Author/Authors :
Bonaccorsi، نويسنده , , L. and Calabrese، نويسنده , , L. and Pintaudi، نويسنده , , A. and Proverbio، نويسنده , , E. and Aliotta، نويسنده , , F. and Ponterio، نويسنده , , R. and Scherillo، نويسنده , , A. and Tresoldi، نويسنده , , D.، نويسنده ,
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 α phase whose unit cell expanded during the hydrogen absorption. The maximum storage capacity of this α 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.
Keywords :
crystal structure , Titanium alloys , mechanical alloying , Hydrogen absorbing materials , Neutron diffraction
