Thermodynamics and kinetics of boundary friction

Details Thermodynamics and kinetics of boundary friction Thermodynamics and kinetics of boundary friction

2010-07-17

arxiv.org/abs/1007.2931v2

Tribology International, 2011, Vol. 44, no. 4, pp. 476-482

Physics

Condensed Matter

Statistical Mechanics

14 pages, 6 figures, 33 references

Scientific paper

10.1016/j.triboint.2010.12.005

A deterministic theory describing the behavior of an ultrathin lubricant film between two atomically-smooth solid surfaces is proposed. For the description of lubricant state the parameter of excess volume arising due to chaotization of solid medium structure in the course of melting is introduced. Thermodynamic and shear melting is described consistently. Dependences of friction force on temperature of lubricant, shear velocity of rubbing surfaces, and pressure upon surfaces are analyzed. Within the framework of a simple tribological model the stick-slip mode of friction, when the lubricant periodically melts and solidifies, is described. The obtained results are qualitatively compared with the experimental data.

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