metabolism. For monitoring of individual uptake of cryolite dust, serum fluoride measurements are most useful.

Grandjean, P.; Horder, M.; Thomassen, Y. (Odense Univ. (Denmark))

1990-01-01T23:59:59.000Z

473

Rechargeable aluminum batteries with conducting polymers as positive electrodes.  

SciTech Connect (OSTI)

This report is a summary of research results from an Early Career LDRD project con-ducted from January 2012 to December 2013 at Sandia National Laboratories. Demonstrated here is the use of conducting polymers as active materials in the posi-tive electrodes of rechargeable aluminum-based batteries operating at room tempera-ture. The battery chemistry is based on chloroaluminate ionic liquid electrolytes, which allow reversible stripping and plating of aluminum metal at the negative elec-trode. Characterization of electrochemically synthesized polypyrrole films revealed doping of the polymers with chloroaluminate anions, which is a quasi-reversible reac-tion that facilitates battery cycling. Stable galvanostatic cycling of polypyrrole and polythiophene cells was demonstrated, with capacities at near-theoretical levels (30-100 mAh g-1) and coulombic efficiencies approaching 100%. The energy density of a sealed sandwich-type cell with polythiophene at the positive electrode was estimated as 44 Wh kg-1, which is competitive with state-of-the-art battery chemistries for grid-scale energy storage.

Hudak, Nicholas S.

2013-12-01T23:59:59.000Z

474

Radiation tolerance of piezoelectric bulk single-crystal aluminum nitride  

SciTech Connect (OSTI)

For practical use in harsh radiation environments, we pose selection criteria for piezoelectric materials for nondestructive evaluation (NDE) and material characterization. Using these criteria, piezoelectric aluminum nitride is shown to be an excellent candidate. The results of tests on an aluminumnitride-based transducer operating in a nuclear reactor are also presented. We demonstrate the tolerance of single-crystal piezoelectric aluminum nitride after fast and thermal neutron fluences of 1.85 1018 neutron/cm2 and 5.8 1018 neutron/cm2, respectively, and a gamma dose of 26.8 MGy. The radiation hardness of AlN is most evident from the unaltered piezoelectric coefficient d33, which measured 5.5 pC/N after a fast and thermal neutron exposure in a nuclear reactor core for over 120 MWh, in agreement with the published literature value. The results offer potential for improving reactor safety and furthering the understanding of radiation effects on materials by enabling structural health monitoring and NDE in spite of the high levels of radiation and high temperatures, which are known to destroy typical commercial ultrasonic transducers.

David A. Parks; Bernhard R. Tittmann

2014-07-01T23:59:59.000Z

475

Process for mitigating corrosion and increasing the conductivity of steel studs in soderberg anodes of aluminum reduction cells  

DOE Patents [OSTI]

A corrosion resistant electrically conductive coating on steel anode studs used in the production of aluminum by electrolysis.

Oden, Laurance L. (Albany, OR); White, Jack C. (Albany, OR); Ramsey, James A. (The Dalles, OR)

1994-01-01T23:59:59.000Z

476

Standard test method for visual assessment of exfoliation corrosion susceptibility of 5XXX series aluminum alloys (ASSET Test)  

E-Print Network [OSTI]

Standard test method for visual assessment of exfoliation corrosion susceptibility of 5XXX series aluminum alloys (ASSET Test)

American Society for Testing and Materials. Philadelphia

2005-01-01T23:59:59.000Z

477

Effect of fulvic acid on the kinetics of aluminum fluoride complexation in acidic waters  

SciTech Connect (OSTI)

Both fluoride ion and fulvic acid are important aluminum binding ligands present in soil and surface waters. As such they play a role in the speciation and toxicity of natural waters that have increased aluminum concentration due to acid precipitation. We report here a kinetic study of aluminum complexation in the presence of both of these naturally occurring ligands. An overall mechanism has been identified and rate constants have been obtained for several of the reactions involved. We find that an a priori model of the two ligands in competition for aluminum is incorrect. In fact, the rate of fluoride ion consumption is increased by the presence of fulvic acid. Evidence is presented that this effect is due to several equilibria, some of which involve mixed-ligand species. The important equilibria in this three-component system are identified and discussed, as are aluminum speciation and toxicity in acidic waters.

Plankey, B.J.; Patterson, H.H.

