DLC 膜の潤滑油中摩耗に及ぼす三酸化モリブデンの影響

抄録

To prolong the lifetime of parts in automotive or other industrial machines, tools, elements are also required, and covering its surface by hard material is one of the strong solution. Diamond-Like Carbon (DLC) is already known as promising candidate to decline wear volume and generate low friction between surfaces. Recently, however, the DLC is required to use in several situation especially in engine oil, automatic fluid oil and so on. In that situation, chemical absorption abilities of additives toward DLC is necessary. MoDTC is known one of worth additives in engine oil to adhere metal surface generating tribo-chemical layer on the surface. MoDTC can change its structure to MoS₂ or MoO₃, thus MoO₃ is assumed to have harmful influence on increasing wear of DLC. In this study, we hypothesized that MoO₃ could play an important role to cause increasing of wear by as chemical or abrasive effect. So, the effect of MoO₃ particle effect on DLC's wear was investigated. The MoO₃ particles with different amount were prepared to add into poly-α-olefin. The ball-on-disk type friction tests were performed and the wear volume of two different DLCs were compared.