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公开(公告)号：JP2000096261A
公开(公告)日：2000-04-04
申请号：JP16034699
申请日：1999-06-08
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BOSE SUDHANGSU , GUPTA DINESH K , MARCIN JEANINE T , ULION NICHOLAS E
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.
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公开(公告)号：DE69903595D1
公开(公告)日：2002-11-28
申请号：DE69903595
申请日：1999-06-11
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BOSE SUDHANGSU , GUPTA DINESH K , MARCIN JEANINE T , ULION NICHOLAS E
Abstract: A thermal barrier coating system for a superalloy substrate is disclosed. The superalloy is preferably of the type that is capable of forming an adherent alumina layer. A bond coat is applied to a local area of the substrate (24), so that a portion of the substrate remains exposed. The localized area is defined to be the area(s) at which a TBC typically fails first, e.g., the leading (30) and trailing edges (32) of an airfoil (20), or other area. An alumina layer (26) is formed on the remaining portion of the substrate, and also on the bond coat. A ceramic layer (28) is then applied on the alumina layer. Even if the ceramic material is removed, the localized bond coat remains, and reduces the rate at which the underlying substrate oxidizes. A coated article is also disclosed, as is a system that utilizes a conventional superalloy and aluminide coating with the localized bond coat.
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Patent Agency Ranking
公开(公告)号：CA2274412C
公开(公告)日：2007-09-04
申请号：CA2274412
申请日：1999-06-11
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BOSE SUDHANGSHU , GUPTA DINESH K , MARCIN JEANINE T , ULION NICHOLAS E
Abstract: A thermal barrier coating system for a superalloy substrate is disclosed. T he superalloy is preferably of the type that is capable of forming an adherent alumina layer. A bond coat is applied to a local area of the substrate, so that a portion of the substrate remains exposed. The localized area is defined to be the area(s) a t which a TBC typically fails first, e.g., the leading and trailing edges of an airfoi l, or other area. An alumina layer is formed on the remaining portion of the substrate, and al so on the bond coat. A ceramic layer is then applied on the alumina layer. Even if the ceramic material is removed, the localized bond coat remains, and reduces the rate a t which the underlying substrate oxidizes. A coated article is also disclosed, as is a system that utilizes a conventional superalloy and aluminide coating with the localized bond coat.
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公开(公告)号：ES2181365T3
公开(公告)日：2003-02-16
申请号：ES99304588
申请日：1999-06-11
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BOSE SUDHANGSU , GUPTA DINESH K , MARCIN JEANINE T , ULION NICHOLAS E
Abstract: A thermal barrier coating system for a superalloy substrate is disclosed. The superalloy is preferably of the type that is capable of forming an adherent alumina layer. A bond coat is applied to a local area of the substrate (24), so that a portion of the substrate remains exposed. The localized area is defined to be the area(s) at which a TBC typically fails first, e.g., the leading (30) and trailing edges (32) of an airfoil (20), or other area. An alumina layer (26) is formed on the remaining portion of the substrate, and also on the bond coat. A ceramic layer (28) is then applied on the alumina layer. Even if the ceramic material is removed, the localized bond coat remains, and reduces the rate at which the underlying substrate oxidizes. A coated article is also disclosed, as is a system that utilizes a conventional superalloy and aluminide coating with the localized bond coat.
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公开(公告)号：CA2274412A1
公开(公告)日：1999-12-12
申请号：CA2274412
申请日：1999-06-11
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BOSE SUDHANGSHU , MARCIN JEANINE T , GUPTA DINESH K , ULION NICHOLAS E
Abstract: A thermal barrier coating system for a superalloy substrate is disclosed. The superalloy is preferably of the type that is capable of forming an adherent alumina layer. A bond coat is applied to a local area of the substrate, so that a portion of the substrate remains exposed. The localized area is defined to be the areas) at which a TBC typically fails first, e.g., the leading and trailing edges of an airfoil, or other area. An alumina layer is formed on the remaining portion of the substrate, and also on the bond coat. A ceramic layer is then applied on the alumina layer. Even if the ceramic material is removed, the localized bond coat remains, and reduces the rate at which the underlying substrate oxidizes. A coated article is also disclosed, as is a system that utilizes a conventional superalloy and aluminide coating with the localized bond coat.
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公开(公告)号：DE69903595T2
公开(公告)日：2003-06-18
申请号：DE69903595
申请日：1999-06-11
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BOSE SUDHANGSU , GUPTA DINESH K , MARCIN JEANINE T , ULION NICHOLAS E
Abstract: A thermal barrier coating system for a superalloy substrate is disclosed. The superalloy is preferably of the type that is capable of forming an adherent alumina layer. A bond coat is applied to a local area of the substrate (24), so that a portion of the substrate remains exposed. The localized area is defined to be the area(s) at which a TBC typically fails first, e.g., the leading (30) and trailing edges (32) of an airfoil (20), or other area. An alumina layer (26) is formed on the remaining portion of the substrate, and also on the bond coat. A ceramic layer (28) is then applied on the alumina layer. Even if the ceramic material is removed, the localized bond coat remains, and reduces the rate at which the underlying substrate oxidizes. A coated article is also disclosed, as is a system that utilizes a conventional superalloy and aluminide coating with the localized bond coat.
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公开(公告)号：SG75960A1
公开(公告)日：2000-10-24
申请号：SG1999002587
申请日：1999-05-26
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BOSE SUDHANGSHU , GUPTA DINESH K , MARCIN JEANINE T , ULION NICHOLAS E
Abstract: A thermal barrier coating system for a superalloy substrate is disclosed. The superalloy is preferably of the type that is capable of forming an adherent alumina layer. A bond coat is applied to a local area of the substrate (24), so that a portion of the substrate remains exposed. The localized area is defined to be the area(s) at which a TBC typically fails first, e.g., the leading (30) and trailing edges (32) of an airfoil (20), or other area. An alumina layer (26) is formed on the remaining portion of the substrate, and also on the bond coat. A ceramic layer (28) is then applied on the alumina layer. Even if the ceramic material is removed, the localized bond coat remains, and reduces the rate at which the underlying substrate oxidizes. A coated article is also disclosed, as is a system that utilizes a conventional superalloy and aluminide coating with the localized bond coat.
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