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Title Effect of correlated temperature fluctuations on the phase dynamics in an ultrathin lubricant film
Authors Khomenko, Oleksii Vitaliiovych  
ORCID http://orcid.org/0000-0001-8755-9592
Keywords stick-slip friction
phase diagrams
ultrathin lubricant film
Type Article
Date of Issue 2007
URI http://essuir.sumdu.edu.ua/handle/123456789/16210
Publisher Pleiades publishing, Ltd
License
Citation A.V. Khomenko, Effect of correlated temperature fluctuations on the phase dynamics in an ultrathin lubricant film // Technical Physics, Vol. 52, No. 3, pp. 320-327 (2007); http://dx.doi.org/10.1134/S1063784207030061.
Abstract The melting of an ultrathin lubricant film at friction between atomically smooth surfaces is studied with allowance for fluctuations of its temperature, which are described by the Ornstein-Uhlenbeck process. The behavior of the most probable types of shear stresses arising in the lubricant is considered, and phase diagrams for second- and first-order phase transformations (the melting of an amorphous lubricant and that of a crystalline lubricant, respectively) are constructed. It is shown that, in the former case, lubricant temperature fluctuations lead to the formation of a stick-slip friction domain separating the domains of dry and sliding friction, which is typical of first-order transitions. In the latter case, three domains of stick-slip friction arise, which mark the transitions between dry friction and metastable and stable sliding friction. As the time of correlation of lubricant temperature fluctuations gets longer, the temperature of rubbing surfaces rises to the point where sliding friction sets in. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/16210
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