Abstract
Recent work has shown that surface active environments can be used to significantly and predictably influence the near-surface flow behaviour (i.e. hardness) of such solids as magnesium oxide, calcite, alumina, quartz and soda-lime (s.l.) glass. Specifically, these solids are hardest in environments in which theirζ-potential is approximately zero. The results of the present study demonstrate that such chemomechanical effects can, under certain conditions, also be used to affect and control sliding friction behaviour. In particular, it is shown that for magnesium oxide and s.l. glass in various environments the coefficient of frictionμ f is a minimum when ζ ≃ 0. This and other results are described, and some mechanistic and practical implications discussed.
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Macmillan, N.H., Huntington, R.D. & Westwood, A.R.C. Chemomechanical control of sliding friction behaviour in non-metals. J Mater Sci 9, 697–706 (1974). https://doi.org/10.1007/BF00761789
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DOI: https://doi.org/10.1007/BF00761789