[Kovove materialy - Metallic materials]
    Fri - March 29, 2024 - 10:14 No. of hits : 1736647 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 45 (2007), Issue 6

Hydrogen diffusion in hydrogenated Mg and Mg-Mg2Ni eutectic alloy
CERMAK, J., KRAL, L., STLOUKAL, I.
vol. 45 (2007), no. 6, pp. 305 - 312

Abstract
Time dependence of total amount of hydrogen desorbed from hydrogen-charged Mg and eutectic Mg-Mg2Ni (23.5 wt. % Ni) alloy was measured at temperatures from interval 552 – 723 K. Experiments were carried out well below the equilibrium pressure, where these hydrides – perspective as solid hydrogen storage media – are unstable and the desorption process is controlled mainly by diffusion of hydrogen in respective hydride (MgH2 and/or Mg2NiH4). Hydrogen diffusion coefficients were evaluated from desorption curves and hydrogen diffusion coefficient along interphase boundary MgH2/Mg2NiH4 was estimated from results obtained with the eutectic alloy.

Key words
intermetallic phases, magnesium, magnesium alloys, diffusion, hydrogen diffusion, hydrogen storage

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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