碳黑对MoS2纳米润滑油的摩擦磨损性能影响
侯献军1,2,3，熊纳1,2,3，王友恒1,2,3
（1.武汉理工大学 现代汽车零部件技术湖北省重点试验室，湖北 武汉 430070；2.武汉理工大学 汽车零部件技术湖北省协同创新中心，湖北 武汉 430070；3.武汉理工大学 湖北省新能源与智能网联车工程技术中心，湖北 武汉 430070）
摘要：以PAO6润滑油为基础油，MoS2为纳米添加剂，制备质量分数为0.02%的纳米润滑油。通过自主研制的缸套-活塞环摩擦实验台，对添加不同浓度碳黑颗粒的MoS2纳米添纳米润滑油的摩擦学性能进行研究；通过电子扫描显微镜（SEM）对缸套表面磨痕进行观察。结果表明，低浓度的碳黑（0.01wt%和0.1wt%）可以进一步改善纳米润滑油的摩擦系数（降低7.7%和1.5%）；任何浓度的碳黑都会导致纳米润滑油的抗磨性能恶化，甚至比未添加任何纳米颗粒的基础油的磨损量高约5～7倍；缸套的磨痕分析表明，碳黑通过破坏MoS2纳米润滑油在摩擦副表面形成抗磨损膜的稳定性，加剧零件磨损。
关键词：纳米润滑油；碳黑；摩擦；磨损
中图分类号：TG115.5+8 文献标志码：A doi：10.3969/j.issn. 1006-0316.2021.06.001
文章编号：1006-0316 (2021) 06-0001-07
Effect of Carbon Black on Friction and Wear Performances of MoS2 Nano-Lubricating Oil
HOU Xianjun1,2,3，XIONG Na1,2,3，WANG Youheng1,2,3
( 1.Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan 430070, China; 2.Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan University of Technology, Wuhan 430070, China; 3.Hubei Research Center for New Energy & Intelligent Connected Vehicle, Wuhan University of Technology, Wuhan 430070, China )
Abstract：Taking PAO6 lubricating oil as the base oil and MoS2 as the nano additive, nano lubricating oil with a mass fraction of 0.02% was prepared. Through the independently developed test bench for friction between cylinder liner and piston ring, the tribological performance of the MoS2 nano-lubricating oil was studied by adding different concentrations of carbon black particles to it. The wear marks on the cylinder liner surface were observed through the scanning electron microscope (SEM). The results show that low concentrations of carbon black (0.01wt% and 0.1wt%) can further improve the friction coefficient of nano-lubricating oil (decreased by 7.7% and 1.5%). Any concentration of carbon black will cause the deterioration of the anti-wear performance of nano-lubricating oil, and the wear amount is even about five to seven times higher than that of the base oil without adding any nano particles. The analysis of the wear scar of the cylinder liner shows that the carbon black can aggravate the wear of the parts by destroying the stability of the MoS2 nano-lubricant forming an anti-wear film on the surface of the friction pair.
Key words：nano-lubricating oil；carbon black；friction；wear
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收稿日期：2021-03-15
基金项目：国家自然科学基金（51875423）
作者简介：侯献军（1973－），男，河南新乡人，博士，教授，博士生导师，主要研究方向为节能与新能源汽车、汽车及其动力系统CAD/CAE/NVH 和汽车纳米材料技术，E-mail：houxj@whut.edu.cn。
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