Title:
CORROSION-RESISTANT DIFFUSION COATINGS
Document Type and Number:
WIPO Patent Application WO/2013/070520
Kind Code:
A3
Abstract:
A metal article such as a gas turbine component may include a super-diffusion coating with unusually high content of the desired constituent. The coating may be provided by combining two or more diffusion coating processes, each process interdiffusing the desired constituent with the metal article from a different metal source. The metal article can be placed in physical contact with a metal source in powder form as a first source, and the article can also be exposed an additional metal vapor source. Super-chromide coatings can be produced with alpha-chrome content in a manner that also provides the coating with sufficient ductility for long-term durability. For example, a shank portion of a gas turbine blade may be provided with a chromide coating with at least a portion of the coating having from 60-90% chromium content.
More Like This:
Inventors:
BERGER CHARLES CLIFFORD (US)
Application Number:
PCT/US2012/063287
Publication Date:
July 11, 2013
Filing Date:
November 02, 2012
Export Citation:
Assignee:
BARSON COMPOSITES CORP (US)
International Classes:
C23C8/00
Foreign References:
| US20090185912A1 | 2009-07-23 | |||
| EP1079073B1 | 2010-03-10 | |||
| US6334907B1 | 2002-01-01 | |||
| US20090136664A1 | 2009-05-28 | |||
| KR20010019769A | 2001-03-15 |
Attorney, Agent or Firm:
STEVENS, James, D. (P.O. Box 4390Troy, MI, US)
Download PDF: