二氧化硅/二硫化钼混合纳米流体用于镁合金-钢接触的摩擦学性能研究
An Investigation on the Tribological Performances of the SiO2/MoS2 Hybrid Nanofluids for Magnesium Alloy-Steel Contacts.
作者信息
Xie Hongmei, Jiang Bin, Liu Bo, Wang Qinghang, Xu Junyao, Pan Fusheng
机构信息
State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, China.
College of Mechanical and Electrical Engineering, Yangtze Normal University, Chongqing, 408100, China.
出版信息
Nanoscale Res Lett. 2016 Dec;11(1):329. doi: 10.1186/s11671-016-1546-y. Epub 2016 Jul 15.
Hybrid nano-materials offer potential scope for an increasing numerous novel applications when engineered to deliver availably functional properties. In the present study, the SiO2/MoS2 hybrid nanoparticles with different mass ratios were employed as lubricant additives in the base oil, and their tribological properties were evaluated using a reciprocating ball-on-plate tribometer for magnesium alloy-steel contacts. The results demonstrate that the SiO2/MoS2 hybrid nanoparticles exhibit superior lubrication performances than individual nano-SiO2 or nano-MoS2 even in high load and diverse velocity cases. The optimal SiO2/MoS2 mixing ratio and the concentration of SiO2/MoS2 hybrid nanoparticles in the base oil are 0.25:0.75 and 1.00-1.25 wt%, respectively. The excellent lubrication properties of the SiO2/MoS2 hybrid nanoparticles are attributed to the physical synergistic lubricating actions of nano-SiO2 and nano-MoS2 during the rubbing process.
当设计成具有可用功能特性时，混合纳米材料为越来越多的新型应用提供了潜在的空间。在本研究中，将不同质量比的SiO2/MoS2混合纳米颗粒用作基础油中的润滑剂添加剂，并使用往复式球-盘摩擦磨损试验机对镁合金-钢接触副的摩擦学性能进行了评估。结果表明，即使在高负荷和不同速度的情况下，SiO2/MoS2混合纳米颗粒也比单独的纳米SiO2或纳米MoS2表现出更优异的润滑性能。基础油中SiO2/MoS2的最佳混合比例和SiO2/MoS2混合纳米颗粒的浓度分别为0.25:0.75和1.00-1.25 wt%。SiO2/MoS2混合纳米颗粒优异的润滑性能归因于纳米SiO2和纳米MoS2在摩擦过程中的物理协同润滑作用。
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