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Assessment of Sliding Friction of a Nanostructured Solid Lubricant Film by Numerical Simulation with the Method of Movable Cellular Automata (MCA)

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Abstract

Tribofilms formed during dry sliding usually exhibit a nanocrystalline structure and complicated composition. In the present study, tribofilms consisting mainly of a solid lubricant, namely graphite nanoparticles, are considered. Systems providing such tribofilms are candidates for anti-friction applications. Since sliding action always leads to mixing of the materials at both sides of the tribological interface, it was of major interest to study the impact of different amounts of a hard constituent, SiC in the considered case, within the soft matrix systematically. Furthermore, the impact of normal pressure was considered. A mechanically mixed layer was observed for the whole range of normal pressures and SiC volume fractions. The calculated coefficient of friction decreased significantly with increasing thickness of this layer but was only marginally affected by SiC volume fraction, which is good news for anti-friction applications.

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Acknowledgments

This work was funded by the German Research Foundation (DFG), Contract No. OS77/19-1 and supported by the Russian Academy of Science (SB RAS), Program No. III.23.2.4.

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Authors and Affiliations

  1. Federal Institute for Materials Research and Testing, Unter den Eichen 87, 12205, Berlin, Germany

    Werner Österle & Heinz Kloß

  2. Institute of Strength Physics and Materials Science SB RAS, Akademicheskii 2/4, 634021, Tomsk, Russia

    Andrey I. Dmitriev

Authors
  1. Werner Österle
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  2. Andrey I. Dmitriev
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  3. Heinz Kloß
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Correspondence to Werner Österle.

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Österle, W., Dmitriev, A.I. & Kloß, H. Assessment of Sliding Friction of a Nanostructured Solid Lubricant Film by Numerical Simulation with the Method of Movable Cellular Automata (MCA). Tribol Lett 54, 257–262 (2014). https://doi.org/10.1007/s11249-013-0287-7

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  • DOI: https://doi.org/10.1007/s11249-013-0287-7

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