Thermal barrier coating member and turbine and for producing the same

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PROBLEM TO BE SOLVED : To provide a heat-shielding coating material which has a peeling resistance in a high-temperature use and has a high heat-shielding effect, to provide a heat-shielding coating member and its production method, to provide a turbine part coated with the heat-shielding coating material, and to provide a gas turbine. SOLUTION : The heat-shielding member is composed of 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 includes a ceramic represented by the formula : A2Zr2O7(wherein A is a rare earth element) and has (a) a porosity rate of 1 to 30%, and (b) cracks or (c) columnar crystal formed at intervals of 5 to 100% of the thickness of the entire layer except the bond coat layer on the heat-resistant substrate in the thickness direction. COPYRIGHT : (C)2006, JPO&NCIPI