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Tribological Properties Of Fullerenes C60 And C70 Microparticles, Wei Zao, Jinke Tang, Ashok Puri, Ray L. Sweany, Yuxin Li, Liquan Chen

Physics Faculty Publications

The frictional behaviors of fullerenes C₆₀ and C₇₀ were studied because they were speculated to be solid lubricants. For the sublimated pure C₆₀ films on Si(001), a high friction coefficient (0.55–0.8) was observed under different loads and pin materials. For the C₇₀ film, the friction coefficient showed a pin dependence, which changed from 0.5 with an Al₂O₃ pin to about 0.9 with a 440 stainless steel pin. The relatively high friction coefficients of C₆₀ and C₇₀ films were due to the tendency of the C₆₀ and C₇₀ particles to …