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Nanoscratching of silver () with a diamond tip

2003; Elsevier BV; Volume: 202; Linguagem: Inglês

10.1016/s0168-583x(02)01872-4

1872-9584

D Mulliah, Christopher D. Thompson, S.D. Kenny, Roger Smith,

Advanced Surface Polishing Techniques

Parallel molecular dynamics simulations of nanoindentation followed by nanoscratching were conducted on an fcc silver (1 0 0) surface using a diamond indenter. The simulations were performed using three different orientations of the indenter. For each orientation, simulations were performed for an indentation depth of 5 Å and scratching length of 210 Å. The damage on the substrate is investigated and the coefficient of friction calculated for all the three cases. The results show few sub-surface defects underneath the scratch groove, pile-up around the groove which is orientation dependent and that the friction coefficient varies from ∼0.37 to ∼0.57 depending on the tip orientation.