The tribological behaviour of diamond-like carbon (DLC) and graphene nanoplatelets (GNP) nanocomposite has not been previously explored in a lubricated environment, with some previous studies reporting only on materials the surface DLC. In this study DLC-GNP films various GNP coverages were synthesised by 3 step process: spin coating suspension, heat treatment, DLC deposition. study, effect cov...