Abstract This paper presents a comparative study of the tribological and vibration performance of the synthesized lithium complex grease (LCG) containing Carbon black, Fe3O4 and Al2O3 nanoparticles on rolling bearing. The micromorphology, friction coefficient, worn surface and bearing vibration experiment of four greases were studied. The results show that in presence of nanoparticles friction and wear behaviors are improved compared to LCG without nanoparticles. The best tribological performance is obtained in presence of Al2O3 nanoparticle, which is mainly attributed to its high hardness, cylindrical shape and deposition on the worn surface. Further, the wettability test shows that Al2O3 nanoparticles can effectively promote the flow of base oil on the LCG soap fibers, which results in the most effective bearing vibration suppression.

中文翻译：

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含纳米颗粒锂复合润滑脂在滚动轴承上的摩擦振动性能研究

摘要 本文对含有炭黑、Fe3O4 和Al2O3 纳米颗粒的合成锂复合润滑脂(LCG) 在滚动轴承上的摩擦学和振动性能进行了比较研究。研究了四种润滑脂的微观形貌、摩擦系数、磨损表面和轴承振动实验。结果表明，与没有纳米粒子的 LCG 相比，存在纳米粒子的摩擦和磨损行为得到改善。在Al2O3纳米颗粒的存在下获得最佳摩擦学性能，这主要归因于其高硬度、圆柱形和在磨损表面的沉积。此外，润湿性测试表明，Al2O3 纳米颗粒可以有效地促进基础油在 LCG 皂纤维上的流动，从而最有效地抑制轴承振动。