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Failure of Ceramic Coatings Subjected to Thermal Cyclings  

Han Ji-Won (Department of Mechanical Engineering, Hoseo University)
Publication Information
Journal of the Korean Society of Safety / v.20, no.2, 2005 , pp. 1-5 More about this Journal
Abstract
An experimental study was conducted to develop an understanding of failure of ceramic coating when subjected to a thermal cycling. Number of cycles to failure were decreased as the coating thickness and the oxide of bond coat were increased. Using the finite element method, an analysis of stress distribution in ceramic coatings was performed. Radial compressive stress was increased in the top/bond coat interface with increasing coating thickness and oxide of bond coat.
Keywords
thermal cycling; thermal shock; thermal barrier coatings; failure;
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