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Graded reactive element containing aluminide coatings for improved high temperature performance and method for producing
Graded reactive element containing aluminide coatings for improved high temperature performance and method for producing
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机译:用于改善高温性能的含梯度反应元素的铝化物涂层及其生产方法
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摘要
A diffusion aluminide coating having a graded structure is applied over a nickel base superalloy substrate. The coating has an inner region of a diffusion aluminide adjacent to the substrate rich in a reactive element, typically Hf, Si or combinations of the two. The near surface region is a diffusion aluminide which is substantially free of reactive elements. Such coatings when used as bond coats in thermal barrier coating systems exhibit improved spallation performance.
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