抄録
Partly-polished CVD diamond film shows low friction without lubricant. For that reason, this material is expected as a new sliding material. In this research, the diamond films with different surface roughness were prepared, and the friction wear tests were done in the environment which controlled humidity. When the surface roughness was low, friction coefficient dropped with the fall of relative humidity. On the other hand, when surface roughness was high, it turned out that a friction coefficient becomes high with humidity reduced. This paper discusses the origin of the difference in the value of these friction coefficients.
