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Advances in Coating Design for High-Performance Gas Turbines

Published online by Cambridge University Press:  31 January 2011

J. R. Nicholls
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Abstract

Surface engineering is now a key materials technology in the design of future advanced gas-turbine engines. This article focuses on coating systems for hot-gas-path components, which can vary from low-cost aluminide diffusion coatings to the more exotic, and therefore expensive, thermal-barrier coatings. Available coating systems and their relative benefits are reviewed in terms of performance against manufacturing complexity and cost. Future trends in the design of environmental- and thermal-protection coatings are discussed, including the addition of multiple reactive elements, modified aluminide coatings, diffusion-barrier concepts, the design of “smart” corrosion-resistant coatings, and the development of structurally modified, low-thermal-conductivity thermal-barrier coatings.

Keywords

gas-turbine materialsjet enginesthermal-barrier coatings (TBCs)ultrahigh-temperature coatings

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Type
Research Article
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MRS Bulletin , Volume 28 , Issue 9: Ultrahigh-Temperature Materials for Jet Engines , September 2003, pp. 659 - 670
Copyright
Copyright © Materials Research Society 2003

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