Research Progress of Nano Copper Lubricant Additives on Engineering Tribology

Nanoparticles have as characteristics super sliding, extreme pressure, self-healing, etc., which can improve the friction reduction and anti-wear performance of sliding components, when used lubricating oil additives. Nano-copper particles a good synergistic effect with other antifriction agents, antioxidants grease additives because their low shear strength grain boundary slip effect, showing better anti-friction effect. However, nanoparticles are prone to conglomerate, this causes bottleneck in application dispersant for nano-copper system. The regulation nanosized surface properties has great engineering significance compensating precision manufacturing accuracy. This paper comprehensively reviews tribological research progress lubricant additive, provides reference on tribology.