Abstract:
Friction and wear loss of various machining parts and pairs depend
majorly on the quality of lubricants. Several types of additives are commercially used
to enhance the tribological performance of a lubricant. In the present work, some
novel lubricating liquids were prepared by mixing diffident additives, viz bromide,
fluoride, iodide and acetate, in a commercial available SAE20W40 lubricant. Pin-ondisc investigations were performed to evaluate the effect of the prepared lubricants
on wear rate and friction characteristics of mild steel and stainless steel sliding pair.
Disc chamber was flooded with lubricants during testing. Fluoride was found to
be the most successful additive to improve the performance of the given lubricant,
whereas acetate as an additive made the base lubricant less efficient. It is believed
that the strong bond stability of C–F bond during working conditions resulted in
better performance of the lubricant after the addition of fluoride
