Tribology Letters

, Volume 46, Issue 2, pp 167–178

Nanoscale Friction Behavior of the Ni-Film/Substrate System Under Scratching Using MD Simulation

Original Paper

DOI: 10.1007/s11249-012-9932-9

Cite this article as:
Liu, X.M., Liu, Z.L. & Wei, Y.G. Tribol Lett (2012) 46: 167. doi:10.1007/s11249-012-9932-9

Abstract

The friction behavior of the nanoscratching process is investigated using molecular dynamic simulations by considering a sphere indenter sliding against a nickel nanofilm structure. In the film/substrate system, the interface-dominated friction process is studied during the nanoscratch process. The results indicate that the interface accommodates deformation during the scratch by absorbing plastic deformation (such as stacking faults and partial dislocations) and by allowing locally interface slip. The observed local material shuffling beneath the tip that was strongly affected by the interface and friction mechanisms, including material ploughing along the track, filling in of the track, and piling up of the chip in front of the tip, are discussed. The combination effects of both scratching depths and film thicknesses were also investigated.

Keywords

Nanotribology Friction-reducing Friction mechanisms Films Dynamic modeling 

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  1. 1.LNM, Institute of Mechanics Chinese Academy of SciencesBeijingChina
  2. 2.Department of Mechanical EngineeringNorthwestern UniversityEvanstonUSA