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Effect of Ti Substitution on the Microstructure and Properties of Zr–Mn–V–Ni AB2 Type Hydride Electrode Alloys

  • Journal of Materials Research
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Abstract

The electrochemical capacity, hydrogen absorbed/desorbed activation properties of alloy Zr(Mn0.1V0.3Ni0.6)2 were improved after Ti substitution for the Zr. The microstructure of Zr1xTix (Mn0.1V0.3Ni0.6)2 (x = 0, 0.5) alloys was analyzed by x-ray diffraction (XRD), transmission electron microscopy (TEM), and energy dispersive spectrum (EDS) analysis. A systematic structural analysis shows that there are two phases in the Ti-substituted alloy of Zr0.5Ti0.5(Mn0.1V0.3Ni0.6)2: C14 Laves phase and Ti-containing “premartensite” R phase of Ti0.8Zr0.2Ni. The improvement of electrochemical properties of alloy Zr(Mn0.1V0.3Ni0.6)2 after Ti substitution can be attributed to the Ti substitution for Zr sites in C14 Laves phase, the formation of Ti0.8Zr0.2Ni R-phase, and disappearance of Zr–Ni binaries.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China

    Xueyan Song, Xiaobin Zhang, Yongquan Lei & Qidong Wang

  2. Beijing Laboratory of Electron Microscopy, Center for Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 2724, Beijing, 100080, China

    Xueyan Song & Ze Zhang

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  1. Xueyan Song
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  2. Ze Zhang
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  3. Xiaobin Zhang
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  4. Yongquan Lei
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Song, X., Zhang, Z., Zhang, X. et al. Effect of Ti Substitution on the Microstructure and Properties of Zr–Mn–V–Ni AB2 Type Hydride Electrode Alloys. Journal of Materials Research 14, 12 (1999). https://doi.org/10.1557/JMR.1999.0174

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  • DOI: https://doi.org/10.1557/JMR.1999.0174

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