Abstract
Running-in process is important for sliding parts of machines, because it has an influence on friction and wear properties of the sliding materials. If the running-in process is not well done, serious troubles such as seizure and abnormal wear may occur in the machines. DLC (Diamond-like carbon) films are used in various fields as an excellent tribo-material because of their low friction coefficient and their high wear resistance. However, the running-in behavior of DLC films is not clarified quantitatively. In the present work, we investigated an influence of loading rate to running-in process of DLC films from the stand point of friction coefficient and worn surface. As a result, in case of combination DLC films and FC230, friction coefficient increased with increasing loading rate. Also there was good correlation between protruding peak height and friction coefficient.
