Xiaoming Ling , Wenhao Nie , Weiqi Wang , Xuan Zhao , Xin Lin
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Abstract
In this work, the metal Ni-induced graphene/hydrogenated amorphous carbon (a-C: H) composite films were prepared by a direct current (DC) magnetron sputter deposition system using argon and acetylene to sputtering a single nickel target. By adjusting the content of the C2H2 in the gas mixture, the composite films with different microstructures and constituents were prepared. The surface morphology, microstructure, carbon bonding status, hardness, toughness, and tribological properties of the deposited films were systematically analyzed to explore the relationship between structure and properties with C2H2 gas flow ratio. The results indicated that the films were composite films consisting of graphene embedded in hydrogenated amorphous carbon film. The hardness of the films increased significantly with increasing C2H2 gas flow ratio due to the decrease in metallic Ni content in the films. And the decrease in friction coefficient was related to the generation of graphene induced by Ni in the films and the passivation of suspension bonds. Especially, the films deposited at 30 % C2H2 exhibited low friction coefficient and outstanding wear resistance, which provides guidance for further designing carbon-based solid lubricating films with excellent performances.
期刊介绍：
DRM is a leading international journal that publishes new fundamental and applied research on all forms of diamond, the integration of diamond with other advanced materials and development of technologies exploiting diamond. The synthesis, characterization and processing of single crystal diamond, polycrystalline films, nanodiamond powders and heterostructures with other advanced materials are encouraged topics for technical and review articles. In addition to diamond, the journal publishes manuscripts on the synthesis, characterization and application of other related materials including diamond-like carbons, carbon nanotubes, graphene, and boron and carbon nitrides. Articles are sought on the chemical functionalization of diamond and related materials as well as their use in electrochemistry, energy storage and conversion, chemical and biological sensing, imaging, thermal management, photonic and quantum applications, electron emission and electronic devices.
The International Conference on Diamond and Carbon Materials has evolved into the largest and most well attended forum in the field of diamond, providing a forum to showcase the latest results in the science and technology of diamond and other carbon materials such as carbon nanotubes, graphene, and diamond-like carbon. Run annually in association with Diamond and Related Materials the conference provides junior and established researchers the opportunity to exchange the latest results ranging from fundamental physical and chemical concepts to applied research focusing on the next generation carbon-based devices.
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