Tribological Behavior of Ni-based Self-lubricating Composites with the Addition of Ti3SiC2 and Ag2W2O7

  • Siping Feng (冯四平)Email author
  • Xincong Zhou
  • Qiaoxin Zhang
Metallic Materials


The tribological properties of Nickel-based composites containing Ti3SiC2 and Ag2W2O7 fabricated by spark plasma sintering against Si3N4 balls were investigated using a ball-on-disk tribometer from room temperature to 600 °C. The tribolayers formed on the friction surface and their effects on the tribological properties of composites at different temperatures were discussed based on the worn surface characterization. The results show that Ag2W2O7 is decomposed into metallic silver and CrWO4 during the high-temperature fabrication process. The composite with the addition of 20 wt% Ti3SiC2 and 5 wt% Ag2W2O7 exhibits a friction coefficient of 0.33–0.49 and a wear rate of 7.07×10−5–9.89×10−5 mm3/(Nm) over a wide temperature range from room temperature to 600 °C. The excellent tribological properties at a wide temperature range are attributed to the formation of a glaze layer at low temperature and a tribooxide layer at high temperature, which can provide a low shearing strength for the synergistic effects of Ag and tribooxides.

Key words

nickel-based composite self-lubrication wear tribolayer synergistic effect 


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Copyright information

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

Authors and Affiliations

  • Siping Feng (冯四平)
    • 1
    • 2
    Email author
  • Xincong Zhou
    • 1
    • 2
  • Qiaoxin Zhang
    • 3
  1. 1.Reliability Engineering Institute, School of Energy and Power EngineeringWuhan University of TechnologyWuhanChina
  2. 2.Key Laboratory of Marine Power Engineering and Technology (Ministry of Transportation)Wuhan University of TechnologyWuhanChina
  3. 3.School of Mechanical and Electronic EngineeringWuhan University of TechnologyWuhanChina

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