Abstract
The low friction coefficient of carbonaceous coatings under lubrication condition are desirable for industrial fields, however, these coatings, especially hydrogenated Diamond-Like Carbon (a-C:H), do not show low friction coefficient. In this study, the ultraviolet light irradiation method to obtain low friction property for carbonaceous coating was discussed. The a-C (hydrogen free DLC) did not show any UV effect for low friction property. On the other hand, a-C:H and CNx (Carbon Nitride) coatings showed lower friction coefficient rather than no-UV irradiation condition.
