Thermodynamic and kinetic analyses of probable chemical reactions in the tribocontact zone and the effect of heavy pressure on evolution of adsorption processes

The paper presents thermodynamic and kinetic analyses of probable chemical reactions and adsorption processes depending on their energy, temperature, and pressure. It is shown that only lubricating adsorption films that appear on the rubbing surfaces due to mechanoactivated reactions can play a significant role in improving the tribological properties of a sliding contact. It is also demonstrated that heavy pressures in the zone of real contact between the asperities of rubbing surfaces enhance equilibrium adsorption of low-molecular-weight additives and of a number of high-molecular-weight additives to fluid lubricants.