Molecular-Dynamic Study the Influence of Size Parameter and Temperature of the System on Adhesive Wear Mechanisms

AI Dmitriev and AY Nikonov, PROCEEDINGS OF THE ADVANCED MATERIALS WITH HIERARCHICAL STRUCTURE FOR NEW TECHNOLOGIES AND RELIABLE STRUCTURES, 2051, 020063 (2018).

DOI: 10.1063/1.5083306

Molecular Dynamics using a classical Tersoff's potential was applied for simulating the sliding within a thin film corresponding to a tribofilm formed from silica nanoparticles. In calculations, the initial temperature and the spatial size of the simulated crystallite were varied. Based on the experimental observation the temperature variation can be associated with different tribological stressing conditions in the contact area. The results show the change in sliding behavior of silica-based tribofilm depending on the temperature and size parameter. Thus increasing the temperature provides smooth sliding while at moderate conditions wear process can occur via debris formation. Results of our simulation can be used to explain the low-frictional characteristics of polymer based composites with silica and carbon nanoparticles.

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