X-RAY RESIDUAL-STRESS ANALYSIS OF A CERAMIC THERMAL BARRIER COATING UNDERGOING THERMAL CYCLING

被引：38

作者：

JORDAN, DW

FABER, KT

机构：

[1] Department of Materials Science and Engineering, Northwestern University, Evanston

来源：

THIN SOLID FILMS | 1993年 / 235卷 / 1-2期

关键词：

D O I：

10.1016/0040-6090(93)90256-O

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The residual stress of a ZrO2-8%Y2O3 thermal barrier coating was determined as a function of thermal cycling. Samples were thermally cycled from 400-degrees-C to 1000-degrees-C in air. After a few cycles the samples exhibited a value of compressive residual stress consistent with that determined by considering the thermal expansion coefficients of the coating and substrate. Stress relief occurs in the ZrO2-Y2O3 coating, increasing in both frequency and magnitude with increasing number of thermal cycles. This behavior is explained in terms of a model of failure of coatings in compression.

引用

页码：137 / 141

页数：5

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