Abstract
The structural state and mechanical characteristics of titanium-based composites and secondary lubricating films synthesized on their surface during dry friction are studied. It is found that secondary lubricating films with microheterogeneous and nanocrystalline (grain size <100 nm) structure are synthesized on the materials whose friction coefficient varies between 0.3–0.36 and wear between 1.91–68.3 mg/km at a high slip velocity (15 m/sec) and low pressure (0.8 MPa). These films determine the antifriction properties and performance of the materials. The mechanical characteristics of secondary lubricating films are higher than those of the composites. The antifriction properties can be evaluated from the ratio of the mechanical characteristics of the secondary lubricating films and the starting material: the smaller the ratio, the higher the antifriction properties of the composite.
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