1988-12-01T23:59:59.000Z

478

Carbothermic reduction and prereduced charge for producing aluminum-silicon alloys  

DOE Patents [OSTI]

Disclosed is a method for the carbothermic reduction of aluminum oxide to form an aluminum alloy including producing silicon carbide by heating a first mix of carbon and silicon oxide in a combustion reactor to an elevated temperature sufficient to produce silicon carbide at an accelerated rate, the heating being provided by an in situ combustion with oxygen gas, and then admixing the silicon carbide with carbon and aluminum oxide to form a second mix and heating the second mix in a second reactor to an elevated metal-forming temperature sufficient to produce aluminum-silicon alloy. The prereduction step includes holding aluminum oxide substantially absent from the combustion reactor. The metal-forming step includes feeding silicon oxide in a preferred ratio with silicon carbide.

Stevenson, David T. (Washington Township, Armstrong County, PA); Troup, Robert L. (Murrysville, PA)

1985-01-01T23:59:59.000Z

479

Carbothermic reduction and prereduced charge for producing aluminum-silicon alloys  

DOE Patents [OSTI]

Disclosed is a method for the carbothermic reduction of aluminum oxide to form an aluminum alloy including producing silicon carbide by heating a first mix of carbon and silicon oxide in a combustion reactor to an elevated temperature sufficient to produce silicon carbide at an accelerated rate, the heating being provided by an in situ combustion with oxygen gas, and then admixing the silicon carbide with carbon and aluminum oxide to form a second mix and heating the second mix in a second reactor to an elevated metal-forming temperature sufficient to produce aluminum-silicon alloy. The prereduction step includes holding aluminum oxide substantially absent from the combustion reactor. The metal-forming step includes feeding silicon oxide in a preferred ratio with silicon carbide. 1 fig.

Stevenson, D.T.; Troup, R.L.

1985-01-01T23:59:59.000Z

480

Final Report - Melt Rate Enhancement for High Aluminum HLW Glass Formulation, VSL-08R1360-1, Rev. 0, dated 12/19/08  

SciTech Connect (OSTI)

The principal objective of the work reported here was to develop and identify HLW glass compositions that maximize waste processing rates for the aluminum limted waste composition specified by ORP while maintaining high waste loadings and acceptable glass properties. This was accomplished through a combination of crucible-scale tests, confirmation tests on the DM100 melter system, and demonstration at pilot scale (DM1200). The DM100-BL unit was selected for these tests since it was used previously with the HLW waste streams evaluated in this study, was used for tests on HLW glass compositions to support subsequent tests on the HLW Pilot Melter, conduct tests to determine the effect of various glass properties (viscosity and conductivity) and oxide concentrations on glass production rates with HLW feed streams, and to assess the volatility of cesium and technetium during the vitrification of an HLW AZ-102 composition. The same melter was selected for the present tests in order to maintain comparisons between the previously collected data. These tests provide information on melter processing characteristics and off-gas data, including formation of secondary phases and partitioning. Once DM100 tests were completed, one of the compositions was selected for further testing on the DM1200; the DM1200 system has been used for processing a variety of simulated Hanford waste streams. Tests on the larger melter provide processing data at one third of the scale of the actual WTP HLW melter and, therefore, provide a more accurate and reliable assessment of production rates and potential processing issues. The work focused on maximizing waste processing rates for high aluminum HLW compositions. In view of the diversity of forms of aluminum in the Hanford tanks, tests were also conducted on the DM100 to determine the effect of changes in the form of aluminum on feed properties and production rate. In addition, the work evaluated the effect on production rate of modest increases in melter operating temperature. Glass composition development was based on one of the HLW waste compositions specified by ORP that has a high concentration of aluminum. Small-scale tests were used to provide an initial screening of various glass formulations with respect to melt rates; more definitive screening was provided by the subsequent DM100 tests. Glass properties evaluated included: viscosity, electrical conductivity, crystallinity, gross glass phase separation and the 7- day Product Consistency Test (ASTM-1285). Glass property limits were based upon the reference properties for the WTP HLW melter. However, the WTP crystallinity limit (< 1 vol% at 950oC) was relaxed slightly as a waste loading constraint for the crucible melts.

Kruger, Albert A.; Pegg, I. L.; Chaudhuri, M.; Gong, W.; Gan, H.; Matlack, K. S.; Bardakci, T.; Kot, W.

2013-11-13T23:59:59.000Z

Note: This page contains sample records for the topic "6061-t6 aluminum view" 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.


