Contact and Friction at Nanoscale
Molecular Dynamics (MD) simulations of indentation and scratch over crystal nickel (100) were carried out to investigate the microstructure evolution at nanoscale. The dislocation nucleation and propagation during process were observed preferably between close-packed planes. Dislocation loops are formed under both indentation and scratch process, and indentation and friction energy were transferred to the substrate in the form of phonon of disordered atoms, then part of the energy dissipated and rest is remain in the form of permanent plastic deformation.
Wei Yang, Mamtimin Geni, Tiejun Wang and Zhuo Zhuang
X.M. Liu et al., "Contact and Friction at Nanoscale", Advanced Materials Research, Vols. 33-37, pp. 999-1004, 2008