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Hydrogen desorption properties of mechanically alloyed MgH2-9 wt % V-1 wt% Al nanocomposite
Paper ID : 2228-UFGNSM13-FULL (R1)
Authors:
Abstract:
In this study, 9 wt% V and 1 wt% Al were co-milled with MgH2 at different milling times to produce nanostructured composite powders. The effect of milling time and additives on the hydrogen desorption properties of obtained powders was evaluated by thermal analyzer method and compared with pure MgH2. The phase constituents and grain size of powders were characterized by X-ray diffractometry method. As the milling time was increased, both the grain size and hydrogen desorption temperature were decreased. An improved dehydrogenation temperature was achieved by alloying of MgH2 with V and Al. The effect of the V and Al addition on improvement of the dehydrogenation properties was discussed.
Keywords:
Mechanical alloying, Magnesium hydride, Dehydrogenation, nanocomposite
Status : Paper Accepted (Poster Presentation)