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

Stanislaw M. Filipek, I. Bakonyi, Andrzej Szummer

Research output: Contribution to journalArticle

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

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Amorphous alloys
Hydrogen
Crystalline materials
Acoustic impedance
Thermoelectric power
Transition Elements
Brittleness
Nickel
Hydrides
Desorption

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Absorption of hydrogen in Zr based amorphous alloys under high pressures of gaseous hydrogen. / Filipek, Stanislaw M.; Bakonyi, I.; Szummer, Andrzej.

In: Journal of Alloys and Compounds, Vol. 293, 20.12.1999, p. 7-9.

Research output: Contribution to journalArticle

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