Wear resistant coating
AssigneeUnited Technologies Corporation
InventorsEli N. Ross, Paul H. Zajchowski
Life of this patent
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Abstract
A wear-resistant component of a carbon seal includes a surface and a coating applied onto the surface. The coating is a chromium carbide-nickel chromium composition constituting between about 75% and about 85% by weight chromium carbide and between about 15% and about 25% by weight nickel chromium. The chromium carbide-nickel chromium composition is applied onto the surface by high velocity oxy-fuel spraying (HVOF).
Claims20
A wear-resistant component of a carbon seal, the component comprising:
- a surface;
- and
- coating applied onto the surface, wherein the coating is formed of a chromium carbide-nickel chromium composition constituting between about 75% and about 85% by weight chromium carbide and between about 15% and about 25% by weight nickel chromium;
- wherein the chromium carbide-nickel chromium composition is applied onto the surface by high velocity oxy-fuel spraying (HVOF).
A coating for providing increased wear resistance comprising:
- about 75% and about 85% by weight chromium carbide;
- and
- about 15% and about 25% by weight nickel chromium;
- wherein the coating has a substantially lamellar structure with a plurality of cubodial carbide phases.
A method of applying a wear-resistant coating comprising:
- mixing between about 75% and about 85% by weight chromium carbide and between about 15% and about 25% by weight nickel chromium to form a chromium carbide-nickel chromium mixture;
- and
- simultaneously heating the chromium carbide-nickel chromium mixture to between about 1371 degrees Celsius and about 2204 degrees Celsius and applying the chromium carbide-nickel chromium mixture at a velocity of between about 305 meters feet per second about 915 meters per second by high velocity oxygen fuel (HVOF) spraying.
Dependencies are inferred from the claim text.