Coating processes – Spray coating utilizing flame or plasma heat – Silicon containing coating
Patent
1997-11-12
1999-02-09
Bareford, Katherine A.
Coating processes
Spray coating utilizing flame or plasma heat
Silicon containing coating
427453, C23C 410
Patent
active
058691464
ABSTRACT:
Coatings containing at least 85% by volume crystalline mullite with less than 15% by volume of amorphous material and mullite dissociation phases are plasma sprayed onto the surface of a silicon based ceramic substrate by closely controlling the plasma spray parameters including the mullite feed stock and its particle size, the nozzle outlet stand-off distance, movement of the substrate past the plasma flow, back side heating of the substrate and the powder feed rate through the plasma spray gun.
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Lee, Kang N. et al. "Oxidation Behavior of Mullite-Coated SiC and SiC/SiC Composites under Thermal Cycling between Room Temperature and 1200.degree.-1400.degree.." Journal of the American Ceramic Society, vol. 79(3), 1996, pp. 620-626. (no month date).
Lee, Kang N. et al. "New Generation of Plasma-Sprayed Mullite Coatings on Silicon Carbide." Journal of the American Ceramic Society, vol. 78(3), 1995, pp. 705-710. (no month date).
Chin Stephen
Cotnoir Glenn A.
Eaton, Jr. Harry E.
Ellis Charles A.
Foster George E.
Bareford Katherine A.
Curbelo Pamela J.
United Technologies Corporation
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