This paper reported the tribological behaviours of Cu nanoparticles as lubricant additives. Cu nanoparticles were prepared by an innovative technology called mass-produced nanoparticles (MPNP). A SRV-IV friction and wear tester was used to investigate the influence of load on the tribological performance of 0.1 ~ 2 wt% Cu nanoparticles. The results indicated adding 0.1 wt% Cu nanoparticles into PAO6 base oil and 10 W/40 CH-4 commercial lubricant, reduce the average friction coefficient by 38% and 3%, and decrease the wear rate by 96% and 66% under 300 N, respectively, compared to the lubricants without nanoparticles. The excellent antiwear and antifriction effect could be attributed to the rolling effect caused by the ideal spherical shape and good dispersibility of the prepared Cu nanoparticles and form deposition film on the surface of the friction pair. Therefore, the Cu nanoparticles prepared by MPNP show excellent tribological performance and possess broad prospects in the fields of lubricant additives.

中文翻译：

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大量生产的铜纳米粒子作为润滑剂添加剂，用于减少摩擦和磨损

本文报道了铜纳米颗粒作为润滑剂添加剂的摩擦学行为。铜纳米粒子是通过一种称为大规模生产纳米粒子 (MPNP) 的创新技术制备的。使用 SRV-IV 摩擦磨损试验机研究负载对 0.1 ~ 2 wt% Cu 纳米粒子摩擦学性能的影响。结果表明，在 PAO6 基础油和 10 W/40 CH-4 商用润滑油中添加 0.1 wt% Cu 纳米粒子，在 300 N 下，平均摩擦系数降低了 38% 和 3%，磨损率降低了 96% 和 66%。 ，分别与不含纳米颗粒的润滑剂相比。优异的抗磨减摩效果可归因于所制备的Cu纳米粒子理想的球形和良好的分散性所产生的滚动效应，并在摩擦副表面形成沉积膜。因此，MPNP制备的Cu纳米颗粒表现出优异的摩擦学性能，在润滑油添加剂领域具有广阔的前景。