Study on Antiwear and Repairing Performances about Mass of Nano-copper Lubricating Additives to 45 Steel

Metal-containing nanomaterials as lubricant additives: State-of-the-art and future development

“…As an additive for lubricants, nanoplates are responsible for the formation of a film deposit at the interface of a friction pair and a 12% drop in COF of the lubricant and an 82.2% drop in wear loss. Cu NPs surface-capped by dioctylamine dithiocarbamate [83] or alkanethiols [84] were used as an additive in liquid paraffin. They have excellent anti-wear and friction-reduction properties owing to the deposition of Cu NPs, with a low melting point on the worn steel surface, which results in the formation of a self-repairing protective layer on it.…”

Tribological properties of protic ionic liquid and functionalized copper oxide nanoparticles as additives to base oil

“…The results show that the friction coefficients were reduced by adding copper oxide nanoparticles or protic IL to base oil, which is in good agreement with wear scar data. In literature it has been shown that nano-copper forms a protective layer on steel surface, by diffusing and permeating during rubbing [10]. The physical adsorption and tribochemistry reaction can take place when the steel balls are rubbing, so the contact temperature is raised and the copper oxide surface metal is softened or melted.…”

“…Copper nanoparticles have a wide variety of uses, one of which is the use as an additive in lubricant oils, because they have perfect tribology performances especially in reducing friction and enhancing wear-resisting properties [9,10,11]. Nanoparticles are said to enhance lubrication because they decrease the surface roughness [9], melt on contact faces and create a protective layer [10] or act as ball-bearings [11]. Although there are studies that outline the positive effect of copper nanoparticles on lubrication, little information is found on synthesizing particles that would be suitable for this specific use.…”

Tribological performance of freeze-drying nano-copper particle as additive of paroline oil

“…In recent years, nano-copper particles have demonstrated excellent prospects in tribology which have been widely discussed for their unique physical and chemical properties, excellent extreme pressure characteristics, repair surface micro-damage and prolonged operation time of mechanical parts [1][2][3][4]. A large amount of data proves that nano-copper can be used as a lubricating oil additive to improve anti-wear and bear capacity of lubricating oil and it can substitute some noble metal particles into high quality lubricating oil.…”