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US 2014/0004372 A1Published application
Chromium diffusion coating
OwnerKevin L. Collins, Michael J. Minorinventors
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Abstract
A method of diffusion coating an article includes applying a mixture to an article. The mixture consists essentially of an active coating metal of chromium powder, alumina powder, a diffusion activator of chromium(III) chloride and an organic carrier material. The article is then heated at a diffusion temperature to cause diffusion of the chromium powder into the article to form a diffusion coating on the article.
Claims20
A method of diffusion coating an article, the method comprising:
- applying a mixture to an article, the mixture consisting essentially of an active coating metal of chromium powder, alumina powder, a diffusion activator of chromium(III) chloride and an organic carrier material;
- and
- heating the article at a diffusion temperature to cause diffusion of the chromium powder into the article to form a diffusion coating on the article.
A method of preparing an article for diffusion coating, the method comprising:
- forming a mixture consisting essentially of an active coating metal of chromium powder, alumina powder, a diffusion activator of chromium(III) chloride and an organic carrier material;
- and
- applying the mixture on an article that is to be diffusion coated.
An article for diffusion coating, the article comprising:
- a body including a surface that is to be diffusion coated;
- and
- a mixture disposed on the surface that is to be diffusion coated, the mixture consisting essentially of an active coating metal of chromium powder, alumina powder, a diffusion activator of chromium(III) chloride and an organic carrier material.
Dependencies are inferred from the claim text.