纳米二氧化锆添加剂对润滑脂摩擦学性能影响的研究  

Study on the Effect of Nano Zirconia Additive on the Tribological Properties of Lubricating Grease

作　　者：贾其苏 许世鹏 赵杰鸽 JIA Qi-su;XU Shi-peng;ZHAO Jie-ge(CITIC Heavy Machinery Co.,Ltd.,Luoyang 471003,China;School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China)

机构地区：[1]中信重工机械股份有限公司,河南洛阳471003 [2]河南科技大学机电工程学院,河南洛阳471003

出　　处：《材料保护》2021年第2期13-20,54,共9页Materials Protection

基　　金：国家自然科学青年基金项目(51105002)资助。

摘　　要：为研究纳米二氧化锆作为添加剂对润滑脂摩擦性能的影响,制备了不同比例纳米二氧化锆的润滑脂,采用四球摩擦试验机以及高温往复式摩擦磨损试验机研究了纳米二氧化锆对润滑脂摩擦学性能的影响。利用激光粒度分析仪、粉末X射线衍射仪、傅立叶变换红外光谱仪对纳米二氧化锆进行表征,利用金相显微镜、三维形貌仪对磨损表面的三维形貌进行了表征。结果表明:添加纳米二氧化锆可以优化润滑脂性能,其最佳的添加比例为0.3%,最优的工作温度为50℃,平均摩擦系数比原始脂低16.87%,钢球磨斑直径较原始脂相比低11.48%,钢球的质量损失与原始脂质量低74.72%,钢球的磨斑平均高度比原始值低33.16%。Aiming at studying the effect of nano zirconia as additive on the tribological properties of lubricating grease,the lubricating grease with different proportion of nano zirconia was prepared. The influence of nano zirconia on the tribological properties of lubricating grease was studied by four ball friction tester and high-temperature reciprocating friction and wear tester. Furthermore,the Nano-ZrO2 was characterized by laser particle analyzer,powder X-ray diffractometer and Fourier transform infrared spectrometer. The 3D profiles of worn surfaces were characterized by metallographic microscope and three-dimensional topography instrument. Results showed that the performance of the grease can be optimized by adding nano zirconia,the optimal adding ratio was 0.3%,and the optimal working temperature was 50 ℃. In the comparison of the original grease,the average friction coefficient decreased by 16.87%,the diameter of grinding spot of steel ball declined by 11.48%,the mass loss of steel ball was reduced by 74.72%,and the average height of grinding spot of steel ball declined by 33.16%.

关 键 词：润滑脂 纳米二氧化锆 摩擦系数 四球试验 高温往复 摩擦磨损试验 

分 类 号：TH117.22[机械工程—机械设计及理论]