Hydrogen absorption in a Ti-6Al-4V alloy prepared by ball milling was investigated in view of the reversible storage of hydrogen in a solid state. The material characterization by X-ray and neutron diffractometry demonstrated the formation of a single a phase whose unit cell expanded during the hydrogen absorption. The maximum storage capacity of this alpha phase was 1.8 wt% H and no hydride formation was observed, The existence of such a particular supersaturated hexagonal phase was attributed to the strongly defective structure formed by the mechanical alloying process.

Reversible hydrogen absorption in a Ti-6Al-4V alloy produced by mechanical alloying / Bonaccorsi, Lucio Maria; Calabrese, Luigi; Pintaudi, A.; Proverbio, Edoardo; Aliotta, F.; Ponterio, R.; Scherillo, A.; Tresoldi, D.. - In: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY. - ISSN 0360-3199. - 39:28(2014), pp. 15540-15548. [10.1016/j.ijhydene.2014.07.149]

Reversible hydrogen absorption in a Ti-6Al-4V alloy produced by mechanical alloying

BONACCORSI, Lucio Maria
;
2014-01-01

Abstract

Hydrogen absorption in a Ti-6Al-4V alloy prepared by ball milling was investigated in view of the reversible storage of hydrogen in a solid state. The material characterization by X-ray and neutron diffractometry demonstrated the formation of a single a phase whose unit cell expanded during the hydrogen absorption. The maximum storage capacity of this alpha phase was 1.8 wt% H and no hydride formation was observed, The existence of such a particular supersaturated hexagonal phase was attributed to the strongly defective structure formed by the mechanical alloying process.
2014
Hydrogen absorbing materials; Titanium alloys; Mechanical alloying; Crystal structure; Neutron diffraction
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12318/6985
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