Abstract
The paper presents the study results of the surface wear of a friction material based on copper, operating under boundary friction. These materials are used for the manufacture of friction discs in hydromechanical transmissions, oil-cooled brakes. It was found that the frame composition of the friction material (tin content in bronze) is defined as the mechanism of material wear, its working conditions, as well as the effectiveness of running-in and the possibility of increasing the load-speed characteristics. The growth of tin content from 6 to 12% contributes to an increase in the strength of the material, while keeping its pore structure, which is an additional source of lubricant in the process of friction interaction.
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