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 ? phase whose unit cell expanded during the hydrogen absorption. The maximum storage capacity of this ? 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
Ponterio R;
2014
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 ? phase whose unit cell expanded during the hydrogen absorption. The maximum storage capacity of this ? 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.File in questo prodotto:
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