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Tribological Behavior of Nano-ZrO2 Reinforced PTFE-PPS Composites

  • Wenhan Cao (曹文翰)
  • Jun Gong (龚俊)Email author
  • Yuan Qi
  • Dongya Yang
  • Gui Gao
  • Honggang Wang (王宏刚)Email author
  • Junfang Ren
  • Shengsheng Chen
Advanced Materials
  • 6 Downloads

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.

Key words

nano-ZrO2 PTFE-PPS tribological behavior transfer films 

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Copyright information

© Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature 2019

Authors and Affiliations

  • Wenhan Cao (曹文翰)
    • 1
  • Jun Gong (龚俊)
    • 1
    Email author
  • Yuan Qi
    • 1
  • Dongya Yang
    • 1
  • Gui Gao
    • 2
  • Honggang Wang (王宏刚)
    • 2
    Email author
  • Junfang Ren
    • 2
  • Shengsheng Chen
    • 2
  1. 1.School of Mechanical and Electrical EngineeringLanzhou University of TechnologyLanzhouChina
  2. 2.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouChina

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