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  • Magnesium alloys for hydrogen storage = Magnezij za skladiščenje vodika
    Vojtěch, Dalibor ; Knotek, Vítězslav
    Several as-cast, binary Mg-Ni and ternary Mg-Ni-Mm (Mm = mischmetal) alloys were studied with respect to hydrogen storage. The alloys were hydrided using a new, electrochemical process to find the ... most promising alloy. The electrochemical hydriding process consisted of the electrolysis of a 6-M KOH solution in which the hydrided alloy was the cathode. The structures of both the as-cast and hydrided alloys were investigated by light microscopy, electron microscopy and x-ray diffraction. The hydrogen concentration was measured using glow-discharge spectrometry. It was observed that the structures of all the studied alloys contained a significant volume fraction of disperse eutectic mixtures that represented good paths for the inward hydrogen diffusion. The maximum hydrogen mass concentration of 1.6 % was thus achieved in the Mg-26Ni alloy with an almost purely eutectic structure. In thehypoeutectic and hypereutectic alloys the hydrogen concentrations were lower. The mechanism of the hydriding process is discussed in relation to the observed structural features of the alloys.
    Source: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 46, št. 3, maj-jun. 2012, str. 247-250)
    Type of material - article, component part
    Publish date - 2012
    Language - english
    COBISS.SI-ID - 934058

    Link(s):

    http://mit.imt.si/Revija/
    Digitalna knjižnica Slovenije - dLib.si

source: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 46, št. 3, maj-jun. 2012, str. 247-250)

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