Hydrogen storage in TiZrNbFeNi high entropy alloys, designed by thermodynamic calculations

The hydrogen storage properties of the novel equiatomic TiZrNbFeNi and non-equiatomic Ti20Zr20Nb5Fe40Ni15 high entropy alloys (HEAs) were studied. These alloys were designed with the aid of thermodynamic calculations using the CALPHAD method due to their tendency to form single C14 Laves phase, a ph...

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Bibliographic Details
Published in:International journal of hydrogen energy 2020-11, Vol.45 (58), p.33759-33770
Main Authors: Floriano, Ricardo, Zepon, Guilherme, Edalati, Kaveh, Fontana, Gabriel L.B.G., Mohammadi, Abbas, Ma, Zhongliang, Li, Hai-Wen, Contieri, Rodrigo J.
Format: Article
Language:English
Subjects:
C14 laves phase
CALPHAD
High-entropy alloys (HEAs)
Hydrogen storage
Metal hydrides
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Summary:The hydrogen storage properties of the novel equiatomic TiZrNbFeNi and non-equiatomic Ti20Zr20Nb5Fe40Ni15 high entropy alloys (HEAs) were studied. These alloys were designed with the aid of thermodynamic calculations using the CALPHAD method due to their tendency to form single C14 Laves phase, a phase desirable for room-temperature hydrogen storage. The alloys, which were synthesized by arc melting, showed a dominant presence of C14 Laves phases with the (Zr, Ti)1(Fe, Ni, Nb, Ti)2 constitution and small amounts of cubic phases (
ISSN:0360-3199
1879-3487
DOI:10.1016/j.ijhydene.2020.09.047