Process for Forming an Outward Grown Aluminide Coating

Abstract

In one embodiment, a method for forming an aluminide coated article comprises: applying an aluminum composition to the article to form a precursor coating, heating the article to a migration temperature sufficient to diffuse a metal from the article into the precursor coating, and gasifying aluminum in the aluminum composition at a gasification temperature that is greater than or equal to the migration temperature. An outward grown aluminide coating forms on the article. In another embodiment, a method for forming an aluminide coated article, comprises: applying an aluminide composition an article to form a precursor coating, heating the article to a migration temperature of greater than or equal to 1,065° C., gasifying the aluminum at a gasification temperature of greater than or equal to 1,065° C., and forming an outward grown aluminide coating on less than 100% of a surface of the article.

Dependencies are inferred from the claim text.