Effect of Air Plasma Sprayed Flash Bond Coatings on Furnace Cycle Lifetime of Disks and Rods
Abstract
Air plasma sprayed (APS) flash coatings on high velocity oxygen fuel (HVOF) bond coatings are well known to extend the lifetime of thermal barrier coatings (TBCs). Recent work compared flash coatings of NiCoCrAlY and NiCoCrAlYHfSi applied to both rods and disk substrates of alloy 247. For rod specimens, 100 h cycles were used at 1100 °C in wet air. Both flash coatings significantly improved the lifetime compared to HVOF-only and vacuum plasma spray (VPS)-only MCrAlY bond coatings with no statistical difference between the two flash coatings. For disk specimens tested in 1 h cycles at 1100 °C in wet air, the NiCoCrAlY flash coating significantly outperformed an HVOF-only NiCoCrAlYHfSi bond coating and a NiCoCrAlYHfSi flash coating. The flash coatings formed a mixed oxide-metal zone that appeared to inhibit crack formation and therefore extend lifetime. In addition to the flash coating increasing the bond coating roughness, the underlying HVOF layer acted as a source of Al for this intermixed zone and prevented the oxide from penetrating deeper into the bond coating. Here, the lower Y+Hf content in the Y-only flash coating appeared to minimize oxidation in the flash layer, thereby increasing the benefit compared to a NiCoCrAlYHfSi flash coating.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Stony Brook Univ., NY (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1731076
- Grant/Contract Number:
- AC05-00OR22725; FEAA122
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Engineering for Gas Turbines and Power
- Additional Journal Information:
- Journal Volume: 142; Journal Issue: 12; Journal ID: ISSN 0742-4795
- Publisher:
- ASME
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; Coatings; Cycles; Disks; Rods; Plasmas (Ionized gases)
Citation Formats
Pint, Bruce, Lance, Michael J., Haynes, James A., Gildersleeve, Edward J., and Sampath, Sanjay. Effect of Air Plasma Sprayed Flash Bond Coatings on Furnace Cycle Lifetime of Disks and Rods. United States: N. p., 2020.
Web. doi:10.1115/1.4046694.
Pint, Bruce, Lance, Michael J., Haynes, James A., Gildersleeve, Edward J., & Sampath, Sanjay. Effect of Air Plasma Sprayed Flash Bond Coatings on Furnace Cycle Lifetime of Disks and Rods. United States. https://doi.org/10.1115/1.4046694
Pint, Bruce, Lance, Michael J., Haynes, James A., Gildersleeve, Edward J., and Sampath, Sanjay. Mon .
"Effect of Air Plasma Sprayed Flash Bond Coatings on Furnace Cycle Lifetime of Disks and Rods". United States. https://doi.org/10.1115/1.4046694. https://www.osti.gov/servlets/purl/1731076.
@article{osti_1731076,
title = {Effect of Air Plasma Sprayed Flash Bond Coatings on Furnace Cycle Lifetime of Disks and Rods},
author = {Pint, Bruce and Lance, Michael J. and Haynes, James A. and Gildersleeve, Edward J. and Sampath, Sanjay},
abstractNote = {Air plasma sprayed (APS) flash coatings on high velocity oxygen fuel (HVOF) bond coatings are well known to extend the lifetime of thermal barrier coatings (TBCs). Recent work compared flash coatings of NiCoCrAlY and NiCoCrAlYHfSi applied to both rods and disk substrates of alloy 247. For rod specimens, 100 h cycles were used at 1100 °C in wet air. Both flash coatings significantly improved the lifetime compared to HVOF-only and vacuum plasma spray (VPS)-only MCrAlY bond coatings with no statistical difference between the two flash coatings. For disk specimens tested in 1 h cycles at 1100 °C in wet air, the NiCoCrAlY flash coating significantly outperformed an HVOF-only NiCoCrAlYHfSi bond coating and a NiCoCrAlYHfSi flash coating. The flash coatings formed a mixed oxide-metal zone that appeared to inhibit crack formation and therefore extend lifetime. In addition to the flash coating increasing the bond coating roughness, the underlying HVOF layer acted as a source of Al for this intermixed zone and prevented the oxide from penetrating deeper into the bond coating. Here, the lower Y+Hf content in the Y-only flash coating appeared to minimize oxidation in the flash layer, thereby increasing the benefit compared to a NiCoCrAlYHfSi flash coating.},
doi = {10.1115/1.4046694},
journal = {Journal of Engineering for Gas Turbines and Power},
number = 12,
volume = 142,
place = {United States},
year = {Mon Nov 30 00:00:00 EST 2020},
month = {Mon Nov 30 00:00:00 EST 2020}
}
Works referenced in this record:
High-Temperature Corrosion in Fossil Fuel Power Generation: Present and Future
journal, June 2013
- Pint, B. A.
- JOM, Vol. 65, Issue 8
Design, preparation and properties of non-oxide CMCs for application in engines and nuclear reactors: an overview
journal, February 2004
- Naslain, R.
- Composites Science and Technology, Vol. 64, Issue 2
Properties of thermal barrier coatings
journal, March 1986
- Bennett, A.
- Materials Science and Technology, Vol. 2, Issue 3
Protective coatings in the gas turbine engine
journal, December 1994
- DeMasi-Marcin, Jeanine T.; Gupta, Dinesh K.
- Surface and Coatings Technology, Vol. 68-69
TBC experience in land- based gas turbines
journal, June 1997
- Nelson, W. A.; Orenstein, R. M.
