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      Friction and wear behaviors of MoS 2-multi-walled-carbon-nanotube hybrid reinforced polyurethane composite coating

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          Abstract

          MoS 2-multi-walled-carbon-nanotube (MWCNT) hybrids containing two-dimensional MoS 2 and one-dimensional MWCNTs were synthesized through a one-step hydrothermal reaction. X-ray-diffraction and transmission-electron-microscopy results demonstrated that MoS 2 nanosheets were successfully synthesized, and uniformly anchored on the MWCNTs’ surfaces. Furthermore, the effects of the MoS 2-MWCNT hybrids on the tribological performances of polyurethane composite coatings were investigated using a UMT-2MT tribo-tester. Friction and wear test results revealed that the friction coefficient and wear rate of a 3 wt% MoS 2-MWCNT-1 filled polyurethane composite coating were reduced by 25.6% and 65.5%, respectively. The outstanding tribological performance of the MoS 2-MWCNT-1 reinforced polyurethane composite coating was attributed to the excellent load-carrying capacity of the MWCNTs and good lubricant ability of MoS 2. The surface morphologies of the worn surfaces and counterpart ball surfaces were investigated to reveal the wear mechanisms.

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          Author and article information

          Contributors
          Journal
          Friction
          Friction
          Tsinghua University Press (Beijing/Hong Kong )
          2223-7704
          2223-7690
          01 August 2019
          01 October 2019
          : 7
          : 4
          : 316-326
          Affiliations
          1State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
          2University of Chinese Academy of Sciences, Beijing 100039, China
          3School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
          Author notes
          *Corresponding authors: Zhaozhu ZHANG, E-mail: zzzhang@ 123456licp.cas.cn ; Xuehu MEN, E-mail: menxh@ 123456lzu.edu.cn
          Article
          s40544-018-0214-x
          10.1007/s40544-018-0214-x
          Copyright © Journals of Tsinghua University Press

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 Unported License (CC BY-NC 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by-nc/4.0/.

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