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Method for applying a diffusion barrier interlayer for high temperature components

United States Patent

March 8, 2016
View the Complete Patent at the US Patent & Trademark Office
A coated substrate and a method of forming a diffusion barrier coating system between a substrate and a MCrAl coating, including a diffusion barrier coating deposited onto at least a portion of a substrate surface, wherein the diffusion barrier coating comprises a nitride, oxide or carbide of one or more transition metals and/or metalloids and a MCrAl coating, wherein M includes a transition metal or a metalloid, deposited on at least a portion of the diffusion barrier coating, wherein the diffusion barrier coating restricts the inward diffusion of aluminum of the MCrAl coating into the substrate.
Wei; Ronghua (San Antonio, TX), Cheruvu; Narayana S. (San Antonio, TX)
12/ 616,599
November 11, 2009
GOVERNMENT CONTRACT CLAUSE This invention was made with United States Government support under Contract No. DE-FC26-07NT43096, awarded by the U.S. Department of Energy. The United States Government has certain rights in this invention.