HEAT INSULATING COATING SYSTEM FOR MEMBER MADE OF SUPERALLOY, MEMBER MADE OF SUPERALLOY AND METHOD FOR REDUCING WEIGHT OF MEMBER COATED WITH CERAMIC

    公开(公告)号:JP2000096261A

    公开(公告)日:2000-04-04

    申请号:JP16034699

    申请日:1999-06-08

    Abstract: PROBLEM TO BE SOLVED: To provide a heat insulating coating system having the advantage or reducing the weight and moreover limiting the oxidation even in the case ceramic is peeled. SOLUTION: In a heat insulating coating system 20 for a base material 22 made of a superalloy, a superalloy of a type capable of forming an adhesive alumina layer 26 is used. At first, a bonding coat 24 is applied to the local region of the base material 22 in such a manner that a part of the base material 22 is left exposed. The local region is ordinarily defined as the region in which heat insulating coating is first chipped such as the front edge and rear edge of airfoil or the like. Next, the alumina layer 26 is formed on the exposed part of the base material 22 and the bonding coat 24 by heat treatment. Successively, the alumina layer 26 is applied with a ceramic layer 28. In this way, even in the case the ceramic material 28 is peeled, the local bonding coat 24 is left, so that the oxidation of the base material can be limited.

    THERMAL BARRIER COATING AND METHOD FOR REDUCING HEAT CONDUCTIVITY OF THE SAME

    公开(公告)号:JP2006342427A

    公开(公告)日:2006-12-21

    申请号:JP2006159412

    申请日:2006-06-08

    Inventor: ULION NICHOLAS E

    Abstract: PROBLEM TO BE SOLVED: To provide a method for reducing heat conductivity of a thermal barrier coating by incorporating a metal oxide into a ceramic matrix. SOLUTION: The method for reducing heat conductivity of the thermal barrier coating comprises the steps of: depositing a mixture containing a ceramic matrix and a metal dispersoid capable of forming the metal oxide on a substrate to form one or more layers, heating the one or more layers at a sufficient temperature for a sufficient time for oxidizing the metal dispersoid, and forming one or more layers of thermal barrier coating. The thermal barrier coating contains the ceramic matrix and the metal oxide dispersed throughout the ceramic matrix. COPYRIGHT: (C)2007,JPO&INPIT

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