Tribological Behavior and Mechanism of Diamond-like Carbon Films

Diamond like carbon(DLC)films have been studied for many years as wear resistant materials with low friction coefficient.Its tribological behavior is strongly affected by both the tribotesting environment and the nature of the films,which may in turn be dependent on the techniques used for the deposition of the films.This paper presents the friction and wear properties of DLC films prepared by various techniques,and reviews the influence of testing environment on the tribological behavior,such as load,sliding speed,atmosphere and humidity.Mechanisms proposed to explain the tribological properties are presented and discussed.