A Comparative Tribological Performance of Lubricating Oils with Zinc Dialkyl Dithiophosphate and Zinc Oxide Nanoparticles as Additives

Mana, Anil Payyappalli; Shah, Archit Bimal; Kothari, Karan

doi:10.4271/2019-28-0174

Cited by 1 publication

(1 citation statement)

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“…Similar to CuO, ZnO nanoparticles have been used as additives for improving the tribological behavior in many types of lubricating oils [ 22 , 23 , 24 , 25 , 26 ]. Mana et al [ 22 ] reported that the addition of ZnO nanoparticles in mineral-based oil showed better friction reduction ability than the commonly used anti-wear additives ZDDP. The ZnO nanoparticles combined with diesel oil could improve the thermophysical properties of diesel oil [ 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Tribological Behavior of Ionic Liquid with Nanoparticles

Chern

Horng

2021

Materials

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This research aims to formulate a new lubricant containing oxide nanoparticles for enhancing anti-wear ability and reducing friction. Different concentrations of copper oxide (CuO) and zinc oxide (ZnO) nanoparticles were separately added to an ionic liquid, methyltrioctylammonium bis(trifluoromethylsulfonyl)imide [N1888] [NTf2], to formulate the tested lubricants. The tribological properties of the lubricants were tested by performing ball-on-disc wear tests on a tribotester (MTM, PCS Instruments). The results show that both the CuO and ZnO nanoparticles can increase the friction reduction ability of the ionic liquid when used as a neat lubricant. The anti-wear characteristic of the ionic liquid is increased by adding ZnO nanoparticles but decreased by adding CuO nanoparticles. The best tribological performance observed for the concentration of 0.2 wt% ZnO, with the wear scar diameter is reduced by 32% compared to the pure ionic liquid. The results of SEM/EDX analysis on the worm morphologies show different lubrication mechanisms of the nanoparticles in the [N1888] [NTf2], which are tribo-sintering for CuO nanoparticles, and third body with pure rolling effect for ZnO nanoparticles.

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