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Title Solid-liquid transition of ultrathin lubricant film
Authors Khomenko, Oleksii Vitaliiovych  
Yushchenko, Olha Volodymyrivna  
ORCID http://orcid.org/0000-0001-8755-9592
http://orcid.org/0000-0003-0901-3919
Keywords
Type Article
Date of Issue 2003
URI http://essuir.sumdu.edu.ua/handle/123456789/16192
Publisher Phys. Rev. E
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Citation A.V. Khomenko, O.V. Yushchenko, Solid-liquid transition of ultrathin lubricant film// Phys. Rev. E. - 2003. - V. 68. - P. 036110-6
Abstract We represent a melting of ultrathin lubricant film by friction between atomically flat surfaces as a result of action of spontaneously appearing elastic field of stress shear component caused by the external supercritical heating. The kinetics of this solid-liquid transition is described by the Maxwell-type and Voigt-Kelvin equations for viscoelastic matter as well as by the relaxation equation for temperature. We show that these equations coincide formally with the synergetic Lorentz system, where the stress acts as the order parameter, the conjugate field is reduced to the elastic shear strain, and the temperature is the control parameter. Using the adiabatic approximation we find the steady-state values of these quantities. Taking into account the deformational defect of the shear modulus, we show that lubricant melting is realized according to mechanism of the first-order transition. The critical temperature of the friction surfaces increases with growth of the characteristic value of shear viscosity and decreases with growth of the shear modulus value linearly. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/16192
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