Origin of higher graphitization under higher humidity on the frictional surface of self-mated hydrogenated carbon films | |
Zhang JY(张俊彦)2; Zhang JY(张激扬)1; Wang YF(王永富)2; Li RY(李瑞云)1,2 | |
刊名 | Applied Surface Science |
2019-07-11 | |
卷号 | 494期号:无页码:452-457 |
关键词 | Hydrogenated amorphous carbon film Graphitization Fullerene-like Wear Humidity |
DOI | https://doi.org/10.1016/j.apsusc.2019.07.078 |
英文摘要 | The ‘friction-induced graphitization’ mechanism for hydrogenated amorphous carbon (a-C:H) films has been postulated, but it requires concrete analyses at specific conditions. Here, we have discussed the reason for higher sp2 bond content on the interface of self-mated fullerene-like a-C:H films when the relative humidity (RH) increases from dry N2 to 70%. The reason is the failure of the role of FL structures and the change of interface structure evolution. Before RH 50%, FL structures work properly, and the films remain low graphitization to form nanoparticle-like debris having onion-like structures. After RH 50%, the failure of the role of FL structures leads to the abruptly increasing wear, and the formation of larger flake-like debris. Higher sp2 content, is not only caused by formation of longer and order graphene sheets than the original surfaces, but also linked with the increase of C=O bonds. This is unlike the general friction-induced graphitization that higher sp2 content indicates higher graphitization. The result reminds us to further understand friction-induced graphitization mechanism at special condition. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.licp.cn/handle/362003/25737] |
专题 | 兰州化学物理研究所_固体润滑国家重点实验室 兰州化学物理研究所_先进润滑与防护材料研究发展中心 |
通讯作者 | Zhang JY(张激扬); Wang YF(王永富) |
作者单位 | 1.北京控制工程研究所,精密转动和传动机构长寿命技术北京市重点实验室 2.固体润滑国家重点实验室 |
推荐引用方式 GB/T 7714 | Zhang JY,Zhang JY,Wang YF,et al. Origin of higher graphitization under higher humidity on the frictional surface of self-mated hydrogenated carbon films[J]. Applied Surface Science,2019,494(无):452-457. |
APA | Zhang JY,Zhang JY,Wang YF,&Li RY.(2019).Origin of higher graphitization under higher humidity on the frictional surface of self-mated hydrogenated carbon films.Applied Surface Science,494(无),452-457. |
MLA | Zhang JY,et al."Origin of higher graphitization under higher humidity on the frictional surface of self-mated hydrogenated carbon films".Applied Surface Science 494.无(2019):452-457. |
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