Title:
表面合金化した高温合金
Document Type and Number:
Japanese Patent JP2004501278
Kind Code:
A
Abstract:
There is provided a surface alloyed component which comprises a base alloy with a diffusion barrier layer enriched in silicon and chromium being provided adjacent thereto. An enrichment pool layer is created adjacent the diffusion barrier and contains silicon and chromium and optionally titanium or aluminum. The method comprises depositing a surface alloy on the base alloy at a temperature in the range of 400 to 1000° C. and heat treating the surface alloy at a ramp temperature rate of at least 5C°/minute, preferably 10 to 20° C./minute, to a desired maximum temperature at which the surface alloyed component is maintained for a time sufficient to provide the enrichment pool or the enrichment pool with a diffusion barrier layer. A reactive gas treatment may be used to generate a replenishable protective oxide scale of alumina or chromia on the outermost surface of the surface alloyed component.
Inventors:
Whiski Key Andrew George
Fisher Gerry Anthony
Petron Sabino Steven Anthony
Mand Yum Rada Krishna Chakra Bercy
Fisher Gerry Anthony
Petron Sabino Steven Anthony
Mand Yum Rada Krishna Chakra Bercy
Application Number:
JP2001586634A
Publication Date:
January 15, 2004
Filing Date:
May 24, 2001
Export Citation:
Assignee:
Surface Engineered Products Corporation
International Classes:
C22C1/00; C10G9/20; C23C4/18; C23C10/52; C23C12/02; C23C14/14; C23C16/06; C23C26/00; C23C30/00; (IPC1-7): C23C30/00; C22C1/00; C23C14/14; C23C16/06
Attorney, Agent or Firm:
Hiroshi Okawa