Very low friction for natural diamond in water of different pH values |
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| Authors: | SE Grillo JE Field |
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| Institution: | (1) PCS, Cavendish Laboratory, Department of Physics, University of Cambridge, Madingley Road, Cambridge CB3 OHE, UK, GB |
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| Abstract: | Very high reductions in the friction coefficient are reported for natural diamond sliding upon natural diamond when water
is introduced at the interface of contact. This reduction is found to depend on the pH value of the water, the load and the
sliding velocity. The results are interpreted in terms of the reduction of adhesion due to adsorption of the liquid on the
surface, and of graphitisation occurring during sliding, with graphite acting as a lubricant.
Received 15 September 1999 |
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| Keywords: | PACS 81 40 Pq Friction lubrication and wear - 46 55 +d Tribology and mechanical contacts - 81 05 Tp Fullerenes and related materials diamonds graphite |
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