Abstract: A thermal barrier coating material, containing a metal binding layer laminated on a base material and ceramic layer laminated on the metal binding layer, the ceramic layer comprising partially stabilized ZrO2 which is partially stabilized by additives of Dy2O3 and Yb2O3.

Abstract: A thermal barrier coating material, containing a metal binding layer laminated on a base material and a ceramic layer laminated on the metal binding layer, the ceramic layer comprising partially stabilized ZrO2 which is partially stabilized by additives of Dy2O3 and Yb2O3.

Abstract: The invention relates to a thermal barrier coating material for coating a gas turbine member that provides a higher thermal barrier property and a higher peeling resistance. In a first aspect of the invention, a metal binding layer 22 and a porous ZrO2-based ceramic layer 23 are laminated successively on a base material 21, and microcracks that extend in the thickness direction are formed in the ceramic layer 23. After laminating the ceramic layer 23 on the metal binding layer 22 by thermal spraying, etc., microcracks 24 are formed by irradiating with a laser beam a surface of the ceramic layer 23 and thereby heating the surface of the ceramic layer 23 at 1000° C. to 1700° C., while cooling the rear surface of the base material 21. Thus, microcracks 24 are formed by a heating and cooling cycle.

Abstract: This invention relates to processes for the production of a sintered body consisting of an intimate solid solution of Cr2O3 and Al2O3 by using inexpensive materials, as well as sintered bodies produced thereby. More specifically, it relates to processes for the production of a sintered body which comprises the steps of providing a powder mixture consisting essentially of Cr2O3 powder and Al2O3 powder each having an average particle diameter of not greater than 0.5 &mgr;m, or a powder mixture obtained by mixing the aforesaid powder mixture with 1.5 to 15% by weight of TiO2 powder having an average particle diameter of not greater than 0.5 &mgr;m, and sintering the powder mixture at a temperature of 1,350 to 1,600° C. in a vacuum atmosphere of 10−20 to 10−5 atm. to yield a sintered body consisting of an intimate solid solution of Cr2O3 and Al2O3 and having a relative density of not less than 95%, as well as sintered bodies produced thereby.