Coating processes – Spray coating utilizing flame or plasma heat – Metal oxide containing coating
Patent
1987-11-19
1994-01-11
Pianalto, Bernard
Coating processes
Spray coating utilizing flame or plasma heat
Metal oxide containing coating
427201, 427203, 427204, 427205, 427367, 4273837, 427405, 4274193, 427422, 427426, 427427, 427452, 427456, 427576, 427578, 427580, B05D 100
Patent
active
052779360
ABSTRACT:
The oxidation resistance of MCrAlY-type overlay coatings is improved by incorporating small discrete oxide particles into the coating. The particles are preferably yttrium oxide, and the coating is applied by simultaneously plasma spraying MCrAlY-type powder particles and oxide particles onto a substrate in a nonoxidizing atmosphere. Improvements in resistance to rumpling has also been observed in coatings applied according to this invention.
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J R. Rairden and E. M. Habesch--"Low-Pressure-Plasma-Deposited Coatings Formed from Mechanically Alloyed Powders"--Mar. 18, 1981--pp. 353-360 Metallurgical and Protective Coatings.
Gupta Dinesh K.
Olson Walter E.
Pianalto Bernard
Rashid James M.
United Technologies Corporation
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