Abstract
Galling is a form of adhesive wear that typically occurs in the presence of relatively high stresses. The worst-case result is actual seizure and cold welding of mating parts. This may occur very early in the life of parts, in many cases at original assembly. Threaded components have been the traditional sites for galling failure. With the increased use of high-alloy materials to combat corrosive effects of sour service, the tendency of threads to gall has become severe. A method of high-energy metal implanting has been developed to protect threads of all the various alloys from galling by disrupting the basic mechanism that leads to galling. This method of ion plating has been applied successfully to sliding surfaces in general.
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