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<p>The effects of graphite fluoride (FGi) nanoparticles on the tribological properties of lithium composite grease were investigated with a four-ball tester. When the mass fraction of FGi was 0.2 wt%, it had the best tribological performance, and the friction coefficient and the wear-spot diameter were reduced by 12.9 % and 13.3 %, respectively. Scanning electron microscopy, laser scanning confocal microscopy (LSCM), and X-ray photoelectron spectroscopy were used to observe the steel-ball wear spot. These results showed that FGi nanoparticles filled the surface of the wear spot and generated FeF<sub>3</sub> film during the friction process.</p>

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Effects of graphite fluoride nanoparticles on the tribological properties of lithium composite grease

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Jian-Wei Qiu,
  • Shuai Zhu,
  • Li-Ping Wang,
  • Yue Wang,
  • Li-Juan Zhang,
  • Guang-Neng Dong,
  • Zheng-Jia Ji

摘要

The effects of graphite fluoride (FGi) nanoparticles on the tribological properties of lithium composite grease were investigated with a four-ball tester. When the mass fraction of FGi was 0.2 wt%, it had the best tribological performance, and the friction coefficient and the wear-spot diameter were reduced by 12.9 % and 13.3 %, respectively. Scanning electron microscopy, laser scanning confocal microscopy (LSCM), and X-ray photoelectron spectroscopy were used to observe the steel-ball wear spot. These results showed that FGi nanoparticles filled the surface of the wear spot and generated FeF3 film during the friction process.