Influence of Temperature on the Wear Behavior of Molybdenum Disulphide Films

The space environment, with high vacuum conditions (1 x 10(-6) Torr) and a wide thermal range (T>200 degrees C or T<0 degrees C), is one of the most difficult tribological environments to operate in. These conditions have led to the use of thin solid films to prevent seizure of many joints which include highly loaded restraints and hinges. Molybdenum disulphide (MoS) based films are commonly used, but the tribological performance of these MoS, films under space relevant conditions remains largely uncharacterized. This study examines the influence of temperature on the wear rate and debris size of a commercially available MoS, film in high-vacuum environments.