In situ hydrogen desorption study from high entropy hydrides: effect of addition of non-absorbing elements (Al, Cr, Mo) in the TiVNb alloy
High entropy alloys are a new class of materials with exciting hydrogen storage properties. We propose here to study the phase transition during hydrogen thermal desorption from the (TiVNb)100-x(A)x alloys where A = Al, Cr and Mo. The hydride phases with A = Cr and Mo adopt fcc lattice whereas, the hydrides containing Al have mainly a bct structure. It is not clear, yet which parameters influence the formation of one or the other lattices: chemical composition, steric effects, lattice strain or preferential occupation of hydrogen in specific interstitials etc. Thus, neutron diffraction studies are essential to elucidate the phase transformation leading to the formation of either fcc or bct dihydride phases as function of A element (Al, Cr and Mo) and to localize the deuterium atoms in the interstitial sites. These results will help understanding the effect of A element addition and will guide further research on high entropy alloys for hydrogen storage.
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The recommended format for citing this dataset in a research publication is in the following format:
ZLOTEA Claudia; COUTURAS Fabrice; GREAVES Faye; NASSIF Vivian and PINEDA ROMERO Nayely. (2023). In situ hydrogen desorption study from high entropy hydrides: effect of addition of non-absorbing elements (Al, Cr, Mo) in the TiVNb alloy. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-25-284
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