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

Liu, Zhao and Wang, Yongfu and Glatzel, Thilo and Hinaut, Antoine and Zhang, Junyan and Meyer, Ernst. (2020) Low Friction at the Nanoscale of Hydrogenated Fullerene-Like Carbon Films. Coatings, 10 (7). p. 643.

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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.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer)
UniBasel Contributors:Glatzel, Thilo
Item Type:Article, refereed
Article Subtype:Research Article
ISSN:2079-6412
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
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Last Modified:29 Apr 2021 12:53
Deposited On:29 Apr 2021 12:53

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