THERMAL BARRIER COATING MEMBER, METHOD FOR PRODUCING THE SAME, THERMAL BARRIER COATING MATERIAL, GAS TURBINE, AND SINTERED BODY

摘要

There are provided a thermal barrier coating material and athermal barrier coating member that can suppress spalling whenused at a high temperature and have a high thermal barriereffect, a method for producing the same, a turbine membercoated with a thermal barrier coating, and a gas turbine. Thethermal barrier coating member comprises a heat resistantsubstrate 21, a bond coat layer 22 formed thereon, and aceramic layer 24 formed further thereon, wherein the ceramiclayer 24 comprises an oxide which consists of an oxiderepresented by the general formula A2Zr2O7 doped with apredetermined amount of CaO or MgO and has 10 volume % or moreof a pyrochlore type crystal structure, where A represents anyof La, Nd, Sm, Gd, and Dy.