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 thermalprotection coatings are discussed, including the addition of multiple reactive elements, modified aluminide coatings, diffusion-barrier concepts, the design of “smart” corrosionresistant coatings, and the development of structurally modified, low-thermal-conductivity thermal-barrier coatings.
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Nicholls, J.R. Advances in Coating Design for High-Performance Gas Turbines. MRS Bulletin 28, 659–670 (2003). https://doi.org/10.1557/mrs2003.194
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DOI: https://doi.org/10.1557/mrs2003.194