▎ 摘　　要

Epoxy-graphene composites are prepared with varying graphene concentration of 1 wt%, 3 wt%, and 5 wt%. Composite fabrication involves continuous stirring of the mixture consisting graphene and epoxy resin followed by curing first at room temperature and subsequently at 100 degrees C. In the epoxy-graphene composites, compressive stresses show increasing trend with filler concentration. A correlation between surface roughness and wetting is established to explain the Wenzel's contact model. Friction and wear behavior is evaluated under dry/lubricated contact. The average friction-coefficient values of 5 wt% epoxy-graphene composites range between 0.02 and 0.18, and 0.01-0.09 for dry and lubricated contact, respectively. Wear rate under dry and lubricated contact ranges between 0.95 and 3.15x10(-7) and 0.67-2.21x10(-7) mm(3)/N-m, respectively. Minimum dissipation energy of 5.1x10(2) N-m is obtained for 5 wt% epoxy-graphene composites. Functionalization of graphene and tribofilm formation lead to excellent properties in the prepared composites, and they are suitable for light-weight automotive application.