Electrochemically exfoliated graphene and molybdenum disulfide nanoplatelets as lubricant additives

In this work, two different 2D materials, molybdenum disulfide nanoplatelets (MSNP) and graphene (GNP), prepared by electrochemical exfoliation, were used as additives to prepare nanolubricants. The tribological behaviour of the nanolubricants was evaluated under configurations (pure sliding rolling/sliding) using tribometers: an Universal Macro Materials Tester (UMT-3) a Mini Traction Machine (MTM2). Wear volume determined, after tests, in confocal microscope (Leica DCM 3D) worn surface analyzed Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS) Raman microscopy. Lubrication mechanisms GNP MSNP dispersed engine oil for improving its antifriction antiwear capabilities are proposed. traction coefficient determination performed at 50% slide-to-roll ratio temperatures. results showed that formulated with both types additives, their lowest concentration, improved friction wear compared neat oil. addition, only nano additive loadings 0.05 0.2 wt% reductions commercial rolling/sliding tests.