Very low friction for natural diamond in water of different pH values

Authors
Grillo, SE Field, JE
Citation
Se. Grillo et Je. Field, Very low friction for natural diamond in water of different pH values, EUR PHY J B, 13(3), 2000, pp. 405-408
Citations number
26
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
13
Issue
3
Year of publication
2000
Pages
405 - 408
Database
ISI
SICI code
1434-6028(200002)13:3<405:VLFFND>2.0.ZU;2-M
Abstract
Very high reductions in the friction coefficient are reported for natural d iamond sliding upon natural diamond when water is introduced at the interfa ce of contact. This reduction is found to depend on the pH value of the wat er, 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 surfac e, and of graphitisation occurring during sliding, with graphite acting as a lubricant.