Title:
METHOD FOR FORMING THERMAL BARRIER COATING
Document Type and Number:
Japanese Patent JP2008095191
Kind Code:
A
Abstract:
To provide a method for forming a thermal barrier coating.
The method includes providing a nickel aluminide intermetallic overlay coating on a superalloy substrate 22 and growing a controlled aluminum oxide on the overlay coating. The overlay coating is pre-oxidized to promote the growth of predominantly alpha phase alumina scale 28. The pre-oxidizing conditions may include heating the coated substrate to 1,121C for two to eight hours under vacuum. The pre-oxidized overlay coating may be used as an environmental coating or as a bond coat for a thermally insulating ceramic barrier coating 26.
Inventors:
DAROLIA RAMGOPAL
HAZEL BRIAN T
HAZEL BRIAN T
Application Number:
JP2007259328A
Publication Date:
April 24, 2008
Filing Date:
October 03, 2007
Export Citation:
Assignee:
GEN ELECTRIC
International Classes:
C23C28/00; C23C10/28; C23C14/06; F01D5/28; F02C7/06; F23R3/42
Attorney, Agent or Firm:
Kenichi Matsumoto
Hirokazu Ogura
Toshihisa Kurokawa
Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa
Arakawa Satoshi