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Tribological Behavior of Nano-ZrO2 Reinforced PTFE-PPS Composites

  • Advanced Materials
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Abstract

Polytetrafluoroethylene (PTFE) is a commonly used seal material for oil-free engine that is well known for its excellent tribological properties. In this work, the nano-ZrO2 particles were used as the friction modifiers to improve the friction and wear performance of PTFE-PPS composites. The friction and wear characteristics of PTFE/PPS-nano-ZrO2 composites were investigated by a block-on-ring tester under dry friction sliding condition. The worn surfaces, counterpart transfer films and wear debris were studied by scanning electron microscopy and X-ray photoelectron spectroscopy. It was found that the increase of nano-ZrO2 content could effectively reduce the coefficient of friction and enhance the anti-wear ability of PTFE-PPS composites. Especially, the best tribological properties of the composites were obtained when the particle content of nano-ZrO2 was 10 vol%, the anti-wear performance of composite is 195 times better than that of the unfilled PTFE-PPS composite. Under different conditions, the coefficient of friction of PTFE/PPS-nano-ZrO2 composites was more affected by the applied load while the wear rate was more affected by the sliding velocity.

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Authors and Affiliations

  1. School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China

    Wenhan Cao  (曹文翰), Jun Gong  (龚俊), Yuan Qi & Dongya Yang

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

    Gui Gao, Honggang Wang  (王宏刚), Junfang Ren & Shengsheng Chen

Authors
  1. Wenhan Cao  (曹文翰)
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  2. Jun Gong  (龚俊)
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  3. Yuan Qi
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  4. Dongya Yang
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  5. Gui Gao
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  6. Honggang Wang  (王宏刚)
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  7. Junfang Ren
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  8. Shengsheng Chen
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Corresponding authors

Correspondence to Jun Gong  (龚俊) or Honggang Wang  (王宏刚).

Additional information

Funded by the National Natural Science Foundation of China (Nos.51165022, 51675509)

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Cao, W., Gong, J., Qi, Y. et al. Tribological Behavior of Nano-ZrO2 Reinforced PTFE-PPS Composites. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 34, 527–533 (2019). https://doi.org/10.1007/s11595-019-2083-1

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  • DOI: https://doi.org/10.1007/s11595-019-2083-1

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