Low cost inovative diffused MCrAIY coatings

Abstract

The present invention provides a low cost diffused MCrAlYX type coating that may be used on a surface of gas turbine engine component such as a turbine blade. The coating may be used as a protective coating that impedes the progress of corrosion, oxidation, and sulfidation in superalloy materials that comprise the substrate of the turbine blade. The method of depositing the coating includes steps such as: (1) forming an active elements modified chromium diffusion coating; (2) depositing noble metals such as platinum to a thickness in the range of 3 to 6 microns through known procedures such as electroplating or PVD techniques; (3) performing a diffusion cycle in the temperature range of approximately 1800° F. to 2000° F.; (4) performing an aluminizing step to generate coating microstructures; and (5) optionally performing a post coat diffusion treatment in the 1900° F. to 2025° F. temperature range.

Dependencies are inferred from the claim text.