Hydriding kinetic properties in massive Zr(AlxCo1-x)2 samples as a function of the Al content

M. Bereznitsky, Izi Jacob, J. Bloch, M. H. Mintz

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


The hydriding kinetics of the Zr(AlxCo1-x)2 (0.1≤x≤0.5) system was monitored for massive rectangular parallelepiped samples utilizing hydrogen pressures up to 80 atm and temperatures between 238 K and 293 K. The use of temperatures higher than 20 °C was restricted in most cases due to the appearance of self-heating effects. The experimental data were fit to a shrinking core model. The apparent activation energies, Ea, for each composition are derived from the temperature dependence of the reaction rate constants at given P/Peq ratios, where P is the applied experimental hydrogen pressure and Peq is the equilibrium pressure at a given temperature. A minimum of Ea was detected for the x=0.25 compound. Similar behavior has been also observed in other Al-containing pseudobinary compounds, but it seems that this effect is most prominent in the Zr(AlxCo1-x)2 system.

Original languageEnglish
Pages (from-to)316-320
Number of pages5
JournalJournal of Alloys and Compounds
Issue number1-2
StatePublished - 3 Feb 2003


  • Gas-solid reactions
  • Hydrogen absorbing materials
  • Kinetics
  • Transition metal compounds

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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