Coating processes – Spray coating utilizing flame or plasma heat – Metal oxide containing coating
Patent
1991-09-13
1993-08-17
Owens, Terry J.
Coating processes
Spray coating utilizing flame or plasma heat
Metal oxide containing coating
427250, 427252, 427405, 4274192, 427456, 428609, 428621, 428633, 428680, 428937, B05D 102
Patent
active
052367452
ABSTRACT:
An article is coated with a thermal barrier coating system to increase its thermal cyclic spallation life. A single layer bond coating is applied to the surface of the article to a surface roughness in the range of 200 to 600 microinches RA by low pressure plasma spraying of coarse MCrAlY alloy particles into the surface. A metal selected from aluminum and its alloys is applied to the bond coating by aluminiding and is diffused into the bond coating to provide an aluminum-rich bond coating metal outer surface, while substantially retaining the surface roughness of about 2300 to 600 microinches RA. A metal oxide thermal barrier coating layer is then applied onto the aluminum-rich bond coating outer surface.
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Gupta Bhupendra K.
Nagaraj Bangalore A.
Reeves Jim D.
General Electric Company
Maria Carmen Santa
Owens Terry J.
Squillaro Jerome C.
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