  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.
