Mini Review on the Significance Nano-Lubricants in Boundary Lubrication Regime

Abstract

This article briefly reviews the significance nano-lubricants and assesses their effectiveness to provide the most promising approaches to reduce the friction and anti-wear/scuffing over the boundary regime. The main purpose of this review is to summarize the present knowledge about major advantages of the nanomaterials as nanolubricant additives in boundary lubrication. It is very complex regime involving surface topography, metallurgy, physical adsorption and chemical reactions. There is no intent to present an exhaustive survey of the literature, but it presents the main reasons for decreasing the friction and wear based on lubricated by nanolubricants during heavy load and low-speed conditions.

A Tribochemical Boost for Cu Based Lubricant Nano-Additive

“…Among various species, copper nanoparticles (NPs) are one of the most effective in reducing both wear and friction [9,10]. As stated before [11], nano-additives show their effectiveness especially in boundary regime, where the distance between the surfaces is comparable with NPs size, ensuring promising performances at low weight loading. Intense research has been made in order to give further insights into the mechanisms involved; the most accredited ones are ball bearing, mending, polishing, and protective film formation [12,13].…”