Patent Number: 6,332,931

Title: Method of forming a diffusion aluminide-hafnide coating

Abstract: A process for forming a diffusion aluminide-hafnide coating on an article, such as a component for a gas turbine engine. The process is a vapor phase process that generally entails placing the article in a coating chamber containing a halide activator and at least one donor material. The donor material collectively consists essentially of at least 0.5 weight percent hafnium and at least 20 weight percent aluminum with the balance being chromium and/or cobalt.

Inventors: Das; Nripendra N. (West Chester, OH), Mantkowski; Thomas E. (Madeira, OH), Heidorn; Raymond W. (Fairfield, OH), Miller; Joshua L. (West Chester, OH), Pfaendtner; Jeffrey A. (Blue Ash, OH)

Assignee: General Electric Company

International Classification: C23C 10/14 (20060101); C23C 10/00 (20060101); C23C 008/00 ()

Expiration Date: 12/25/2018