Coating processes – Spray coating utilizing flame or plasma heat – Metal or metal alloy coating
Patent
1997-05-27
1998-07-14
Bareford, Katherine A.
Coating processes
Spray coating utilizing flame or plasma heat
Metal or metal alloy coating
427455, C23C 406, C23C 410
Patent
active
057801169
ABSTRACT:
A gas turbine abradable seal is prepared by plasma spraying an oxidation resistant metallic material and boron nitride. The resultant structure comprises a metallic matrix encompassing a lubricating amount of boron nitride, with porosity of less than about 15 percent and a fabricated surface roughness of less than about 600 microinches. The reduced surface roughness and substantially reduced permeability of this seal provide substantially enhanced engine efficiency, and improved durability.
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Alent Francis X.
Appleby John W.
Davis Charles G.
Narsavage Stephen T.
Sileo Gerard A.
Bareford Katherine A.
United Technologies Corporation
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