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Tribological Behavior of Novel Core–Shell Fe3O4@PEG Nano-Additives

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Abstract

In this study, the Fe3O4@PEG nanocomposites with core–shell structure were fabricated by a co-precipitation method and characterized by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, X-ray diffractometer and thermal gravimetric. The physicochemical and tribological properties of the Fe3O4@PEG nanocomposites in aqueous glycerol were systematically evaluated on steel/steel contact for the first time. The aqueous glycerol solution added with 1.0 wt% Fe3O4@PEG showed no obvious precipitation after standing for 72 h and had good dispersion stability. Compared with the base aqueous glycerol, the Fe3O4@PEG nanocomposites exhibited excellent friction-reducing and anti-wear properties at an optimal concentration of 1.0 wt%, with a 41.4% decrease in friction coefficient and a 24.1% reduction in wear volume. Also, the Fe3O4@PEG nanocomposites in aqueous glycerol exhibited superior lubricating performance than unmodified Fe3O4. The boundary lubrication films formed on the surface were attributed to be the main factor in reducing friction and wear, and a possible lubrication mechanism was suggested.

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Acknowledgements

This work was supported by National Key R&D Program of China (2018YFB2000601) and National Natural Science Foundation of China (NSFC 51875553).

Funding

Funding was supported by National Key R&D Program of China, (Grant No. 2018YFB2000601), Natural Science Foundation of China, (Grant No. 51875553).

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Authors and Affiliations

  1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China

    Tao Yang, Qin Zhao, Meng Hu, Gaiqing Zhao, Kuiliang Gong & Xiaobo Wang

  2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China

    Tao Yang

  3. Zibo Innovation Center of High-End Synthetic Lubricating Materials, Zibo, 255000, China

    Xiaozhen Wang & Kuiliang Gong

  4. National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng, 475004, China

    Meng Hu

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  1. Tao Yang
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  2. Qin Zhao
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  4. Xiaozhen Wang
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Correspondence to Kuiliang Gong or Xiaobo Wang.

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Yang, T., Zhao, Q., Hu, M. et al. Tribological Behavior of Novel Core–Shell Fe3O4@PEG Nano-Additives. Tribol Lett 70, 116 (2022). https://doi.org/10.1007/s11249-022-01656-6

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