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Oxidation resistant nanocrystalline MCrAl(Y) coatings and methods of forming such coatings

United States Patent

July 29, 2014
View the Complete Patent at the US Patent & Trademark Office
The present disclosure relates to an oxidation resistant nanocrystalline coating and a method of forming an oxidation resistant nanocrystalline coating. An oxidation resistant coating comprising an MCrAl(Y) alloy may be deposited on a substrate, wherein M, includes iron, nickel, cobalt, or combinations thereof present greater than 50 wt % of the MCrAl(Y) alloy, chromium is present in the range of 15 wt % to 30 wt % of the MCrAl(Y) alloy, aluminum is present in the range of 6 wt % to 12 wt % of the MCrAl(Y) alloy and yttrium, is optionally present in the range of 0.1 wt % to 0.5 wt % of the MCrAl(Y) alloy. In addition, the coating may exhibit a grain size of 200 nm or less as deposited.
Cheruvu; Narayana S. (San Antonio, TX), Wei; Ronghua (San Antonio, TX)
Southwest Research Institute (San Antonio, TX)
12/ 760,864
April 15, 2010
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with U.S. Government support under Contract No. DE-FC26-07NT43096 awarded by the Department of Energy. The Government has certain rights in this invention.