The Tribological Properties of Superhard and Functional Coatings Based on Carbide and Boron Nitride

Resumo

This study focuses on the tribological properties of superhard and functional coatings on the basis of carbide and boron nitride, which were optionally doped with powdered graphite and molybdenum disulfide. Coatings were obtained by highly concentrated short-pulse laser treatment of powder compositions on metal surfaces. The resulting coatings were subjected to wear tests under conditions of dry sliding friction with friction coefficient fixation, depending on the applied load and the composition of the powder composition. The results provide an idea of the degree of change in the coefficient of friction of coatings from the composition of powder compositions, as well as their alloying. The features of the behavior of boron carbide and nitride at high temperatures and their influence on the coefficient of friction are presented.