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US 6,586,052 B2Granted
Method for coating internal surfaces
AssigneeROLLS-ROYCE plc
InventorsGeorge Edward Creech, Kevin E. Garing
Life of this patent
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Abstract
A method for coating a nickel- or cobalt-based superalloy surface by slurry deposition/heat diffusion. The method includes preparing a slurry of a metal coating powder mixed into an adhesive carrier that will burn off ash-free during a diffusion cycle, depositing the slurry onto the surface of a Ni- or Co-based superalloy material to form a coated surface, and heating the coated surface to a temperature of at least about 1600° F. to diffuse the metal coating powder into the metal substrate.
Claims13
A method of coating a superalloy surface, said method comprising:
- (1) preparing a slurry comprising a metal coating powder and a carrier/adhesive resin that vaporizes leaving essentially no contaminating residue when heated to a temperature effective to diffuse the metal coating powder into the surface of a superalloy material;
- wherein said carrier/adhesive resin is a urethane oligomer/(meth) acrylate monomer blend that vaporizes leaving no contaminating residue when heated to a temperature of about 1250° F.;
- (2) depositing said slurry onto the surface of a superalloy material to form a coated surface;
- (3) curing the coated surface;
- and (4) heating said coated surface to a temperature and for a time effective to diffuse the coating into the surface.
2 more elements
Dependencies are inferred from the claim text.