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      https://www.ias.ac.in/article/fulltext/boms/044/0088

    • Keywords

       

      MoS$_2$; nanoparticles; hollow structure; tribological property; exfoliation.

    • Abstract

       

      The molybdenum disulphide (MoS$_2$) nanoparticles have been widely applied as solid lubricants. In this article, hollow core-shell MoS$_2$ nanoparticles with flower-like surface were prepared by a two-step solvothermal method,which were characterized by X-ray diffraction, nitrogen adsorption–desorption isotherm, X-ray photoelectron spectroscopy, scanning electron microscopy and transmission electron microscopy. The friction and wear properties of the prepared hollow core-shell MoS$_2$ nanoparticles in oils were investigated using a ball-on-disk tribotester. The results showed that the prepared hollow core-shell MoS$_2$ nanoparticles could significantly improve the friction-reducing and antiwear properties of the oils. It was found that the friction coefficient was reduced by 43.80% and the wear was decreased by as much as 8 times after adding the hollow MoS$_2$ into oils. The lubrication mechanism of the fabricated hollow MoS$_2$ nanoparticles in oils was interpreted as that the hollow MoS$_2$ nanoparticles were exfoliated into layeropened fragments with the formation of ultrathin nanosheets, which were beneficial to the formation of the tribofilm on rubbing surfaces.

    • Author Affiliations

       

      WENHU XU1 2 CHUANJIN FU1 2 YUN HU1 JIANFENG CHEN1 2 YANPING YANG3 MEIRONG YI1 2

      1. School of Mechatronics Engineering, Nanchang University, Nanchang 330031, China
      2. Key Laboratory of Tribology, Nanchang University, Nanchang 330031, China
      3. Jiangxi Hongdu Aviation Industry Co., Ltd., Nanchang 330031, China
    • Dates

       
  • Bulletin of Materials Science | News

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