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Science China Technological Sciences

, Volume 61, Issue 12, pp 1839–1844 | Cite as

Effect of thermal oxidation on microstructures and mechanical properties of nanoporous coppers

  • Wen Zhou
  • Qing YangEmail author
  • ShaoDong Sun
  • ShuHua Liang
Article
  • 14 Downloads

Abstract

Nanoporous copper oxides were formed by thermal oxidation of nanoporous copper at 150°C–270°C. The oxidation process of nanoporous copper was investigated by using XRD, SEM, nitrogen adsorption, HRTEM and nanoindentation. The variation of microstructures and mechanical properties was analyzed. The results showed that the content of copper oxides increased, the ligament gradually coarsened, and the mechanical properties of nanoporous structure were improved with the increase of oxidation temperature. When the oxidation temperature was below 210°C, the ligament surface was oxidized to Cu2O, and the composite structure of Cu2O@Cu was formed. The formation of CuO occurred since 220°C, and the composite structure of CuO/ Cu2O@Cu was formed. CuO nanowires were grown on the ligament surface at 250°C; the specific surface area, elastic modulus and hardness of nanoporous structure are 1.37, 3.31 and 7.58 times that of the nanoporous copper, respectively.

Keywords

nanoporous copper thermal oxidation microstructure mechanical property 

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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Wen Zhou
    • 1
  • Qing Yang
    • 1
    • 2
    Email author
  • ShaoDong Sun
    • 1
    • 2
  • ShuHua Liang
    • 1
    • 2
  1. 1.Faculty of Materials Science and EngineeringXi’an University of TechnologyXi’anChina
  2. 2.Shaanxi Province Key Laboratory for Electrical Materials and Infiltration TechnologyXi’an University of TechnologyXi’anChina

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