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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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公开(公告)号:SG152052A1
公开(公告)日:2009-05-29
申请号:SG2005084900
申请日:2003-08-21
Applicant: UNITED TECHNOLOGIES CORP
Inventor: LITTON DAVID A , ULION NICHOLAS E , TRUBELJA MLADEN F , MALONEY MICHAEL J , WARRIER SUNIL GOVINDA
IPC: C01F17/00 , C01G25/02 , C01G27/02 , C04B35/488 , C04B35/50 , C09D5/18 , C23C4/10 , F01D5/28 , C23C28/00 , C23C30/00 , F02C7/00 , F23R3/42 , C04B35/01 , C09D1/00 , C23C14/08 , C23C14/22 , C23C16/00
Abstract: A thermal barrier coating comprising from 0.5 to 22.0 mol% of CeO2, and from 0.5 to 22.0 mol% of at least one first oxide selected from the group consisting of La2O3, Sm2O3, Th203, Tm2O3, Ho2O3, Lu2O3, MgO, CaO, Pr2O3, Nd2O3, Eu2O3, Gd2O3, Dy2O3, Er2O3, Yb203, and mixtures thereof, combined with a second oxide selected from the group consisting of zirconia and hafnia, and said CeO2 and said at least one first oxide being present in an amount not greater than 22.5 mol%.
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公开(公告)号:SG150381A1
公开(公告)日:2009-03-30
申请号:SG2005084892
申请日:2003-08-21
Applicant: UNITED TECHNOLOGIES CORP
Inventor: LITTON DAVID A , ULION NICHOLAS E , TRUBELJA MLADEN F , MALONEY MICHAEL J , WARRIER SUNIL GOVINDA
IPC: C01F17/00 , C01G25/02 , C01G27/02 , C04B35/488 , C04B35/50 , C09D5/18 , C23C4/10 , F01D5/28 , C23C28/00 , C23C30/00 , F02C7/00 , F23R3/42 , C04B35/01 , C09D1/00 , C23C14/08 , C23C14/22 , C23C16/00
Abstract: THERMAL BARRIER COATINGS WITH LOW THERMAL CONDUCTIVITY A thermal barrier coating comprising from 15.0 to 22.5 mol% of a first oxide selected from the group consisting of Dy2O3 and Yb2O3 combined with at least 77.5 mol% of a second oxide selected from the group consisting of zirconia, hafnia, and ceria.
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15.
公开(公告)号:SG128580A1
公开(公告)日:2007-01-30
申请号:SG200603841
申请日:2006-06-06
Applicant: UNITED TECHNOLOGIES CORP
Inventor: ULION NICHOLAS E
Abstract: A method for reducing thermal conductivity in thermal barrier coatings broadly includes the steps of depositing a mixture containing a ceramic matrix and a metallic dispersant capable of forming a metal oxide upon a substrate to form one or more layers; and heating the layers at a temperature and for a time sufficient to oxidize the metallic dispersant and form one or more layers of a thermal barrier coating.
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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:DE3415282A1
公开(公告)日:1984-12-06
申请号:DE3415282
申请日:1984-04-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor: FIELD THOMAS T , CHEN OTIS Y , GEARY ARTHUR R , SALKELD RICHARD W , ULION NICHOLAS E
Abstract: Concepts relating to the heat treatment of single crystal superalloy articles are disclosed. A first concept is the use of a heat treatment sequence which includes incipient melting of the article being heat treated followed by one or more steps which essentially heal the incipient melting damage. A second concept relates to the treatment of previously heat treated single crystal articles which have incipient melting. Methods are disclosed for healing this damage and for recovering the mechanical properties of such articles. A third concept disclosed is a particular cycle which permits effective heat treatment of a specific single crystal alloy composition.
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公开(公告)号:SG152051A1
公开(公告)日:2009-05-29
申请号:SG2005084884
申请日:2003-08-21
Applicant: UNITED TECHNOLOGIES CORP
Inventor: LITTON DAVID A , ULION NICHOLAS E , TRUBELJA MLADEN F , MALONEY MICHAEL J , WARRIER SUNIL GOVINDA
IPC: C01F17/00 , C01G25/02 , C01G27/02 , C04B35/488 , C04B35/50 , C09D5/18 , C23C4/10 , F01D5/28 , C23C28/00 , C23C30/00 , F02C7/00 , F23R3/42 , C04B35/01 , C09D1/00 , C23C14/08 , C23C14/22 , C23C16/00
Abstract: A thermal barrier coating comprising from 20.5 to 22.5 mol% of CeO2 combined with an oxide selected from the group consisting of zirconia, hafnia, and ceria.
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公开(公告)号:SG151095A1
公开(公告)日:2009-04-30
申请号:SG2005084967
申请日:2003-08-21
Applicant: UNITED TECHNOLOGIES CORP
Inventor: LITTON DAVID A , ULION NICHOLAS E , TRUBELJA MLADEN F , MALONEY MICHAEL J , WARRIER SUNIL GOVINDA
IPC: C01F17/00 , C01G25/02 , F01D5/28 , C01G27/02 , C04B35/488 , C04B35/50 , C09D5/18 , C23C4/10 , C23C28/00 , C23C30/00 , F02C7/00 , F23R3/42 , C23C4/04
Abstract: THERMAL BARRIER COATINGS WITH LOW THERMAL CONDUCTIVITY
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