Thermal barrier coating for a superalloy article and method...

Details Thermal barrier coating for a superalloy article and method... Thermal barrier coating for a superalloy article and method...

B - Operations, Transporting

32

B

B32B 15/04 (2006.01) C23C 14/08 (2006.01) C23C 28/00 (2006.01)

Patent

CA 2165932

A ceramic thermal barrier coating coating (14) for superalloy articles (10) is caused to adhere more strongly to an aluminium-containing alloy bond coating (13) by diffusing platinum into the bond coating (13) so as to ensure formation of a platinum rich outer layer (20) of the bond coating (12a), including a platinum aluminide surface layer (22) of the bond coating (12a), and by subsequent formation of a thin coherent layer (16a) of alumina between the platinum aluminide surface layer (22) and the ceramic coating (14), which reduces the tendency of the ceramic coating (14) to spall during service.

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