Rare Metals

pp 1–8 | Cite as

Self-sensing tribological coating with phosphor particles for wear indicator

  • Ling HeEmail author
  • Xue-Yan Wu
  • Wen-Sheng Li
  • Mi-Na Zhang
  • Shu-Jie Liu


Monitoring of coating health was achieved by embedding sensor materials (MAl2O4: Eu2+, Dy3+, M = Sr, Ba) in tribological coating. When the luminescence disappears under ultraviolet (UV) light, it means that the functional coating is worn out and that recoating is needed. In this work, four types of alloy (Cu-14Al-X, Cu, Cu-Al, Al) composite coatings were investigated by vacuum pressure-assisted sintering method. The composite coatings with different copper–aluminium alloy matrixes were compared by phase composition, microstructure, luminescence properties and tribological performance. The results indicate that the Cu-14Al-X matrix composite coating shows not only good resistance to wear but also exhibits strong green light emitting under ultraviolet (UV) light. It is the best wear-resistant self-sensitive coating which has potential industrial value. When the coating wore or broke, the emitting intensity will decrease or disappear.


Copper–aluminium alloy coatings Luminescent powders Wear indicator Luminescent spectroscopy Tribology 



This work was financially supported by the National Natural Science Foundation of China (No. 51674130), Natural Science Fund of Gansu Province of China (No. 1508RJZA049) and the International Science and Technology Cooperation Projects (No. 2015DFR51090).


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Copyright information

© The Nonferrous Metals Society of China and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Ling He
    • 1
    Email author
  • Xue-Yan Wu
    • 2
  • Wen-Sheng Li
    • 1
  • Mi-Na Zhang
    • 2
  • Shu-Jie Liu
    • 2
  1. 1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous MetalsLanzhou University of TechnologyLanzhouChina
  2. 2.School of Materials Science and EngineeringLanzhou University of TechnologyLanzhouChina

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