公开(公告)号：AT457368T

公开(公告)日：2010-02-15

申请号：AT03251391

申请日：2003-03-07

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU ,  CETEL ALAN D ,  DRAGHI PETER J ,  PIETRUSKA NORMAN

IPC: C23C4/02 ,  F01D5/14 ,  B23P6/00 ,  C23C10/02 ,  C23G1/20 ,  F01D5/00 ,  F01D5/28 ,  F01D25/00 ,  F02C7/00

Abstract: The present invention relates to a method for repairing turbine engine components, such as vanes and blades, which have airfoils. The method broadly comprises removing oxidation debris from portions of the component by blending areas exhibiting thermal barrier coating spall and/or oxidation damage, removing a ceramic insulating layer from the component, and blending surfaces of the component where nicks, dents, and/or cracks are located. If the component has a depleted aluminum zone, the depleted zone is either removed or replenished. Further, a tip portion of the component, if damaged, is restored and tip abrasives are applied to restore the component's cutting ability. Thereafter, a ceramic coating is applied to the component.

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

IPC: C23C4/10 ,  F01D5/28 ,  C23C4/00 ,  C23C4/08 ,  C23C28/00 ,  F01D5/18 ,  F02C7/00

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.

公开(公告)号：DE69914409T2

公开(公告)日：2004-12-02

申请号：DE69914409

申请日：1999-06-11

Applicant: UNITED TECHNOLOGIES CORP

Inventor： RISTAU RAYMOND P ,  BOSE SUDHANGSHU ,  CETEL ALAN D

IPC: C23C8/10 ,  C23C14/02 ,  C23G1/00 ,  C23C28/04

Abstract: A method of preparing a superalloy component to receive a ceramic thermal barrier coating without an intermediate bond coat is disclosed. The superalloy substrate is degreased, abrasively cleaned, ultrasonically cleaned, washed in an aqueous bath containing a wetting agent, rinsed at least once, and then heat treated in an atmosphere that is non-reactive with the substrate and alumina at a temperature and time sufficient to form a surface alumina layer which is predominantly alumina.

公开(公告)号：DE69525050D1

公开(公告)日：2002-02-21

申请号：DE69525050

申请日：1995-06-14

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU

IPC: C04B35/80

公开(公告)号：DE69707365D1

公开(公告)日：2001-11-22

申请号：DE69707365

申请日：1997-06-27

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MULLOOLY JOHN FRANCIS JR ,  NISSLEY DAVID M ,  HARTER HAROLD DAVID ,  SHAH DILIP M ,  MAHLER FREDERIC H ,  HASTINGS WILLIAM J III ,  DONOVAN ROY R ,  BOSE SUDHANGSHU

IPC: F01D5/08 ,  C23C4/02 ,  C23C4/08 ,  C23C4/10 ,  C23C28/00 ,  C23C30/00 ,  F01D5/28 ,  F02C7/00 ,  F02C7/30 ,  F23R3/42 ,  C23C4/04

Abstract: The invention concerns a thermal barrier coating system (12) requiring no bond coat adherence high temperature heat treatment and having enhanced insulating capabilities such that it may be applied to gas turbine engine components of varied shape, thickness and size. In preferred embodiments, the system includes a metallic bond coat which does not require a bond coat adherence high temperature heat treatment to form a bond between the metallic bond coat and a metallic substrate to which it is applied. A porous ceramic insulating layer is deposited on the metallic bond coat. In another preferred embodiment, the porous ceramic insulating layer is deposited directly on the metallic substrate. The coating system is particularly advantageous for insulating metallic components prone to distortion in heat treatment and those requiring insulation in an as machined condition.

公开(公告)号：FI831107L

公开(公告)日：1983-10-01

申请号：FI831107

申请日：1983-03-30

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU

IPC: B01J23/42 ,  B01J23/64 ,  B01J23/648 ,  B01J23/652 ,  B01J23/89 ,  C07B31/00 ,  C07B33/00 ,  C07C67/00 ,  C22C5/04 ,  H01M4/86 ,  H01M4/92 ,  B01J

公开(公告)号：DK95983D0

公开(公告)日：1983-02-28

申请号：DK95983

申请日：1983-02-28

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU

IPC: B01J23/42 ,  B01J23/64 ,  B01J23/648 ,  B01J23/652 ,  B01J23/89 ,  C07B31/00 ,  C07B33/00 ,  C07C67/00 ,  C22C5/04 ,  H01M4/86 ,  H01M4/92 ,  B01J

公开(公告)号：DE60302396T2

公开(公告)日：2006-06-22

申请号：DE60302396

申请日：2003-08-05

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU ,  UCASZ MARK T ,  BALES DANIEL A ,  WIGHT MERRITT W ,  BURNS STEVEN M ,  TYRUS E ROYAL

IPC: C23C4/06 ,  F01D5/28 ,  C23C4/12 ,  C23C4/18 ,  C23C8/02 ,  C23C8/28 ,  C23C14/06 ,  C23C16/00 ,  C23C28/00 ,  F02C7/00

Abstract: The present invention relates to an overlay coating which has improved strength properties. The overlay coating comprises a deposited layer of MCrAlY material containing discrete nitride particles therein. The nitride particles are present in a volume fraction in the range of 0.1% to 15.0% and have a particle size in the range of from 0.1 microns to 10.0 microns. The coating may also have oxide particles dispersed therein.

公开(公告)号：SG120943A1

公开(公告)日：2006-04-26

申请号：SG200304284

申请日：2003-07-30

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU ,  BALES DANIEL A ,  UCASZ MARK T ,  WIGHT MERRITT W ,  BURNS STEVEN M ,  ROYAL TYRUS E

IPC: F01D5/28 ,  C23C4/06 ,  C23C4/12 ,  C23C4/18 ,  C23C8/02 ,  C23C8/28 ,  C23C14/06 ,  C23C16/00 ,  C23C28/00 ,  F02C7/00

Abstract: The present invention relates to an overlay coating which has improved strength properties. The overlay coating comprises a deposited layer of MCrAlY material containing discrete nitride particles therein. The nitride particles are present in a volume fraction in the range of 0.1% to 15.0% and have a particle size in the range of from 0.1 microns to 10.0 microns. The coating may also have oxide particles dispersed therein.

公开(公告)号：CA1207310A

公开(公告)日：1986-07-08

申请号：CA423191

申请日：1983-03-09

Applicant: UNITED TECHNOLOGIES CORP

Inventor： BOSE SUDHANGSHU

IPC: B01J23/42 ,  B01J23/64 ,  B01J23/648 ,  B01J23/652 ,  B01J23/89 ,  C07B31/00 ,  C07B33/00 ,  C07C67/00 ,  C22C5/04 ,  H01M4/86 ,  H01M4/92

Abstract: Noble Metal Catalyzed Reactions A method is disclosed for improving the performance of noble metal catalysts such as platinum in catalyzed chemical reactions where the reduction of oxygen is a rate limiting step. The catalytic activity of the catalyst and thus, the rate of reaction is increased by increasing the electron density of state at the Fermi level of the catalyst. This can be accomplished, for example, by alloying the noble metal catalyst with materials which increase the electron density of state.