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Environmental and Thermal Barrier Coating to Provide Protection in Various Environments

United States Patent Application

20080026248
A1
View the Complete Application at the US Patent & Trademark Office
An article and method to provide protection in various environments. The article may include a metal substrate having a first coefficient of thermal expansion, a magnesium oxide-based layer having a second coefficient of thermal expansion, and a bond layer disposed between the metal substrate and the magnesium oxide-based layer. The bond layer may include a third coefficient of thermal expansion substantially intermediate the first and second coefficients of thermal expansion to facilitate thermal compatibility between the metal substrate and the magnesium oxide-based layer. Further, the magnesium oxide-based layer may be substantially non-porous, thereby providing a hermetic seal limiting gases, particulates, steam and fluid access to the metal substrate.
Balagopal, Shekar (Sandy, UT), Pendleton, Justin (Salt Lake City, UT), Akash, Akash (Salt Lake City, UT), Kennedy, Kevin (Salt Lake, UT)
11/ 627,233
January 25, 2007
U.S. GOVERNMENT RIGHTS [0002] This invention was made in part with government support under Grant No.: DEFG-0203ER83620 awarded by the United States Department of Energy. The Government has certain rights in the invention.