Ceramic thermal barrier coatings are currently under active development in the U.S. for both aircraft and industrial/Utility gas turbine operation. These coating systems generally consist of an oxidation-corrosion resistant metal bond coat of the MCrAlY type and either a single thick layer ceramic overcoat or a graded ceramic/MCrAlY overcoat. This paper summarizes studies conducted on the high-temperature corrosion resistance of ZrO2 · Y2O3, ZrO2 · MgO and Ca2SiO4 plasma sprayed coatings that are candidates for use as thermal barrier coatings in gas turbine engines. Coatings were evaluated in both atmospheric burner rig and pressurized passage tests using GT No. 2 fuel and that doped with corrosive impurities such as sodium, sulfur and vanadium. The test results showed that the coatings perform very well in the clean fuel pressurized passage tests as well as burner rig tests. With impure fuels, it was found that chemical reactions between the ceramic coatings and combustion gases/condensates played the critical role in coating degradation. This work was conducted for NASA and EPRI under contract NAS3-21377. Advanced coating development studies have also been conducted for NASA and DOE under contract DEN3-110.
Skip Nav Destination
ASME 1982 International Gas Turbine Conference and Exhibit
April 18–22, 1982
London, England
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7960-3
Article Contents
PROCEEDINGS PAPER
Ceramic Thermal Barrier Coatings for Gas Turbine Engines Free
R. J. Bratton,
R. J. Bratton
Westinghouse Research and Development Center, Pittsburgh, PA
Search for other works by this author on:
S. K. Lau,
S. K. Lau
Westinghouse Research and Development Center, Pittsburgh, PA
Search for other works by this author on:
C. A. Andersson,
C. A. Andersson
Westinghouse Research and Development Center, Pittsburgh, PA
Search for other works by this author on:
S. Y. Lee
S. Y. Lee
Westinghouse Research and Development Center, Pittsburgh, PA
Search for other works by this author on:
R. J. Bratton
Westinghouse Research and Development Center, Pittsburgh, PA
S. K. Lau
Westinghouse Research and Development Center, Pittsburgh, PA
C. A. Andersson
Westinghouse Research and Development Center, Pittsburgh, PA
S. Y. Lee
Westinghouse Research and Development Center, Pittsburgh, PA
Paper No:
82-GT-265, V005T12A009; 4 pages
Published Online:
April 15, 2015
Citation
Bratton, RJ, Lau, SK, Andersson, CA, & Lee, SY. "Ceramic Thermal Barrier Coatings for Gas Turbine Engines." Proceedings of the ASME 1982 International Gas Turbine Conference and Exhibit. Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources; General. London, England. April 18–22, 1982. V005T12A009. ASME. https://doi.org/10.1115/82-GT-265
Download citation file:
278
Views
Related Proceedings Papers
Related Articles
Stability of a ZrO 2 (Y 2 O 3 ) Thermal Barrier Coating in Turbine Fuel with Contaminants
J. Eng. Power (October,1980)
High-Temperature Corrosion Studies in an Oil-Fired Laboratory Combustor
J. Eng. Power (April,1967)
Related Chapters
Surface Analysis and Tools
Tribology of Mechanical Systems: A Guide to Present and Future Technologies
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
E110opt Fuel Cladding Corrosion under PWR Conditions
Zirconium in the Nuclear Industry: 20th International Symposium