Velikodny D. Regularities of wear of direct and inverse tribosystem with controlled heat flows

The dissertation is focused on the study of the mechanisms and factors effect self-organizing on friction surfaces of direct and inverse tribosystem with controlled heat flows and the development of practical recommendations for designing tribosystems with the purpose to reducing the speed of wear and losses on friction. In the work of the obtained dependence of the tribotechnical characteristics of direct and inverse tribosystems with thermal resistances on friction surfaces. It is established, that the direction of the heat flow in the direction of the most wear-resistant triboelement will lead to lower speed of wear and friction coefficient of the tribosystem due to processes of self-organizing on friction surfaces. With the help of micro structural analysis of the friction surfaces of the established that, in inverse tribosystem on materials or for the geometry with controlled heat flow is initiated by the effect of mass transfer. Experimentally established factors and conditions of the intensification of mass transfer, which include: the direction and value of the heat flow, temperature, thermal cycling friction surfaces of copper alloys and high permanent in time the temperature of the steel surface. Such conditions are realized in the construction of the inverse tribosystem with controlled heat flow in the direction of steel triboelement.