Abstract

Physicochemical processes taking place in the surface layers of titanium alloys were studied. For vacuum conditions, a range of external parameters was proved to exist where the alloys have high wear resistance and a low coefficient of friction. The transition from seizure, with tearing of the material at a large depth, to fatigue wear is related to surface hardening due to α / ag β transitions under friction. Thermodynamic parameters were calculated and the criteria of protective secondary structure formation defined.

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