Moringa oil with graphite and hexagonal boron nitride particles as additives for lubrication

Abstract

Tribological behaviour of bio-lubricants is constantly evolving to be improved. Vegetable and synthetic oils owing the increasing interest of the environmental impact constitute a suitable alternative for lubrication. The addition of particles as additive show a great potential to improve the tribological properties of bio-lubricants. This paper overviewed the effect of graphite and hexagonal boron nitride (hBN) particles as additives on the tribological properties of different lubricating base oils such as mineral oil (dodecane), vegetable oil (moringa oil) and vegetable/dodecane blends. The addition of particles (0.5 and 1 w%) has indicated an improvement of the mineral base oil. At the addition of small amounts of moringa oil (MO), a reduction of about 55% of friction and wear performances of dodecane. We showed that the more promising results were obtained for the blend containing 3 w% of MO with hBN particles. These new formulations lubricant represent an excellent alternation for lubrication environmentally friendly.