Investigation of Tribological Properties of Cu Nanoparticle as Lubricating Oil Additive

Cu nanoparticles with average diameter of 20 nm have been successfully prepared by chemically reduction in solution. The Cu nanoparticles have the same structure as bulk Cu and its tribological properties as additives in oil have been evaluated with a T-11 tester. The results show that Cu nanoparticles exhibit good performance in anti-wear and friction reduction.