LIFE CONTROL METHOD OF HEAT BARRIER COATING

摘要

PROBLEM TO BE SOLVED: To provide a life control method of heat barrier coating capable of efficiently controlling the life of a high-temperature part by precisely estimating a deterioration state with respect to the high-temperature part equipped with TBC. SOLUTION: In the life control method of the heat barrier coating formed by applying a bond coating layer, which comprises an interfacial oxide forming metal-containing alloy, and a topcoating layer comprising ceramics to the surface of the base material of the high-temperature part, the correlation of the heating time and heating temperature of the high-temperature part with a change in the content of the interfacial oxide forming metal in the bond coating layer of the high-temperature part is calculated to measure the average content of an interfacial oxide forming metal in the bond coating layer of the heat barrier coating at a predetermined region of the high-temperature part used in an actual machine. The life of the heat barrier coating is estimated from this measured value and the correlation. COPYRIGHT: (C)2008,JPO&INPIT