▎ 摘　　要

Carbon materials such as diamond, fullerene, graphene, and carbon nanotubes possess superior chemical and physical properties, which are widely used in various applications. Especially, since fullerene-like carbon is successfully converted to graphene during sliding, the sliding-induced microstructure transfer between carbon-based materials should be given more attention. Here, the tribological behaviors of graphene-based materials is investigated under the load of 196 N and the rotational speed of 1450 rpm using a four-ball wear machine under deionized water. Results show that the friction coefficient continuously decreases with increasing sliding time and the wear scar diameter is just about 0.224 mm. Remarkably, graphene is severely ripped and loses its lubrication performance during sliding. Sliding induces graphene quantum dots converting to fullerene quantum dots, which would cooperate with the sliding-reduced fullerene-like structures containing WO2 nanocrystals and sulfurized isobutene as extreme pressure lubricant additives instead of graphene to achieve low friction and wear. This work confirms that the low friction and wear under high load and fast rotation have a close relation to the microstructure transfer of interfacial carbon-based materials, rather graphene, and provide practical approach for investigating the tribological behaviors of carbon-based materials.