Title:
Coating and a coating method of a gas turbine component
Document Type and Number:
Japanese Patent JP6126852
Kind Code:
B2
Abstract:
The present invention provides a protective coating for a gas turbine blade or other component wherein the duplex coating includes an aluminum-bearing coating, such as a diffusion aluminide, formed on a first, relatively higher temperature region of the blade/component and a later-applied chromium-bearing diffusion coating formed on an adjacent relatively lower temperature region of the blade/component subject to hot corrosion in service. The chromium-bearing coating is applied after the aluminum-bearing coating by masking that coating and depositing a metallic chromium coating on the adjacent region followed by diffusing the chromium into the blade/component alloy to form a chromium-enriched diffusion coating thereon.
Inventors:
Kenneth S. Murphy
William Sea. Busta
William Sea. Busta
Application Number:
JP2013018304A
Publication Date:
May 10, 2017
Filing Date:
February 01, 2013
Export Citation:
Assignee:
Howmet Corporation
International Classes:
C23C28/00; C23C10/28; C23C10/32; C23C26/00; C25D7/00; F01D5/28; F01D9/02; F01D25/00; F02C7/00
Domestic Patent References:
| JP2004190140A | ||||
| JP2002332563A | ||||
| JP9504832A | ||||
| JP2009519398A |
Foreign References:
| US20120060721 |
Attorney, Agent or Firm:
Toshiyuki Maruyama
Takahiro Kutoku
Toshiya Nagatsuka
Takao Miyano
Nobuyasu Nishioka
Takahiro Kutoku
Toshiya Nagatsuka
Takao Miyano
Nobuyasu Nishioka
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