Patent ID: 8828312

Claim:
A method for forming a wear- and corrosion-resistant coating on an industrial component comprising: a) applying a cobalt-based dilution buffer layer having a thickness between about 0.005 and about 0.03 inch directly onto an iron-based substrate by slurry coating of a cobalt-based alloy powder followed by sintering to fuse the powder together and to the substrate, wherein the cobalt-based dilution buffer layer is a cobalt-based alloy; b) applying by welding a cobalt-based build-up layer over the cobalt-based dilution buffer layer to integrate the build-up layer and the dilution buffer layer into an integral cobalt-based wear- and corrosion-resistant layer, wherein the cobalt-based build-up layer is a cobalt-based alloy and is an outer surface layer; and c) cooling the component to room temperature.