481

Final Technical Report Microwave Assisted Electrolyte Cell for Primary Aluminum Production  

SciTech Connect (OSTI)

This research addresses the high priority research need for developing inert anode and wetted cathode technology, as defined in the Aluminum Industry Technology Roadmap and Inert Anode Roadmap, with the performance targets: a) significantly reducing the energy intensity of aluminum production, b) ultimately eliminating anode-related CO2 emissions, and c) reducing aluminum production costs. This research intended to develop a new electrometallurgical extraction technology by introducing microwave irradiation into the current electrolytic cells for primary aluminum production. This technology aimed at accelerating the alumina electrolysis reduction rate and lowering the aluminum production temperature, coupled with the uses of nickel based superalloy inert anode, nickel based superalloy wetted cathode, and modified salt electrolyte. Michigan Technological University, collaborating with Cober Electronic and Century Aluminum, conducted bench-scale research for evaluation of this technology. This research included three sub-topics: a) fluoride microwave absorption; b) microwave assisted electrolytic cell design and fabrication; and c) aluminum electrowinning tests using the microwave assisted electrolytic cell. This research concludes that the typically used fluoride compound for aluminum electrowinning is not a good microwave absorbing material at room temperature. However, it becomes an excellent microwave absorbing material above 550C. The electrowinning tests did not show benefit to introduce microwave irradiation into the electrolytic cell. The experiments revealed that the nickel-based superalloy is not suitable for use as a cathode material; although it wets with molten aluminum, it causes severe reaction with molten aluminum. In the anode experiments, the chosen superalloy did not meet corrosion resistance requirements. A nicked based alloy without iron content could be further investigated.

Xiaodi Huang; J.Y. Hwang

2007-04-18T23:59:59.000Z

482

ALUMINUM--2002 5.1 A reference that includes a section mark () is found in the Internet  

E-Print Network [OSTI]

1.5 million metric tons per year (Mt/yr) of domestic primary aluminum smelting capacity, equivalent to 35% of total capacity, was closed. Aluminum recovered from purchased scrap decreased slightly to 2 remained the largest markets for aluminum products in Canada and the United States in 2002

483

HIGH-EFFICIENCY BACK-JUNCTION SILICON SOLAR CELL WITH AN IN-LINE EVAPORATED ALUMINUM FRONT GRID  

E-Print Network [OSTI]

HIGH-EFFICIENCY BACK-JUNCTION SILICON SOLAR CELL WITH AN IN-LINE EVAPORATED ALUMINUM FRONT GRID M-diffused back-junction emitter. The aluminum front side grid is evaporated in an industrial-type in-thick silicon shadow masks for the in-line evaporation of the aluminum front grid. The masks are fabricated

484

Primary Aluminum Production: Climate Policy, Emissions and Costs Jochen Harnisch, Ian Sue Wing, Henry D. Jacoby and Ronald G. Prinn*  

E-Print Network [OSTI]

Primary Aluminum Production: Climate Policy, Emissions and Costs Jochen Harnisch, Ian Sue Wing a significant influence on investment decisions in the production of primary aluminum. This work demonstrates for the baseline years 1990 and 1995. We then present projections for regional emissions of PFCs from the aluminum

485

Co-sputtered Aluminum Doped Zinc Oxide Thin Film as Transparent Anode for Organic Light-emitting Diodes  

E-Print Network [OSTI]

Co-sputtered Aluminum Doped Zinc Oxide Thin Film as Transparent Anode for Organic Light and Technology, Clear Water Bay, Kowloon, Hong Kong, China ABSTRACT Aluminum doped zinc oxide (AZO that MTDATA matches better with AZO than CuPc, which served as hole injection layer. Keywords: Aluminum doped

486

Aluminum Triggers Decreased Aconitase Activity via Fe-S Cluster Disruption and the Overexpression of Isocitrate Dehydrogenase and  

E-Print Network [OSTI]

Aluminum Triggers Decreased Aconitase Activity via Fe-S Cluster Disruption and the Overexpression Research, Sudbury, Ontario P3E 6B4, Canada Although aluminum is known to be toxic to most or- ganisms, its that aluminum promotes the inhibition of aconitase (Acn) activity via the perturbation of the Fe-S cluster

Appanna, Vasu

487

ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR CELLS  

E-Print Network [OSTI]

ATOMIC-LAYER-DEPOSITED ALUMINUM OXIDE FOR THE SURFACE PASSIVATION OF HIGH-EFFICIENCY SILICON SOLAR to those measured on reference cells passivated by an aluminum-annealed thermal SiO2, while those of the Al of aluminum ox- ide (Al2O3) grown by atomic layer deposition (ALD) pro- vide an excellent level of sur

488

Aluminum and silica intake in drinking water and the risk of Alzheimer's disease or cognitive decline: findings of the  

E-Print Network [OSTI]

