Selective-releasing-affected lubricant mechanism of a self-assembled MoS2/Mo-S-C nanoperiod multilayer film sliding in diverse atmospheres | |
Xu J(许佼); He, T. F.; Chai LQ(柴利强); Qiao L(乔丽); Zhang, X. Q.; Wang P(王鹏); Liu WM(刘维民); Wang P(王鹏) | |
刊名 | Physical Chemistry Chemical Physics |
2017 | |
卷号 | 19期号:12页码:8161-8173 |
ISSN号 | 1463-9076 |
通讯作者 | 王鹏 |
英文摘要 | A self-assembled MoS2/Mo–S–C multilayer film prepared by r.f. co-sputtering of MoS2 and graphite targets was tribotested in diverse sliding atmospheres, and the lubricant mechanism and its correlations to the selective releasing behavior of non-lubricant component were analyzed in detail. Based on the analysis of composition and structural transformation of transferred materials by Raman and HRTEM characterizations, selective releasing behavior according to the sliding atmospheres were found to be particularly apparent in vacuum and dry inert atmospheres. Under these conditions, a-C in graphitic form was selectively released outwards from the topmost surfaces of contacts, leaving MoS2 layers finely reordered in (002) orientation playing a lubricant role. Composition and structural transformation were observed not only on the topmost surface of wear track but also on the underlying layer at a thickness of tens of nanometers. Moreover, it was found that the selective releasing of a-C initiated from the center of contacts with higher pressure, and then developed toward the edges, resulting in a gradual change in the composition and microstructure of the transferred materials from the well-aligned MoS2 layers in the center to the graphitic a-C dominant composites at the edges. The short running-in periods and low-friction performance in all the tribotests suggested that the initial preference of MoS2-riched sublayers in (002) orientation may facilitate the formation of shearless tribofilms and therefore provide a feasible way of structural tailoring in the MoS2-based lubricant films for an improved triboactive response. |
学科主题 | 材料科学与物理化学 |
收录类别 | SCI |
资助信息 | the National Natural Science Foundation of China (No. 51227804;11475236);Chinese Academy of Sciences |
语种 | 英语 |
WOS记录号 | WOS:000397860900005 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/21638] |
专题 | 兰州化学物理研究所_固体润滑国家重点实验室 |
通讯作者 | Wang P(王鹏) |
作者单位 | Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Xu J,He, T. F.,Chai LQ,et al. Selective-releasing-affected lubricant mechanism of a self-assembled MoS2/Mo-S-C nanoperiod multilayer film sliding in diverse atmospheres[J]. Physical Chemistry Chemical Physics,2017,19(12):8161-8173. |
APA | Xu J.,He, T. F..,Chai LQ.,Qiao L.,Zhang, X. Q..,...&王鹏.(2017).Selective-releasing-affected lubricant mechanism of a self-assembled MoS2/Mo-S-C nanoperiod multilayer film sliding in diverse atmospheres.Physical Chemistry Chemical Physics,19(12),8161-8173. |
MLA | Xu J,et al."Selective-releasing-affected lubricant mechanism of a self-assembled MoS2/Mo-S-C nanoperiod multilayer film sliding in diverse atmospheres".Physical Chemistry Chemical Physics 19.12(2017):8161-8173. |
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