Friction behavior of 2D hydrogenated diamond-like films and bilayer graphene

KX Lin and DS Li and Y Ye and ZG Ye and WG Jiang and QH Qin and DW Zuo, DIAMOND AND RELATED MATERIALS, 127, 109179 (2022).

DOI: 10.1016/j.diamond.2022.109179

It is important to distinguish the friction behavior between 2D hydrogenated diamond-like film (HDLF) and bilayer graphene (BG), which makes it difficult to determine the friction mechanisms due to the complexity of the sliding interface. Nano-scratch simulation is carried out to investigate the change of the average friction force and the degree of friction of the epitaxial 2D carbon film covering the surface of 4H-SiC under different normal loads. The results show that along with the increase of normal load, the average friction force on the interface of HDLF increases sharply compared with that in BG. During the stick- slip process, the huge damping produced by HDLF differs from the friction behavior of BG films due to the fast transport of phonons at the interface.

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