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Abstract
An investigation has been made of the effects of sliding-load history on the friction of thin burnished films of MoS2. When friction test specimens were subjected to sliding in high vacuum (10−6 to 10−9 ton) and ultrahigh vacuum (below 10−10 torr), the friction level was substantially reduced after sliding had been accomplished at high loads.
Contact potential measurements of the specimen surface indicated that the effect is associated with surface contamination. Mass spectrometric analyses of the residual gases in the chamber during testing showed some evidence of water and CO2 desorption. Introduction of O2 and CH4 into the chamber produced a slight reduction in friction in a previously run track.
Presented as an American Society of Lubrication Engineers paper at the ASME/ASLE Lubrication Conference held in Cincinnati, Ohio, October 13–15, 1970
Notes
Presented as an American Society of Lubrication Engineers paper at the ASME/ASLE Lubrication Conference held in Cincinnati, Ohio, October 13–15, 1970