THERMAL BARRIER COATING MATERIAL, METHOD OF PRODUCTION THEREOF, AND GAS TURBINE MEMBER AND GAS TURBINE APPLYING SAID THERMAL BARRIER COATING MATERIAL

摘要

A thermal barrier coating material, characterized in that it comprises a metalbinder layer (22) and a porous ceramic layer (23) comprising a partiallystabilized ZrO2which are laminated on a base material (2) in this order, andthe ceramic layer has microcracks (24) extending in the thickness direction;and a method for producing the thermal barrier coating material whichcomprises, after the lamination of the ceramic layer, heating the frontsurface of the ceramic layer by the irradiation with a laser beam whilecooling the back face of the base material, to thereby form the microcraks.Another thermal barrier coating material, characterized in that it comprises ametal binder layer and, laminated thereon, a partially stabilized ZrO2 whichis partially stabilized by the addition of Dy2O2 and Yb2O2. A thermal spraymaterial for TBC, characterized in that it comprises a zirconia powder and arare earth oxide powder added thereto, both having a specific surface area of10 m2/g; and a method for producing the thermal spray material which comprisesmixing these powders and a binder to form a slurry, granulating the slurry,and heat-treating the resultant granules.