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Microstructural evolution of body-centered cubic structure related Ti–Zr–Ni phases in non-stoichiometric Zr-based Zr–Ti–Mn–V–Ni hydride electrode alloys

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Abstract

Non-stoichiometric Zr-based alloys were prepared, and the corresponding electrochemical properties were characterized as hydride electrode alloys. The microstructure and chemical composition of non-stoichiometric Zr–Ti–Mn–V–Ni hydride electrode alloys were systematically investigated by x-ray Rietveld refinement, transmission electron microscopy (TEM), and energy dispersive spectroscopy under TEM observation. C14, C15 Laves phases and non-Laves phases were identified in Zr1−xTix(MnVNi)2.2 (x = 0, 0.2, 0.3, 0.4) alloys. Non-Laves phases in Zr1-xTix(MnVNi)2.2 (x = 0, 0.2, 0.3, 0.4) alloys are Ti–Zr–Ni phases related to the TiNi phase with pseudo-body-centered-cubic structure of the CsCl type. The evolution of crystallography and phase constitution for Ti–Zr–Ni non-Laves phases with different alloy composition was systematically studied. The influence of the Ti–Zr–Ni phases on the electrochemical properties of non-stoichiometric Zr1−xTix(MnVNi)2.2 alloys is briefly discussed.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Zhejiang University, People’s Republic of China

    Xueyan Song

  2. Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, Beijing, People’s Republic of China

    Xueyan Song

  3. Applied Superconductivity Center, University of Wisconsin-Madison, 1500 Engineering Drive, 927 ERB, 53706, Madison, Wisconsin, People’s Republic of China

    Xueyan Song

  4. Department of Materials Science and Engineering, Zhejiang University, People’s Republic of China

    Yun Chen

  5. Department of Chemical Engineering, Instituto Superior Tecnico, Lisbon, Portugal

    Yun Chen

  6. Department of Chemical Engineering, Instituto Superior Tecnico, Lisbon, Portugal

    Cesar Sequeira

  7. Department of Materials Science and Engineering, Zhejiang University, People’s Republic of China

    Yongquan Lei & Qidong Wang

  8. Beijing Laboratory of Electron Microscopy, Chinese Academy of Sciences, Beijing, People’s Republic of China

    Ze Zhang

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  1. Xueyan Song
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  2. Yun Chen
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  3. Cesar Sequeira
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  4. Yongquan Lei
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  5. Qidong Wang
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  6. Ze Zhang
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Correspondence to Xueyan Song.

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Song, X., Chen, Y., Sequeira, C. et al. Microstructural evolution of body-centered cubic structure related Ti–Zr–Ni phases in non-stoichiometric Zr-based Zr–Ti–Mn–V–Ni hydride electrode alloys. Journal of Materials Research 18, 37–44 (2003). https://doi.org/10.1557/JMR.2003.0006

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  • DOI: https://doi.org/10.1557/JMR.2003.0006

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