The Efficiency of Tribocoupling with МоS2-Based Solid Lubricant Coatings Using Magnetron and Suspension Sputtering

An analysis of studies conducted under vacuum conditions revealed that MoS2-based solid lubricant coatings applied to a titanium base using magnetron sputtering was virtually unusable. It was established that satisfactory working capacity of the considered couplings could be achieved by preliminary treatment of the base, that is by galvanic chrome plating and nickel plating. It was shown that life of a coupling with solid lubricant coatings sputtered using the magnetron method on a ceramic base was higher than those sputtered on a metal base. However, starting from the middle of operational life, temporary “surges” in the coefficient of friction occurred and subsequently stabilized. The life of coatings sputtered using the magnetron method was 2.51 times lower than that of a coupling with coatings of the BNII NP 212 type obtained using the suspension method, and 3.65 times lower than that of similar types by foreign manufacturers. The coefficient of friction for the considered couplings under vacuum conditions varied from 0.02 to 0.07.

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