公开(公告)号：CA1256753A

公开(公告)日：1989-07-04

申请号：CA541705

申请日：1987-07-09

Applicant: UNITED TECHNOLOGIES CORP

Inventor： RADZAVICH THOMAS J ,  NORDSTROM DONALD G ,  SHEFFLER KEITH D

IPC: C23C4/02 ,  C23C4/12 ,  C23C4/18 ,  F01D5/28

Abstract: Method for Preventing Closure of Cooling Holes in Hollow, Air Cooled Turbine Engine Components During Application of a Plasma Spray Coating This invention relates to the application of plasma sprayed coatings to the surface of components which have small holes therein, such as hollow, air cooled blades or vanes used in turbine engines. Coating material is prevented from depositing on the wall surface of the holes by the presence of fugitive plugs in the holes during the coating process. The plugs are removed after the coating has been applied, resulting in the holes being open and unobstructed.

公开(公告)号：MX166580B

公开(公告)日：1993-01-20

申请号：MX734987

申请日：1987-07-14

Applicant: UNITED TECHNOLOGIES CORP

Inventor： RADZAVICH THOMAS JOSEPH ,  NORDSTROM DONALD G ,  SHEFFLER KEITH D

IPC: C23C4/02 ,  C23C4/12 ,  C23C4/18 ,  F01D5/28 ,  B21D53/78 ,  B23P15/02 ,  B23P9/00

Abstract: This invention relates to the application of plasma sprayed coatings to the surface of components which have small holes therein, such as hollow, air cooled blades or vanes used in turbine engines. Coating material is prevented from depositing on the wall surface of the holes by the presence of fugitive plugs in the holes during the coating process. The plugs are removed after the coating has been applied, resulting in the holes being open and unobstructed.

公开(公告)号：CA1330638C

公开(公告)日：1994-07-12

申请号：CA550563

申请日：1987-10-29

Applicant: UNITED TECHNOLOGIES CORP

Inventor： VINE RAYMOND W ,  SHEFFLER KEITH D ,  BEVAN CHARLES E

IPC: C23C4/00 ,  C23C4/02 ,  C23C4/06 ,  C23C4/08 ,  C23C4/10 ,  F01D5/28 ,  F23R3/00

Abstract: Thermal Barrier Coating System A thermal barrier coating system for the protection of nickel and cobalt base superalloys at elevated temperature comprises 7% yttria partially stabilized zirconia plasma sprayed in air on a plasma sprayed NiCoCrAlY bond coat which has been plasma sprayed in air.

公开(公告)号：DE69933427T2

公开(公告)日：2007-08-16

申请号：DE69933427

申请日：1999-12-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MARCIN JOHN J ,  MURRAY STEPHEN D ,  SHEFFLER KEITH D

IPC: C23G1/20 ,  F02C7/00 ,  F01D5/00 ,  F01D25/00

Abstract: The invention relates to a process for removing ceramic thermal barrier layers from gas turbine engine hardware. A combination of chemical and mechanical steps are used to remove the thermal barrier coating from the substrate without removing the bond coat from the substrate. In particular the process includes a caustic solution treatment in an autoclave under controlled conditions followed by a mechanical abrasion process which leaves the bond coat on the substrate in condition to receive a repair ceramic thermal barrier coating.

公开(公告)号：DE69933427D1

公开(公告)日：2006-11-16

申请号：DE69933427

申请日：1999-12-20

Applicant: UNITED TECHNOLOGIES CORP

Inventor： MARCIN JOHN J ,  MURRAY STEPHEN D ,  SHEFFLER KEITH D

IPC: C23G1/20 ,  F02C7/00 ,  F01D5/00 ,  F01D25/00

Abstract: The invention relates to a process for removing ceramic thermal barrier layers from gas turbine engine hardware. A combination of chemical and mechanical steps are used to remove the thermal barrier coating from the substrate without removing the bond coat from the substrate. In particular the process includes a caustic solution treatment in an autoclave under controlled conditions followed by a mechanical abrasion process which leaves the bond coat on the substrate in condition to receive a repair ceramic thermal barrier coating.