Evaluation on the Delamination Life of Isothermally Aged Plasma Sprayed Thermal Barrier Coating

플라즈마 용사 열차폐 코팅의 박리수명 평가에 관한 연구

In this study, disk type of thermal barrier coating system for gas turbine blade was isothermally aged in the furnace changing exposure time and temperature. The aging conditions that determination occurs were determined by the extensive microscopic analyses and bond tests for each aging condition. The delamination map was drawn from the time-temperature matrix form which summarize the delamination conditions. Finally, a method to draw the delamination life diagram of a thermal barrier coating system by using the delamination map was suggested