Absorption of hydrogen in Zr based amorphous alloys under high pressures of gaseous hydrogen

Stanislaw M. Filipek, Imre Bakonyi, Andrzej Szummer

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

Amorphous and crystalline Ni91Zr9, and Cu50Zr50 were exposed to gaseous hydrogen at pressures exceeding 1 GPa(H2). The in situ measurements of relative electrical resistance and thermoelectric power as a function of hydrogen pressure were carried out for amorphous and crystalline Ni91Zr9 samples. Similar measurements were not possible for Cu50Zr50 alloys due to their brittleness caused by the hydrogen uptake. The change of electrical resistance for crystalline bcc Ni91Zr9 samples clearly indicated the transformation into the hydride phase at hydrogen pressure near 0.67 GPa(H2). The behaviour of the amorphous Ni91Zr9 was different showing a continuous character of hydrogen absorption and desorption. The hydrogen absorption slightly reduced the initial positive value of thermoelectric power of both crystalline and amorphous alloys according to the general tendency observed for nickel alloyed with transition elements belonging to the left half of the transition group. The values of hydrogen concentration in the alloys exposed to the high hydrogen pressure are given.

Original languageEnglish
Pages (from-to)7-9
Number of pages3
JournalJournal of Alloys and Compounds
Volume293
DOIs
Publication statusPublished - Dec 20 1999
EventProceedings of the 1998 International Symposium on Metal-Hydrogen Systems - Fundamentals and Applications (MH98) - Hangzhou, China
Duration: Oct 4 1998Oct 9 1998

ASJC Scopus subject areas

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

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