摘要

Molecular dynamics simulation was employed to investigate the atomic scale frictional behaviors of diamond films under various sliding conditions with different normal loads, sliding velocities and temperatures, where the (100) surface of a face-centered-cubic (FCC) Cu lattice was brought to slide against the (111) surface of a diamond lattice. The interaction between pair atoms were derived from Morse potential and the motion equations of atoms were integrated using the velocity Verlet algorithm. The simulations revealed significant dependence of the atomic-scale friction force of diamond film on sliding parameters; furthermore, the mechanism of such dependences was discussed from the viewpoint of atomic motion.