Design and Study of Molybdenum Sulfide Nanoparticles Based on Multicomponent Chemistry Using Phosphorous and Boron Components

摘要

The hybrid chemo-mechanical milling process of molybdenum sulfide with second component based on phosphorous and boron elements was used as a synthetic approach to prepare multicomponent nanoparticle additives. Their addition to base oil could provide advanced lubrication by: (1) supplying nanosized lubricating agents which reduce friction and wear at the asperities contact zone, (2) enabling strong tendency to adsorb on the surfaces, (3) reacting with the surface, so that lubricating tribofilms are formed, which offer ability to sustain high loads and distribute the load locally as well as respond and sustain under high temperatures, and (4) enabling all these at minimal cost and less environmental impact. The structural properties of novel additives were characterized using TEM, EDX, and particle size analysis. The tribological behaviors were compared using Four Ball and Block on Ring tests. The formed tribofilms were studied using XPS, Auger, TOF SIMS, and FIB techniques.