低い堆積アルミニウムレベルを有するボンディングコートに関連する施工方法

Japanese Patent JP5188702

B2

A method for applying a NiAl based bond coat and a diffusion aluminide coating to a metal substrate is disclosed. The method comprises providing a superalloy substrate, the superalloy substrate having an external surface (38); and optionally cleaning (140) the external surface (38) of the superalloy substrate. The method further comprises coating a portion of the external surface of the superalloy substrate, by physical vapor deposition with a layer of a NiAl based metal alloy (160), wherein the deposited NiAl based metal alloy includes a controlled amount of about 6 to 25 weight percent aluminum and additionally the deposited aluminum level of the NiAl based metal alloy is controlled to be about 50-100% of its final level after aluminizing to form a coated external portion; and subsequently, simultaneously aluminizing (180) the coated external portion and a different surface of the superalloy substrate. Advantageously, a diffusion aluminide layer is formed on the different surface and the NiAl based metal alloy becomes a NiAl based bond coat, wherein the NiAl based bond coat comprises between about 12 to 25 weight percent aluminutn, and the NiAl based bond coat has a uniform distribution of aluminum and other modifying elements selected from at least one of Cr, Zr and Hf throughout the NiAl based bond coat.

Mark Daniel Gorman
Brett Allen Boutwell
Robert George Zimmerman, Jr.

JP2006328055A

April 24, 2013

December 05, 2006

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GENERAL ELECTRIC COMPANY

C23C28/02; C23C10/28; C23C14/14; F01D5/28; F02C7/00

JP2005120478A
JP2002348681A
JP2001226758A
JP2002235557A

WO2005064031A1

Arakawa Satoshi
Hirokazu Ogura
Toshihisa Kurokawa

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