钛基纳米润滑添加剂的减摩抗磨及自修复特性对比  

Comparison of Friction Reducing Anti-wear and Self-repairing Properties of Different Ti-base Nanometer Lubricating Oil Additives

作　　者：阮亭纲 周桂源[1] 谢先东 刘启跃[1] 

机构地区：[1]西南交通大学摩擦学研究所

出　　处：《中国表面工程》2015年第4期47-53,共7页China Surface Engineering

摘　　要：针对恶劣工作环境会加剧机械设备摩擦副间的磨损而降低其服役寿命的问题,对比研究3种纳米添加剂TiO2、TiN和TiC在不同工况下的摩擦学性能及其自修复性能。根据SH-T0762-2005标准润滑油摩擦因数测定法,并利用MRS-10A型四球磨损试验机磨斑测量光镜、激光共聚焦显微镜和能量色散谱仪(EDS)对磨损表面进行表征,探讨其润滑抗磨及自修复机理。结果表明:钛基纳米添加剂的加入很好地改善了润滑油的抗磨减磨性能,并使其具有一定的自修复性能;当钛基纳米质量分数为0.5%时,其减摩抗磨性能达到最佳。3种纳米添加剂中,对润滑油减摩抗磨性能改善效果最好的是纳米TiO2,而自修复效果最好的则为纳米TiN。故纳米TiN和纳米TiO2作为润滑油添加剂,具有较好的减摩抗磨和自修复能力。Poor working environment worsens the wear of mechanical equipment friction pair, thereby reducing its service life. The tribological behaviors and self- repairing mechanism of different nanometer lubricating oil additives TiO2, TiN and TiC were comparatively investigated in different working conditions. Based on the SH-T0762-2005 test method for determination of the frictional coefficient of lubricants, the lubrication anti-wear and self-repairing mechanism were analyzed by the four-ball test machine（MRS-10A） grinding spot measurement system, laser scanning confocal microseopy（OLS1100） and energy spectrum analysis（EDS）. The results show that the anti-wear and friction reducing character- istics of lubricating oil with Ti-base nanometer additives are better than those of base oil, and they have a certain self-repairing performance. Meanwhile, the friction reducing anti-wear characteristics reach the best when the mass fraction of the Ti-base nanometer additive is 0.5 %. The friction reducing anti-wear characteristics and the self-repairing perform- ances of the three nanometer additives are different, while the nanometer additive TiO2 has the best anti-friction and anti -wear characteristics and the nanometer additive TiN has the best self-repairing performance. Therefore, the nanometer TiN and nanometer TiO2 as lubricating oil additives have better friction reducing anti-wear and self-repairing ability.

关 键 词：减摩抗磨 润滑油 纳米添加剂 自修复 

分 类 号：TH117.3[机械工程—机械设计及理论]