Abstract
The tribological properties of combinative addition of nano-MoS2 and nano-SiO2 to the base oil have been investigated with a reciprocating ball-on-plate tribotester for magnesium alloy–steel contacts. The results demonstrate that the optimum mass ratio of nano-SiO2 to nano-MoS2 is 0.25:0.75. The optimum combinative addition into the base oil reduces the friction coefficient by 43.8% and the surface roughness (Sa) by 31.7% when compared to that found with the base oil. Meanwhile, the combinative addition of nano-MoS2 and nano-SiO2, in comparison with single nanoparticles addition, is more pronounced in terms of the lubrication film stability. The excellent tribological properties of the SiO2/MoS2 combinations are attributed to the formation of physical adsorption films and tribochemical products during the rubbing process and the micro-cooperation of various nanoparticles with different shapes and lubrication mechanisms.
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**e, H., Jiang, B., Wang, Q. et al. Effects of combined additions of SiO2 and MoS2 nanoparticles as lubricant additive on the tribological properties of AZ31 magnesium alloy. Sci. China Technol. Sci. 59, 689–698 (2016). https://doi.org/10.1007/s11431-015-5990-1
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DOI: https://doi.org/10.1007/s11431-015-5990-1