Aluminum and silica intake in drinking water and the risk of Alzheimer's disease or cognitive,2 , Commenges Daniel1,2 , Helmer Catherine2,3 , Jean-François Dartigues2,3 . Abbreviations: Al, Aluminum; AD, Alzheimer's Disease; MMSE, Mini Mental State Examination; Si, Silica Running head: Aluminum, silica in water

Paris-Sud XI, Université de

489

The Effect of Aluminum Content on the Corrosion Behavior of Fe-Al Alloys in Reducing Environments at 700 C  

E-Print Network [OSTI]

The Effect of Aluminum Content on the Corrosion Behavior of Fe-Al Alloys in Reducing Environments with the observance and/or duration of each stage directly related to the aluminum content of the alloy. The first by relatively high corrosion rates. Further decreasing the aluminum content to 5 wt pct and below lead

DuPont, John N.

490

Mechanical Properties of Aluminum Fluoride Glass Fibers James Colaizzi, M. John Matthewson, Tariq Iqbal, and Mahmoud R. Shahriari  

E-Print Network [OSTI]

#12;Mechanical Properties of Aluminum Fluoride Glass Fibers James Colaizzi, M. John Matthewson solutions of various pH values on the mechanical properties of polymer coated optical fibers of an aluminum to failure of the fiber. In static fatigue, the time to failure of the aluminum fluoride-based fibers

Matthewson, M. John

491

Patterned aluminum nanowires produced by electron beam at the surfaces of AlF3 single crystals  

E-Print Network [OSTI]

Patterned aluminum nanowires produced by electron beam at the surfaces of AlF3 single crystals C is demonstrated for fabricating patterned aluminum nanowires in AlF3 substrate in a scanning electron microscope nanowires of different sizes. The aluminum nanowires may act as nano- interconnects for nanoelectronics

Wang, Zhong L.

492

The definitive version is available at www.blackwell-synergy.com Analysis of the effect of aluminum in drinking water  

E-Print Network [OSTI]

of aluminum in drinking water and transferrin C2 allele on Alzheimer's disease. a Virginie Rondeau, b Albert.Rondeau@isped.u-bordeaux2.fr Key words: aluminum, drinking water, transferrin, apolipoprotein E, Alzheimer's disease Word of a link between aluminum in drinking water and Alzheimer's disease (AD) has been supported by several

Paris-Sud XI, Université de

493

Better Buildings Network View | November 2014 | Department of...  

Broader source: Energy.gov (indexed) [DOE]

November 2014 More Documents & Publications Better Buildings Network View | July-August 2014 Better Buildings Network View | December 2014 Better Buildings Network View | January...

494

The Better Buildings Neighborhood View - August 2012 | Department...  

Energy Savers [EERE]

The Better Buildings Neighborhood View - August 2012 The Better Buildings Neighborhood View - August 2012 The Better Buildings Neighborhood View monthly newsletter from the U.S....

495

Processing and microstructural evolution of alumina/aluminum alloy and aluminum nitride/aluminum alloy composites by directed melt oxidation. Ph.D. Thesis  

SciTech Connect (OSTI)

An experimental investigation on the directed oxidation of aluminum-zinc alloys to produce alumina/aluminum alloy composites with and without alumina preforms has been conducted. It has been suggested in the literature that Al-Mg alloys grow composites by the dissolution of a magnesia surface layer and reprecipitation of alumina in the composite. The intent of this investigation is to reveal relevant distinctions in the proposed dissolution-reprecipitation process as they apply to a more commercially interesting Zn containing alloy with a reinforcing preform. The TGA behavior and microstructural observations on the oxidation of Al-10Zn-8Si alloys were coupled with a thermodynamic and kinetic analysis to develop a composite growth model. Experiments were carried out in air at 1000-1200 C. At the higher temperatures (greater than 1100 C), Al2O3/Al composites grow by dissolving a ZnAl2O4 (spinel) surface layer. The dissolution process releases oxygen that reprecipitates in the form of Al2O3 on the existing composite, and also releases Zn and Al which migrate upward through the spinel to regenerate the surface oxide. Composite growth may only occur when the surface regenerates at a rate comparable with that of the dissolution process. At the lower temperatures, 1000 C, the composite growth is limited by the spinel regeneration process, and becomes intermittent. The addition of Mg to this alloy allows normal composite growth by the dissolution of a surface (Zn,Mg)Al2O4 layer at the lower temperatures, 980-1060 C, but leads to heterogeneous microstructures with voids as the temperature increases above approximately 1060 C. The directed oxidation of an Al-Zn alloy into porous alumina preforms yields an Al2O3/Al composite matrix which fills the preform interstices. Al-10Zn-8Si-0.25Mg alloys that are oxidized from 960-1100 C, and Al-10Zn-8Si alloys that are oxidized at 800-1000 C climb up the preform particle.

