铜和二氧化锆纳米微粒添加剂对锂基脂摩擦学性能的影响  

Effect of Cu and ZrO_2 Nanoparticle Additive on Tribological Property of Lithium Grease

作　　者：夏新涛[1] 张永振[1] 陈士超[1] 张林[1] 

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003

出　　处：《轴承》2010年第6期41-44,共4页Bearing

基　　金：江苏省工业装备数字制造及控制技术重点实验室开放研究基金资助项目(DM2009003);郑州铁路局科研基金项目(200419);河南科技大学博士科研启动基金资助项目(09001318);河南省教育厅自然科学研究计划项目(2010B460008)

摘　　要：选取纳米微粒Cu和ZrO2作为Ⅳ型锂基脂添加剂进行摩擦磨损试验,以探讨Ⅳ型锂基脂的摩擦学性能。研究发现:纳米微粒Cu作为Ⅳ型锂基脂添加剂会增大摩擦系数;纳米微粒ZrO2作为Ⅳ型锂基脂添加剂在质量分数为0.25%和0.5%时可以使摩擦系数减少30%以上;纳米微粒Cu和ZrO2作为添加剂都具有抗磨作用,尤其是ω(Cu)=0.5%,ω(ZrO2)=0.25%和0.5%时达到最佳效果,磨斑直径分别可以减小37.2%,48.8%和46.5%。By choosing Cu and ZrO2 nanoparticles as the additive in the IV-type lithium grease,the test of friction and wear is done to discuss the change of the tribological properties of the lithium grease.It is found that as the additive in the lithium grease,Cu nanoparticles can increase the friction factor,that ZrO2 nanoparticles with the mass fraction of 0.25% or 0.5% are able to decrease the friction factor by 30% or more,that Cu nanoparticles and ZrO2 nanoparticles have the anti-wear effect,and that with the mass fraction of 0.5% Cu,0.25% ZrO2,and 0.5% ZrO2,wear scar diameter can be decreased by 37.2%,48.8% and 46.5%,respectively.

关 键 词：锂基脂 纳米微粒 添加剂 摩擦系数 磨斑直径 

分 类 号：TH133.33[机械工程—机械制造及自动化] TH117.22