THE INFLUENCE OF DOUBLE ELECTRICAL LAYERS IN THE "METAL-ELECTROLYTE-POLYMER" FRICTION PAIR ON ITS ENERGY-LOADING (PART ONE)
Journal Title: Проблеми тертя та зношування - Year 2017, Vol 77, Issue
Abstract
The materials of the article illustrate the estimation of the energy loading of a metal friction element in the metal-electrolyte-polymer friction pair while forming various types of double electrical layers with the release of its thermal stabilization state. The energy loading of the contact spots of the microprotrusions of the friction pairs of braking devices depends to a large extent on the electrical, thermal and chemical fields that are of a different nature to an allow-able temperature and are above the surface layers of the polymer patch. The latter is significantlyinfluenced by double electrical layers that are formed at the boundaries of the phases «metal-metal», «metal-polymer», «metal-semiconductor», «semiconductor-semiconductor» and «metal-electrolyte». When two electrically conducting phases come into contact with electrothermomechanical friction, a difference in electrical potentials arises, which is due to the formation of a double electric layer, that is an asymmetric distribution of charged particles near the phase boundary. The structure of the double electric layer does not matter for the magnitude of the reversible electrode potential, which is determined by the vari-ation of the isobaric-isothermal potential of the corresponding electrochemical reaction. At the same time, the structure of the double electric layer plays an important role in the kinetics of electrical processes, including the kinetics of the ion exchange under equilibrium conditions, characterizing the intensity of this exchange, and as a consequence, in the occurrence of the thermal stabilization state of the metallic friction element. Thus, the classical approach to the processes of the double electric layer in a «metal-electrolyte-polymer» pair is illustrated, with-out taking into account the complex heat exchange to which the metal friction element of the braking devices is exposed.
Authors and Affiliations
A. I. VOLCHENKO, N. A. VOLCHENKO, E. Yu. ANDREJCHIKOV, D. Yu. ZHURAVLOV, P. S. KRASIN
Keywords
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