Fretting of AISI 9310 Steel and Selected Fretting-Resistant Surface Treatments

Abstract

Fretting wear experiments were conducted with uncoated AISI 9310 mating surfaces and with combinations incorporating a selected coating to one of the mating surfaces. Wear measurements and SEM observations indicated that surface fatigue, as made evident by spallation and surface crack formation, is an important mechanism in promoting fretting wear to uncoated 9310. Increasing humidity resulted in accelerated fretting and a very noticeable difference in nature of the fretting debris. Of the coatings evaluated, aluminum bronze with a polyester additive was most effective at reducing wear and minimizing fretting damage to the mating uncoated surface by means of a self-lubricating film that developed on the fretting surfaces. Chromium plate performed as an effective protective coating, itself resting fretting and not accelerating damage to the uncoated surface. Presented at the 32nd Annual Meeting in Montreal, Quebec, Canada, May 9–12, 1977