# 용사 열차폐 코팅층의 두께가 열응력에 미치는 영향

• 김형남 (한국전력공사 전력연구원) ;
• 양승한 (한국전력공사 전력연구원)
• Published : 2004.05.01

#### Abstract

Based on the principle of complementary energy an analytical method is developed for determining thermal stress distribution in an thermal barrier coating. This method gives the stress distributions which satisfy the stress-free boundary conditions at the edge. Numerical examples are given in order to verify the method and to investigate the thickness effects of the ZrO$_2$-8wt%Y$_2$O$_3$ top coat on the integrity of thermal barrier coating consisted of IN738LC substrate and MCrAlY bond coat.