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  • Title: Synergistic Effect of MoS₂ and SiO₂ Nanoparticles as Lubricant Additives for Magnesium Alloy-Steel Contacts.
    Author: Xie H, Jiang B, Hu X, Peng C, Guo H, Pan F.
    Journal: Nanomaterials (Basel); 2017 Jun 23; 7(7):. PubMed ID: 28644394.
    Abstract:
    The tribological performances of the SiO₂/MoS₂ hybrids as lubricant additives were explored by a reciprocating ball-on-flat tribometer for AZ31 magnesium alloy/AISI 52100 bearing steel pairs. The results demonstrated that the introduction of SiO₂/MoS₂ hybrids into the base oil exhibited a significant reduction in the friction coefficient and wear volume as well as an increase in load bearing capacity, which was better than the testing results of the SiO₂ or MoS₂ nanolubricants. Specifically, the addition of 0.1 wt % nano-SiO₂ mixed with 1.0 wt % nano-MoS₂ into the base oil reduced the friction coefficient by 21.8% and the wear volume by 8.6% compared to the 1.0 wt % MoS₂ nanolubricants. The excellent lubrication behaviors of the SiO₂/MoS₂ hybrid nanolubricants can be explained by the micro-cooperation of different nanoparticles with disparate morphology and lubrication mechanisms.
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