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International Journal of Applied Mechanics and Engineering

Tytuł artykułu

Effect of surface and bulk properties on hydrogen absorption and desorption in NiZr metallic glasses

Autorzy Vehovszky, B.  Balla, S. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN After previous examinations in the field of Ni-Zr based hydrogen absorbing glassy alloys, this paper details some surface and bulk processes, which have strong influence in H-charging and discharging properties. It is a usual problem with hydrogen storing materials that imperfect surface and bulk preparation (activation) hinders free movement of hydrogen, thus we can use only a small proportion of theoretical storing capacity. The surface oxide layer is usually a fundamental point: it is often impermeable for hydrogen. It is also true for Ni-Zr based glassy alloys, so the surface of samples has to be activated first by etching in an adequate acetic solution. Another restricting process is the diffusion of H-atoms in bulk metal. This problem is also examined and discussed together with some special measurements that made us able to study the above-mentioned effects easily.
Słowa kluczowe
PL magazynowanie wodoru   szkła metaliczne  
EN hydrogen storage   Ni-Zr based glassy alloy   surface oxide layer   surface and bulk activation  
Wydawca Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
Czasopismo International Journal of Applied Mechanics and Engineering
Rocznik 2010
Tom Vol. 15, no 2
Strony 463--468
Opis fizyczny Bibliogr. 6 poz., rys., wykr.
autor Vehovszky, B.
autor Balla, S.
  • Budapest University of Technologies and Economics Bertalan L. u. 2, Z 608, 1111 Budapest, HUNGARY,
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Hao Gu, Yunfeng Zhu and Liquan Li (2009): Hydrogen storage properties of Mg–30 wt.% LaNi5 composite prepared by hydriding combustion synthesis followed by mechanical milling (HCS + MM). – International Journal of Hydrogen Energy, vol.34, No.3, pp.1405-1410.
Manchester D. and Khatamian D. (1988): Mechanis for activation of intermetallic hydrogen absorbers. – Mat. Sci. For., vol.31, pp.261-296.
Shang C.X., Bououdina1 M., Song Y. and Guo Z.X. (2004): Mechanical alloying and electronic simulations of (MgH2+M) systems (M=Al, Ti, Fe, Ni, Cu and Nb) for hydrogen storage. – International Journal of Hydrogen Energy, vol.29, pp.7380.
Vehovszky B. and Balla S. (2008): The effect of hydrogen charging and discharging in Zr(Ni,Pd,Pt,Cu) glasses. – Materials Engineering, Žilina, vol.15, No.2a, pp.1-6, ISSN 1335-0803.
Vehovszky B. and Balla S. (2009): Resistometric and volumetric monitoring of hydrogen-absorption-desorption processes in Ni-Zr based metallic glasses. – Journal of Machine Manufacturing, vol. XLIX, Issue E3-E5, pp.35-38, HU ISSN 0016-8580, Budapest.
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