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Microstructure and First Hydrogenation Properties of Ti 16 V 60 Cr 24−x Fe x + 4 wt.% Zr Alloy for x = 0, 4, 8, 12, 16, 20, 24

Author

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  • Francia Ravalison

    (Hydrogen Research Institute, Université du Québec à Trois-Rivières, Trois-Rivières, QC G9A5H7, Canada)

  • Jacques Huot

    (Hydrogen Research Institute, Université du Québec à Trois-Rivières, Trois-Rivières, QC G9A5H7, Canada)

Abstract

In body-centered cubic (BCC) alloys of transition elements, elemental addition or substitution in the vanadium-based alloys can be beneficial for improving the hydrogen storage properties and for reducing the production cost. In this context, the current study focused on the effect of the substitution of Cr by Fe in Ti 16 V 60 Cr 24−x Fe x + 4 wt.% Zr alloys where x = 0, 4, 8, 12, 16, 20, 24. The microstructure of each alloy was composed of a matrix having a chemical composition close to the nominal one and a Zr-rich region. From X-ray diffraction patterns, it was found that the matrix has a BCC structure, and the Zr-rich regions present the C14 Laves phase structure. The lattice parameter of BCC phases decreased linearly with x, in accordance with Vegard’s law. The measurement of the first hydrogenation at 298 K under 3 MPa of hydrogen revealed a decrease in the maximum hydrogen capacity: 3.8 wt.% for x = 0, 3.1 wt.% for x = 4 and around 2 wt.% for x = 8 to 24. The XRD patterns after hydrogenation showed a BCT phase for all alloys, with a C14 phase for x = 4, 8, 12 and with C14 and C15 for x = 16, 20 and 24.

Suggested Citation

  • Francia Ravalison & Jacques Huot, 2023. "Microstructure and First Hydrogenation Properties of Ti 16 V 60 Cr 24−x Fe x + 4 wt.% Zr Alloy for x = 0, 4, 8, 12, 16, 20, 24," Energies, MDPI, vol. 16(14), pages 1-13, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:14:p:5360-:d:1193718
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    References listed on IDEAS

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    1. Li, Jigang & Guo, Yanru & Jiang, Xiaojing & Li, Shuan & Li, Xingguo, 2020. "Hydrogen storage performances, kinetics and microstructure of Ti1.02Cr1.0Fe0.7-xMn0.3Alx alloy by Al substituting for Fe," Renewable Energy, Elsevier, vol. 153(C), pages 1140-1154.
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