| Abstrakt: |
The materials of the article consider the thermal stabilization state of the drum rim, which is supported by the contact ionized gaseous medium and moisture desorption products (from the surface layer of the lining) between the double electric layers (polished working surface of the drum the surface of the rim of the drum of the vehicle) - the lower level of the near-surface layer of the overlays). The resulting saturation currents contribute to the inversion of heat fluxes from the polished working surface of the rim of the drum of the vehicle in the near-surface layers of the pads, contributing to its thermal stabilization state. In highly diluted electrolyte solutions, the boundary of the diffusion layer can be displaced beyond the boundary of the so-called slip layer, ie the plane beyond which the movement of the liquid along the interfacial boundary becomes possible. Thus, as the fluid flows along the solid / liquid boundary, the bulk charge moves and, accordingly, a potential difference appears along the fluid flow. The phenomenon associated with the appearance of a bulk charge in the electrolyte solution outside the sliding plane is called electrokinetic. The sliding plane potential is called the electrokinetic potential. Double electric layers in friction pairs play an important role in amplifying the tribo effect in friction pairs of brake devices. The existence of a double electric layer on the interfacial boundary of two media (working surface of the brake drum - the working surface of the polymer friction element), as well as on hot and cold surfaces of the nearsurface friction lining plays an important role not only in ion exchange between friction surfaces. and in the processes of adsorption of ions of the surfaces of brake friction pairs. The presence of a double electric layer significantly affects the electrosurface processes: conductivity, polarization of dispersed particles, mass and energy displacement through charged dispersed systems, electrostatic interaction between charged particles, and so on. In this case, electrosurface processes are components of electrokinetic phenomena that occur in the near-surface layers of friction pads. It is important to note that the basic data on the structure of the electric double layer are obtained from capacitive measurements in the absence of charge transfer through the interfacial boundary. In real operating conditions of molecular electronics devices, the process is complicated: it becomes possible to transfer charges due to electrochemical reaction, ionization of adsorbed particles or change the charge of the electric double layer when the potential is shifted. In this case, the measured capacitance represents not only the capacitance of the double layer, which reflects changes in the charge of the electrode, but also the course of electrochemical reactions on it. The capacitance measured in such conditions can be called polarization capacitance or simply pseudocapacitance. [ABSTRACT FROM AUTHOR] |
