Patent ID: 6434876
Filing Date: 2002-08-20
Classification: C23C,Y02T

Abstract:
A method for coating an article, comprising the steps of:furnishing an article substrate; thereafter applying a particle-entrapped coating to the article substrate; and thereafter applying an aluminum-containing coating overlying the particle-entrapped coating, the step of applying the aluminum-containing coating including the steps of providing a source of aluminum contacting the particle-entrapped coating that deposits aluminum onto the particle-entrapped coating at a coating temperature, and heating the article substrate to the coating temperature so that the aluminum-containing coating is deposited onto the particle-entrapped coating, and the aluminum-containing coating and the particle-entrapped coating are diffused into the article substrate, the step of applying the alumninum-containing coating to occur without substantial prior interdiffusing of the particle-entrapped coating with the article substrate as a separate step.