Low Friction at the Nanoscale of Hydrogenated Fullerene-Like Carbon Films

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ID: 114645
2020
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Abstract
Friction force microscopy experiments at the nanometer scale are applied to study low friction of hydrogenated fullerene-like carbon films. The measured friction coefficients indicate that lower hydrogen concentration during preparation is beneficial to enter the low friction regime, especially in combination with only methane as precursor. Furthermore, two regions are found with distinct friction coefficients and surface roughnesses related to different surface structures. One is rich in amorphous carbon and the other is rich in fullerene-like carbon, dispersed on the same surface. Transmission electron microscopy and Raman spectroscopy images verify this observation of the two separated structures, especially with the extracted fullerene-like structures in the wear debris from macro friction experiments. It is speculated that hydrogen may tend to impair the growth of fullerene-like carbon and is therefore detrimental for lubricity.
Reference Key
liu2020coatingslow Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Zhao Liu;Yongfu Wang;Thilo Glatzel;Antoine Hinaut;Junyan Zhang;Ernst Meyer;Liu, Zhao;Wang, Yongfu;Glatzel, Thilo;Hinaut, Antoine;Zhang, Junyan;Meyer, Ernst;
Journal coatings
Year 2020
DOI
10.3390/coatings10070643
URL
https://doi.org/10.3390/coatings10070643
Keywords
friction fullerene-like carbon films hydrogen concentration

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