ARTICLE WITH STRAIN TOLERANT CORROSION PROTECTING COATING

Title:

ARTICLE WITH STRAIN TOLERANT CORROSION PROTECTING COATING

Document Type and Number:

Japanese Patent JP2007169786

Kind Code:

A

Abstract:

To provide a coating composition preventing the corrosion of turbine engine components.

A corrosion resistant coating (64) for gas turbine engine includes a glassy ceramic matrix (63) wherein the glassy matrix is silica-based, and includes corrosion resistant particles (65) selected from refractory particles and non-refractory MCrAlX particles, and combinations thereof. The corrosion resistant particles (65) are substantially uniformly distributed within the matrix (63), and provide the coating (64) with corrosion resistance. Importantly the coating (64) has a coefficient of thermal expansion (CTE) greater than that of alumina at engine operating temperatures. The CTE of the coating (64) is sufficiently close to the substrate material (60) such that the coating (64) does not spall after frequent engine cycling at temperatures above 648.9°C (1,200°F).

Inventors:

HAZEL BRIAN T
MURPHY JANE A
SKOOG ANDREW J

Application Number:

JP2006341171A

Publication Date:

July 05, 2007

Filing Date:

December 19, 2006

Export Citation:

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Assignee:

GEN ELECTRIC

International Classes:

C23C28/00; F01D5/28; F02C7/00

Domestic Patent References:

JP2002256452A	2002-09-11
JP2002115084A	2002-04-19
JPH0874068A	1996-03-19
JP2002530525A	2002-09-17
JPS5837146A	1983-03-04
JPS6456880A	1989-03-03
JPH07238353A	1995-09-12

Attorney, Agent or Firm:

Kenichi Matsumoto
Hirokazu Ogura
Toshihisa Kurokawa
Arakawa Satoshi

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