Crudele, S.D.

1994-12-31T23:59:59.000Z

496

Cosmology: a bird's eye view  

E-Print Network [OSTI]

In this essay we discuss the difference in views of the Universe as seen by two different observers. While one of the observers follows a geodesic congruence defined by the geometry of the cosmological model, the other observer follows the fluid flow lines of a perfect fluid with a linear equation of state. We point out that the information these observers collect regarding the state of the Universe can be radically different; while one observes a non-inflating ever-expanding ever-lasting universe, the other observer can experience a dynamical behaviour reminiscent to that of quintessence or even that of a phantom cosmology leading to a 'big rip' singularity within finite time (but without the need for exotic forms of matter).

Alan A. Coley; Sigbjorn Hervik; Woei Chet Lim

2006-05-15T23:59:59.000Z

497

TEST RESULTS FROM GAMMA IRRADIATION OF ALUMINUM OXYHYDROXIDES  

SciTech Connect (OSTI)

Hydrated metal oxides or oxyhydroxides boehmite and gibbsite that can form on spent aluminum-clad nuclear fuel assemblies during in-core and post-discharge wet storage were exposed as granular powders to gamma irradiation in a {sup 60}Co irradiator in closed laboratory test vessels with air and with argon as separate cover gases. The results show that boehmite readily evolves hydrogen with exposure up to a dose of 1.8 x 10{sup 8} rad, the maximum tested, in both a full-dried and moist condition of the powder, whereas only a very small measurable quantity of hydrogen was generated from the granular powder of gibbsite. Specific information on the test setup, sample characteristics, sample preparation, irradiation, and gas analysis are described.

Fisher, D.; Westbrook, M.; Sindelar, R.

2012-02-01T23:59:59.000Z

498

Standard guide for conducting exfoliation corrosion tests in aluminum alloys  

E-Print Network [OSTI]

1.1 This guide differs from the usual ASTM standard in that it does not address a specific test. Rather, it is an introductory guide for new users of other standard exfoliation test methods, (see Terminology G 15 for definition of exfoliation). 1.2 This guide covers aspects of specimen preparation, exposure, inspection, and evaluation for conducting exfoliation tests on aluminum alloys in both laboratory accelerated environments and in natural, outdoor atmospheres. The intent is to clarify any gaps in existent test methods. 1.3 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

American Society for Testing and Materials. Philadelphia

1992-01-01T23:59:59.000Z

499

Modelling of impurity balance for an aluminum smelter  

SciTech Connect (OSTI)

Modeling of impurity balance for an aluminum smelter was conducted. Major impurity streams were sampled and analyzed for impurity concentrations. A flowsheet model was developed and validated using measured data. The purpose of the modeling was to examine the effects of a change from primary to secondary alumina on metal purity and to determine operational strategies to minimize the impact on high purity metal production in the upgrade of the smelter. The impurity partition for cell groups under different operating conditions was determined. Results suggest that production of high purity metal is highly related to the cell operating characteristics. The understanding gained has assisted the design of operating strategies to produce high purity metal from secondary alumina.

Zhang, W.; Liu, X. [Comalco Research Centre, Thomastown, Victoria (Australia); McMaster, P.; Taylor, M. [New Zealand Aluminium Smelters Ltd., Invercargill (New Zealand)

1996-10-01T23:59:59.000Z

500

Laser assisted high entropy alloy coating on aluminum: Microstructural evolution  

SciTech Connect (OSTI)

High entropy alloy (Al-Fe-Co-Cr-Ni) coatings were synthesized using laser surface engineering on aluminum substrate. Electron diffraction analysis confirmed the formation of solid solution of body centered cubic high entropy alloy phase along with phases with long range periodic structures within the coating. Evolution of such type of microstructure was a result of kinetics associated with laser process, which generates higher temperatures and rapid cooling resulting in retention of high entropy alloy phase followed by reheating and/or annealing in subsequent passes of the laser track giving rise to partial decomposition. The partial decomposition resulted in formation of precipitates having layered morphology with a mixture of high entropy alloy rich phases, compounds, and long range ordered phases.

Katakam, Shravana; Joshi, Sameehan S.; Mridha, Sanghita; Mukherjee, Sundeep; Dahotre, Narendra B., E-mail: Narendra.Dahotre@unt.edu [Department of Materials Science and Engineering, University of North Texas, 1150 Union Circle, 305310 Denton, Texas 76203-5017 (United States)

2014-09-14T23:59:59.000Z