• WENHU XU

      Articles written in Bulletin of Materials Science

    • Synthesis of hollow core-shell MoS$_2$ nanoparticles with enhanced lubrication performance as oil additives

      WENHU XU CHUANJIN FU YUN HU JIANFENG CHEN YANPING YANG MEIRONG YI

      More Details Abstract Fulltext PDF

      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.

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2021-2022 Indian Academy of Sciences, Bengaluru.