- Journal of Thermal Spray Technology, Vol. 6, Issue 2
Substrate and bond coat compositions: factors affecting alumina scale adhesion
journal, May 1998
- Pint, B. A.; Wright, I. G.; Lee, W. Y.
- Materials Science and Engineering: A, Vol. 245, Issue 2
Characteristics of MCrAlY Coatings Sprayed by High Velocity Oxygen-Fuel Spraying System
journal, July 1999
- Itoh, Y.; Saitoh, M.; Tamura, M.
- Journal of Engineering for Gas Turbines and Power, Vol. 122, Issue 1
Advances in Coating Design for High-Performance Gas Turbines
journal, September 2003
- Nicholls, J. R.
- MRS Bulletin, Vol. 28, Issue 9
Overview on Recent Developments of Bondcoats for Plasma-Sprayed Thermal Barrier Coatings
journal, October 2017
- Naumenko, D.; Pillai, R.; Chyrkin, A.
- Journal of Thermal Spray Technology, Vol. 26, Issue 8
APS TBC performance on directionally-solidified superalloy substrates with HVOF NiCoCrAlYHfSi bond coatings
journal, December 2015
- Lance, M. J.; Unocic, K. A.; Haynes, J. A.
- Surface and Coatings Technology, Vol. 284
Water vapor effects on the cyclic oxidation resistance of alumina forming alloys
journal, January 2003
- Onal, K.; Maris-Sida, M. C.; Meier, G. H.
- Materials at High Temperatures, Vol. 20, Issue 3
The effect of water vapor on the oxidation behavior of Ni–Pt–Al coatings and alloys
journal, December 2006
- Pint, B. A.; Haynes, J. A.; Zhang, Y.
- Surface and Coatings Technology, Vol. 201, Issue 7
Effect of increased water vapor levels on TBC lifetime with Pt-containing bond coatings
journal, December 2011
- Pint, B. A.; Garner, G. W.; Lowe, T. M.
- Surface and Coatings Technology, Vol. 206, Issue 7
The effect of cycle frequency, H2O and CO2 on TBC lifetime with NiCoCrAlYHfSi bond coatings
journal, December 2014
- Lance, M. J.; Unocic, K. A.; Haynes, J. A.
- Surface and Coatings Technology, Vol. 260
The Effect of Environment on Thermal Barrier Coating Lifetime
journal, March 2016
- Pint, Bruce A.; Unocic, Kinga A.; Allen Haynes, J.
- Journal of Engineering for Gas Turbines and Power, Vol. 138, Issue 8
Engineered Multilayer Thermal Barrier Coatings for Enhanced Durability and Functional Performance
journal, June 2014
- Viswanathan, Vaishak; Dwivedi, Gopal; Sampath, Sanjay
- Journal of the American Ceramic Society, Vol. 97, Issue 9
Effect of processing parameters on MCrAlY bondcoat roughness and lifetime of APS–TBC systems
journal, December 2014
- Nowak, W.; Naumenko, D.; Mor, G.
- Surface and Coatings Technology, Vol. 260
The effects of temperature and substrate curvature on TBC lifetime and residual stress in alumina scales beneath APS YSZ
journal, December 2016
- Lance, M. J.; Haynes, J. A.; Pint, B. A.
- Surface and Coatings Technology, Vol. 308
The Effect of Coating Composition and Geometry on Thermal Barrier Coatings Lifetime
journal, October 2018
- Pint, Bruce A.; Lance, Michael J.; Allen Haynes, J.
- Journal of Engineering for Gas Turbines and Power, Vol. 141, Issue 3
Characterization of the alumina scale formed on a commercial MCrAlYHfSi coating
journal, November 2010
- Unocic, K. A.; Pint, B. A.
- Surface and Coatings Technology, Vol. 205, Issue 5
Effect of water vapor on the 1100°C oxidation behavior of plasma-sprayed TBCs with HVOF NiCoCrAlX bond coatings
journal, January 2013
- Haynes, J. A.; Unocic, K. A.; Pint, B. A.
- Surface and Coatings Technology, Vol. 215
The use of two reactive elements to optimize oxidation performance of alumina-forming alloys
journal, January 2003
- Pint, B. A.; More, K. L.; Wright, I. G.
- Materials at High Temperatures, Vol. 20, Issue 3
Oxidation behavior of co-doped NiCrAl alloys in dry and wet air
journal, December 2013
- Unocic, Kinga A.; Pint, Bruce A.
- Surface and Coatings Technology, Vol. 237
Effect of water vapor on thermally-grown alumina scales on Pt-modified and simple aluminide bond coatings
journal, December 2013
- Lance, M. J.; Unocic, K. A.; Haynes, J. A.
- Surface and Coatings Technology, Vol. 237
Effect of APS flash bond coatings and curvature on TBC performance on rod specimens
journal, November 2019
- Lance, M. J.; Thiesing, B. P.; Haynes, J. A.
- Surface and Coatings Technology, Vol. 378
Performance of vacuum plasma spray and HVOF bond coatings at 900° and 1100 °C
journal, March 2018
- Lance, M. J.; Haynes, J. A.; Pint, B. A.
- Surface and Coatings Technology, Vol. 337
Role of bond coat processing methods on the durability of plasma sprayed thermal barrier systems
journal, October 2019
- Gildersleeve V., Edward J.; Viswanathan, Vaishak; Lance, Michael J.
- Surface and Coatings Technology, Vol. 375