Non-Equilibrium Thermodynamics with Linear Modes in Tribocouplings (Part III)

Abstract

A decrease in the surface temperature of friction pairs contributes to the intensification of the exothermic reaction with the dissociation of ions of the surface layer of the polymer lining. The electrons formed in the electrolyte are strongly oriented and their effective dipole moment is large, which leads to the inversion of many currents according to the "polymer - metal" scheme; triboadsorbed gas is adsorbed by the working surface of the metal, after which its chemical transformations occur; at the speed of tribosorption and triboreaction of the same order, the chemical reaction is shifted towards the working surface of the metal friction element; a change in the degree of dispersity and compactness of the phases that appear in the upper layer of the polymer lining, containing amorphous and vitreous substances, significantly affects their chemical activity; in this case, it is necessary to take into account the change in the Gibbs energy of the surface layer of the polymer lining, which is associated with its temperature and heat content, which affect the direction of shifting the equilibrium of the chemical reaction. When evaluating chemical reactions in tribocouples of friction pairs, the following were determined mathematically: entropy production at their elementary stages; forward and reverse reaction rates, equilibrium and affinity parameters with access to the Onsager relations.