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PROTECTIVE COATINGS FOR SILICON BASED SUBSTRATES WITH IMPROVED ADHESION

United States Patent Application

20090324930
A1
View the Complete Application at the US Patent & Trademark Office
An environmental coating system for silicon based substrates wherein a porous intermediate barrier layer having an elastic modulus of about 30 to 150 GPa is provided between a silicon metal containing bondcoat and a ceramic top environmental barrier layer.
Tulyani, Sonia (Manchester, CT), Bhatia, Tania (Middletown, CT)
UNITED TECHNOLOGIES CORPORATION (Hartford CT)
12/ 145,555
June 25, 2008
STATEMENT OF GOVERNMENT INTEREST [0001] The U.S. Government may have certain rights in this invention pursuant to Contract No. DE-FC26-00CH11060 awarded by the United States Department of Energy.