| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Pistidda, Claudio
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Thermodynamic assessment of the Ce-H and CeNi H systemcitations
- 2024Comparative analysis of ternary TiAlNb interatomic potentials: moment tensor vs. deep learning approaches
- 2024Mechanical processing and thermal stability of the equiatomic high entropy alloy TiVZrNbHf under vacuum and hydrogen pressurecitations
- 2023Stability and Failure Mechanisms of Al2O3|Al Bilayer Coatings Exposed to 300 Bar Hydrogen at 673 Kcitations
- 2022Magnesium- and intermetallic alloys-based hydrides for energy storage:Modelling, synthesis and propertiescitations
- 2022Magnesium- and intermetallic alloys-based hydrides for energy storage : modelling, synthesis and propertiescitations
- 2022De-hydrogenation/Rehydrogenation Properties and Reaction Mechanism of AmZn(NH2)n-2nLiH Systems (A = Li, K, Na, and Rb)citations
- 2022De-hydrogenation/rehydrogenation properties and reaction mechanism of AmZn(NH2)n-2nLiH systems (A = Li, K, Na, and Rb)citations
- 2022Sustainable NaAlH4 production from recycled automotive Al alloycitations
- 2022Effects of metal-based additives on dehydrogenation process of 2NaBH4 + MgH2 systemcitations
- 2022Operando reaction cell for high energy surface sensitive x-ray diffraction and reflectometrycitations
- 2022Modeling the thermodynamics of the FeTi hydrogenation under para-equilibrium: An ab-initio and experimental studycitations
- 2022Modeling the thermodynamics of the FeTi hydrogenation under para-equilibrium: An ab-initio and experimental studycitations
- 2022De-hydrogenation/Rehydrogenation Properties and Reaction Mechanism of AmZn(NH$_2$)$_{n-2}$nLiH Systems (A = Li, K, Na, and Rb)citations
- 2022Magnesium- and intermetallic alloys-based hydrides for energy storage: modelling, synthesis and properties ; ENEngelskEnglishMagnesium- and intermetallic alloys-based hydrides for energy storage: modelling, synthesis and propertiescitations
- 2022Magnesium- and intermetallic alloys-based hydrides for energy storage: modelling, synthesis and propertiescitations
- 2022Sustainable NaAlH$_4$ production from recycled automotive Al alloycitations
- 2021High Hydrogen Mobility in an Amide–Borohydride Compound Studied by Quasielastic Neutron Scatteringcitations
- 2019A mechanochemical route for the synthesis of $VNbO_{5}$ and its structural re-investigation using structure solution from powder diffraction datacitations
- 2018Insights into the Rb-Mg-N-H System: An Ordered Mixed Amide/Imide Phase and a Disordered Amide/Hydride Solid Solutioncitations
- 2018New Insight on the Hydrogen Absorption Evolution of the Mg–Fe–H System under Equilibrium Conditions
- 2018Tracking the Active Catalyst for Iron-Based Ammonia Decomposition by In Situ Synchrotron Diffraction Studiescitations
- 2017Synthesis, structures and thermal decomposition of ammine MxB12H12 complexes (M = Li, Na, Ca)citations
- 2017Synthesis, structures and thermal decomposition of ammine M x B 12 H 12 complexes (M = Li, Na, Ca)citations
- 2017The crystal structures of carbonyl iron powder – revised using in situ synchrotron XRPDcitations
- 2017Synthesis, structures and thermal decomposition of ammine $mathrm{M_{x}B_{12}H_{12}}$ complexes (M = Li, Na, Ca)citations
- 2015Structural and kinetic investigation of the hydride composite $mathrm{Ca(BH_{4})_{2} + MgH_2}$ system doped with $mathrm{NbF_5}$ for solid-state hydrogen storagecitations
- 2015In situ X-ray diffraction environments for high-pressure reactionscitations
- 2015In situ X-ray diffraction environments for high-pressure reactionscitations
- 2014Effective nanoconfinement of 2LiBH 4 -MgH 2 via simply MgH 2 premilling for reversible hydrogen storagescitations
- 2013Chemical state, distribution and role of Ti- and Nb-based additives on the Ca(BH4)2 systemcitations
- 2011Ca(BH4)(2)-MgF2 Reversible Hydrogen Storage: Reaction Mechanisms and Kinetic Propertiescitations
Places of action
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article
Mechanical processing and thermal stability of the equiatomic high entropy alloy TiVZrNbHf under vacuum and hydrogen pressure
Abstract
This study investigates the potential of nanostructuring the equiatomic high entropy alloy TiVZrNbHf by high-pressure torsion to improve its already promising hydrogen absorption properties. The detailed microstructural analysis of the material after processing demonstrates that a homogenous single-phase nanocrystalline structure can be obtained despite shear band development. Due to the metastable character of many high entropy alloys, this analysis was complemented by investigating the thermal stability of the alloy under both vacuum and hydrogen pressure. For the latter, the material was characterized via in situ X-ray diffraction during hydrogen charging at 500 °C, giving a detailed insight into the phase evolution during initial absorption and subsequent cycling. These experiments evidenced the inherent metastability of TiVZrNbHf, which resulted in its decomposition into a bcc, hcp, and C14 Laves phase under both vacuum and hydrogen atmospheres. Despite decomposition, the material retained its nanocrystalline structure under hydrogen pressure, presumably due to hydride formation, while significant grain growth occurred under vacuum. These findings deepen the understanding of the deformation and hydrogen charging behavior of this promising high entropy alloy, suggesting an approach for engineering such alloys for enhanced stability and performance, particularly in solid-state hydrogen storage applications.