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中国科学院兰州化学物理研究所低维材料摩擦学课题组在高真空环境下类金刚石碳基薄膜摩擦机理研究方面取得新进展。研究工作相继发表在近期出版的ACS Appl.Mater.Interfaces(2013,5,5889～5893)和Carbon(2014,66,259～266)。具有优异摩擦学性能的类金刚石薄膜(DLC)是从微观尺度的微机电系统到宏观尺度的工程部件都具有广泛应用的固体润滑材料。然而,由于对DLC的摩擦机理还缺乏深入理解,难于控制DLC在不同环境中的摩擦学行为,从而极大地限制了其实际应用。研究人员从不同的角度出发提出了DLC减摩抗磨机制,包括化学吸附钝化理论、滑行界面的石墨化理论和转移膜理论,但是到目前为止还没有提出一个被普遍接受的摩擦机理。
Low-dimensional materials Tribology Research Group, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences made new progress in the study of the friction mechanism of diamond-like carbon-based films under high vacuum environment. Research has been published in the recently published ACS Appl. Mater. Interfaces (2013, 5, 5889- 5893) and Carbon (2014, 66, 259-266). Diamond-like carbon films (DLCs) with excellent tribological properties are widely used as solid lubricant materials from micro-scale micro-electromechanical systems to macro-scale engineering components. However, due to the lack of deep understanding of the friction mechanism of DLC, it is difficult to control the tribological behavior of DLC in different environments, which greatly limits its practical application. Researchers have proposed DLC anti-friction and anti-wear mechanisms from different perspectives, including the passivation theory of chemical adsorption, the graphitization theory of the gliding interface and the transfer membrane theory. However, a generally accepted friction mechanism has not been proposed so far.