| 简介 |
PROBLEM TO BE SOLVED : To provide a thermal barrier coating member in which the peeling and damage of thermal barrier coatings can be evaluated during the operation of high temperature thermal equipment, and to provide an evaluation method therefor.
SOLUTION : The thermal barrier coating member is formed by stacking a substrate layer 12 and a surface layer 13 on the surface of a metal base material 11 and, as an intermediate layer 14, a rare earth oxide layer is interposed between the substrate layer 12 and the surface layer 13. As the intermediate layer 14, preferably, the material formed of CeO2 or HfO2, or the material formed by mixing CeO2 and HfO2 is used. In the evaluation method for the thermal barrier coating member, an exhaust gas passage part 18 in a turbine having the thermal barrier coating member with the rare earth oxide layer interposed as the intermediate layer 14 is irradiated with X-rays or ultraviolet rays, and fluorescence from the rare earth oxide comprised in exhaust gas is measured, thus whether the thermal barrier coatings are damaged or not is estimated. |
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