Tribological Properties of the Functionalized Graphene/Montmorillonite Nanosheets as a Lubricant Additive

The functionalized graphene/montmorillonite (FG/MTT) nanosheet was synthesized through chemical bonding by a simple, green method, which had remarkable dispersion stability in oil and its lubricating performance evaluated four-ball tribometer. test results showed that FG/MTT preeminent lubricant property when the concentration 0.4 mg/ml. Compared with bare sample, average friction coefficient (FC) wear scar diameter (WSD) decreased 50.4% 13.2%, respectively. synergistic effect between FG MTT further explored comparing mechanism of different additives. After synthetically analyzing worn surface means scanning electron microscopy X-ray photoelectron spectroscopy, lubrication nanocomposite as additive discussed postulated: weak interlayer adhesion filled pairs to avoid contact clinging some asperities, sliding layers played role lubrication. Furthermore, would react pair form repair layer composed Fe2O3, SiC, SiO2, aluminosilicate, mending grinding promoting hardness after friction.