Kubich V. Increasing the durability of tribounit crankshaft of the internal combustion engine by frictional formation of the coating in gallium-indium environment

The thesis is devoted to the development of surface-active medium for the formation of the original copper-containing coating on the surface of the crankshaft necks, which can form secondary structures in the contact layers of material elements of the friction couples, to increase its wear resistance. The studies focus on identifying manifestations of the properties proposed gallium-indium environment. It is the evaluated influence on the tribological condition of the contact layers, depending on the components content. It was estab-lished experimentally that the best tribological characteristics of friction couples of ele-ments are caused by the use of complex materials consisting of: tin bronze BrOF4-0,25, gallium-indium environment % (at.); namely gallium - 81, indium - 19. Research has es-tablished that the contact interaction between elements in of the secondary structures under the of oil starvation, causes the formation of surface layers of the original coating on the neck, in the antifriction layer of the liner, as well as in the zone of their interaction in the form of "isolated composition". Thus, the structure was determined and the tribological characteristic of the secondary structures was given which improve tribological properties of crankshafts of internal combustion engines.