Development of Nondestructive Evaluation Methods for Ceramic Coatings.

Ellingson, W. A. ; Deemer, C. ; Sun, J. G. ; Erdman, S. ; Muliere, D.

Technical Information Center Oak Ridge Tennessee

关键词: Ceramics;    Coatings;    Nondestructive tests;    Combustors;    Defects;   

RP-ID  :  DE200243589

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Nondestructive evaluation (NDE) methods are being developed for use with ceramic coatings for components in the hot-gas path of advanced gas-fired turbine engines with low emissions. Two types of coatings are being studied: thermal barrier coatings (TBCs), which are under development for vanes, blades, and combustor liners to allow hotter gas-path temperatures, and environmental barrier coatings (EBCs), which are under development to reduce environmental damage to high temperature components made of ceramic matrix composites. The NDE methods will be used to (1) provide data to assess the reliability of new coating application processes, (2) identify defective components that could cause unscheduled outages, (3) track growth rates of defects during use in engines, and (4) allow rational judgment for replace/repair/re-use decisions of components.