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首页> 外文期刊>Applied Surface Science >Structure, properties and growth mechanism of a self-assembled nanocylindrical MoS_2/Mo-S-C composite film
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Structure, properties and growth mechanism of a self-assembled nanocylindrical MoS_2/Mo-S-C composite film

机译：自组装纳米圆柱MoS_2 / Mo-S-C复合膜的结构，性能和生长机理

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摘要

A self-assembled nanocylindrical MoS2/M-S-C composite film with excellent tribological properties was synthesized by simultaneously sputtering of MoS2 and graphite targets. The HRTEM observation of the polished surface and cross-sections reveals that this nanocylindrical structure with MoS2-rich phase encircled by carbon matrix arranging alternately in vertical patterns is initiated from the film-substrate interface and continues to the film surface. The XRD results show that this film exhibits dominant (1 0 0) basal planes. In comparison with pure MoS2 film, this nanocylindrical MoS2/Mo-S-C composite film exhibits largely enhanced hardness and higher elastic recovery ratio (d(elastic)/d(max)) under the same load. Surprisingly, the pin-on-disk tribotests in vacuum on it display a low friction-coefficient and long wear lives (up to 5x10(5) revolutions). The HRTEM observation of wear tracks finds that the MoS2 texture was reassembled on the film surface, and a tribofilm with preferential (0 0 2) basal planes in thickness about 100 nm is quickly formed in sliding. Based on the XRD results and TEM images of this film, this clear nanocylindrical structure was attributed to atomic transport occurring preferentially along the edge sites of MoS2 crystallites.
机译：通过同时溅射MoS2和石墨靶，合成了具有优异摩擦学性能的自组装纳米圆柱MoS2 / M-S-C复合膜。 HRTEM对抛光表面和横截面的观察表明，这种由碳基质环绕并垂直排列的，富含MoS2相的纳米圆柱结构是从膜-膜界面开始的，并一直延伸到膜表面。 XRD结果表明，该膜具有显性（1 0 0）基面。与纯MoS2薄膜相比，该纳米圆柱形MoS2 / Mo-S-C复合薄膜在相同载荷下表现出大大增强的硬度和更高的弹性回复率（d（弹性）/ d（max））。令人惊讶的是，其在真空中的磁盘销钉摩擦测试显示出低摩擦系数和长寿命（高达5x10（5）转）。磨损痕迹的HRTEM观察发现，MoS2织构已在薄膜表面重新组装，并在滑动过程中迅速形成厚度约100 nm的具有优先（0 0 2）基面的摩擦膜。根据该薄膜的XRD结果和TEM图像，这种清晰的纳米圆柱结构归因于原子沿着MoS2晶体边缘位置优先发生的原子迁移。

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  • 来源
    《Applied Surface Science》 |2019年第28期|564-574|共11页
  • 作者

    Duan Zewen; Qiao Li; Chai Liqiang; Xu Jiao; Wang Peng; Liu Weimin;

  • 作者单位

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China;

    Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Nanocylindrical Mo-S-C film; Nanostructure characterizations; Friction; Hardness; Growth mechanism;

    机译：纳米圆柱Mosc薄膜纳米结构表征摩擦硬度生长机理;

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