Friction between Iron and Partially Frozen Graphite Nanoparticles

This study uses the molecular dynamics simulations to investigate the friction between the iron plate sliding against the partially frozen graphite nanoparticle. The graphite nanoparticle is divided into the two parts along the normal direction: the part contacts to the iron plate is controlled temperature and the lower other is held in the frozen situation. We detect the friction dependent on the frozen height, the angle between the sliding direction and the graphene surfaces by rotating the graphite nanoparticle around the normal direction, the external load and the sliding speed. The friction is low in all the investigated cases, the friction coefficients ~ 0.004 to 0.066. The sliding speed slightly results in the friction, while the other factors significantly influence it.