"Microscale study of frictional properties of graphene in ultra high va" by Diego MARCHETTO, Tim FESER et al.

Article Title

Microscale study of frictional properties of graphene in ultra high vacuum

Authors

Diego MARCHETTO, Fraunhofer-Institute for Mechanics of Materials, Microtribology Center µTC, Wöhlerstr. 11, 79108 Freiburg, Germany
Tim FESER, Karlsruhe Institute of Technology, Institute for Applied Materials-Computational Materials Science IAM-CMS, Kaiserstr. 12, 76131 Karlsruhe, Germany
Martin DIENWIEBEL, Fraunhofer-Institute for Mechanics of Materials, Microtribology Center µTC, Wöhlerstr. 11, 79108 Freiburg, Germany Karlsruhe Institute of Technology, Institute for Applied Materials-Computational Materials Science IAM-CMS, Kaiserstr. 12, 76131 Karlsruhe, Germany

Keywords

graphene, SiC, friction, vacuum, microtribology, anisotropy

Abstract

We report on the frictional properties of epitaxial graphene on SiC in ultra high vacuum. Measurements have been performed using a microtribometer in the load regime of 0.5 to 1 mN. We observed that a ruby sphere sliding against graphene results in very low friction coefficients ranging from 0.02 to 0.05. The friction and also the stability of the graphene layer is higher than that under similar conditions in ambient conditions. The friction shows a load dependence. Finally it was found that graphene masks the frictional anisotropy which was observed on the SiC surface.

DOI

https://doi.org/10.1007/s40544-015-0080-8

Publisher

Tsinghua University Press

Recommended Citation

Diego MARCHETTO, Tim FESER, Martin DIENWIEBEL. Microscale study of frictional properties of graphene in ultra high vacuum. Friction 2015, 3(2): 161-169.

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