Molybdenum disulphide (MoS2 ) in various formulations is the most extensively used lubricant. It possesses excellent anti-galling properties and low friction. In vacuum MoS2 performs even better than in air because there is no oxidation. Also, MoS2 can withstand over 1000°C in vacuum before it sublimes.
Application of MoS2 can be by a number of means;
- a. as a spray-bonded film,
- b. using a polymeric or inorganic carrier,
- c. as a burnished film where the hard-edged platelets are forced into the surface, or
as a sputtered film applied by radio frequency (RF).
The RF sputtering method offers a highly reproducible way of obtaining adherent and thin films.