Abstract
The paper reports a summary of MoS 2 development through years. The properties of MoS 2 coatings can be improved by the co-deposition of small amounts of titanium. These MoS 2/Ti composite coatings known as MoST produced by closed-field unbalanced magnetron sputtering, are harder (1000–2000 compared to 400 HV for MoS 2), much more wear-resistant (by a factor of 100) and also less sensitive to atmospheric water vapour (improvement by a factor of 2800 compared to MoS 2) during tribological testing. They retain a low specific wear rate of 4×10 −17 m 3/N m, a low friction coefficient of 0.02–0.1, and a high load-bearing capacity up to 5 GPa. Alternative MoS 2/material composite coatings have been developed with similar properties. These coatings have given excellent industrial results for a wide range of cutting and forming applications. Recent industrial performance data related to the characteristics of these MoST auto-lubricating coatings, which are utilised today in large-scale production, are presented.
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