二硫化钼和二氧化硅纳米颗粒作为镁合金-钢接触润滑添加剂的协同效应
Synergistic Effect of MoS₂ and SiO₂ Nanoparticles as Lubricant Additives for Magnesium Alloy-Steel Contacts.
作者信息
Xie Hongmei, Jiang Bin, Hu Xingyu, Peng Cheng, Guo Hongli, Pan Fusheng
机构信息
College of Mechanical and Electrical Engineering, Yangtze Normal University, Chongqing 408100, China.
College of Materials Science and Engineering, National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China.
出版信息
Nanomaterials (Basel). 2017 Jun 23;7(7):154. doi: 10.3390/nano7070154.
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.
通过往复式球-平面摩擦磨损试验机对AZ31镁合金/AISI 52100轴承钢副进行试验，探究了SiO₂/MoS₂杂化物作为润滑添加剂的摩擦学性能。结果表明，将SiO₂/MoS₂杂化物添加到基础油中，摩擦系数和磨损体积显著降低，承载能力提高，这优于SiO₂或MoS₂纳米润滑剂的测试结果。具体而言，与1.0 wt%的MoS₂纳米润滑剂相比，向基础油中添加0.1 wt%的纳米SiO₂与1.0 wt%的纳米MoS₂，摩擦系数降低了21.8%，磨损体积降低了8.6%。SiO₂/MoS₂杂化纳米润滑剂优异的润滑性能可通过不同形貌和润滑机制的纳米颗粒之间的微观协同作用来解释。
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