Moringa oil with pristine and fluorinated carbon nanofibers as additives for lubrication

This paper focuses on the influence of local moringa oil on the performances of lubricants formed from blend of dodecane and pristine or fluorinated carbon nanofibers at ambient temperature. The friction experiments have been evaluated using a reciprocating ball on plane tribometer. Moringa oil is designed to be used as a bio-additives in lubricant formulations. First, the addition of small amounts of moringa oil in dodecance allowed a reduction about 50% of the base oil friction performances. In a second part, a comparative study investigates the friction properties of their blends with pristine carbon nanofibers (CNFs) and fluorinated ones (CF0.85) which are intended to be used as solid lubricant additives. An adsorption effect of fatty acid molecules is showed with CNFs particles unlike CF0.85. Whatever was the percentage of moringa oil added, the more promising results were obtained with CF0.85. Physicochemical characterizations of the tribofilms evidence the good antiwear properties of the lubricants.

Enhancing the tribological and mechanical properties of M50 steel using solid lubricants – A detailed review

Recent strides in contact mechanics of M50 steel offer unique opportunities for better and more control of its tribological behavior and mechanical properties under different contact and surrounding conditions. Most researchers have focused on the solid lubricants on M50 steel as the key strategy for improving the tribological properties. In this paper, we have selected a wide range of previous late studies to discuss the different mechanisms leading to an improvement in the tribological properties of M50 steel via solid lubricants. A discussion of M50 steel industrial applications is also reviewed. The main objective is to develop an exhaustive understanding of the tribological behavior of M50 steel with solid lubricant additives under different conditions and also provide some prospects to be considered for future work.