INFLUENCE OF COUNTER BODY MATERIAL ON MATERIAL TRANSFER DURING BALL ON PLATE DRY SLIDING

Abstract

Aluminium is widely used in various sliding applications. Most of them are in lubricant sliding conditions, but in some cases dry sliding conditions can be projected or can occur due to insufficient lubricant or breaking the lubricant layer. In aluminium dry sliding conditions intensive material transfer occurs. Transferred material are aluminium particles that are firmly bonded to the counter body surface. Due to material transfer friction and wear properties are significantly changed, both are increased several times. Related to that aim of this study is to examine influence of counter body material on material transfer. Moment of material transfer occurring is one of the mysteries, for the same contact pair and same contact conditions it can occur at the begging of sliding contact, but also it can happen much later. Five different counter body material were used for presented tests: Inox 440C, Ruby, Saphire, SiN, and Al2O3.