Patent ID: 8586169

Claim:
A thermal barrier coating member comprising a heat resistant substrate, a bond coat layer formed on the heat resistant substrate, and a ceramic layer formed on the bond coat layer, wherein the ceramic layer comprises an oxide represented by general formula A′ 1 B 1 Zr 2 O 7 , where A′ and B each represent any of Sm, Ce, and Yb, and A′ and B are mutually different elements, wherein the oxide has a pyrochlore type crystal structure to lower thermal conductivity, wherein said ceramic layer has pores with a porosity of not lower than 1% and not higher than 30%, and wherein said ceramic layer has vertical cracks in a thickness direction thereof at intervals of not smaller than 5% and not larger than 100% of a total thickness of layer(s) other than the bond coat layer on the heat resistant substrate.