Patent ID: 8603571

Claim:
A method of enhancing the corrosion-resistance of a metal alloy article comprising a first metal alloy member with a surface and a second metal alloy member with a surface and of dissimilar composition, the first and second members being in contact along a previously-formed joint and thereby forming on the article, in the presence of moisture or aqueous road salt solution, a galvanic corrosion-susceptible location comprising the formed joint and joint-abutting portions of the surfaces of each of the alloy members, the method comprising: applying an adherent corrosion resisting metal coating layer to the article, the coating being adapted to exclude the moisture or aqueous road salt solution from contact with the article surface, the coating layer being applied to at least the corrosion susceptible location by rotating a consumable tool of a corrosion-resisting material, compatible with each of the metal alloy compositions of the metal members while applying a force to press the tool against the surface of the article; and thereby transferring material from the tool to the surface of the article to deposit on the surface of the article at the corrosion-susceptible location the transferred portion of the consumable tool as the adherent, corrosion-resisting coating layer adapted to exclude moisture or an aqueous road salt solution from contact with the article.