Hydrogenation characteristics of Ti2NiOx compounds (0 ≤ x < 0.5)

M. H. Mintz, Z. Hadari, M. P. Dariel

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25 Scopus citations

Abstract

The hydrogenation characteristics of Ti2NiOx compounds (0 ≤ x < 0.5) were investigated using combined TG-DTA techniques. The presence of oxygen in Ti2Ni affects the hydrogen uptake capacity, the stability of the hydrides and the phase transition behavior of the corresponding hydrogen-containing compounds. Oxygen atoms occupy some of the available hydrogen interstitial sites and also influence the electron concentration, and possibly they reduce the enthalpy of formation of the hydrides. The cooling rate affects the maximum hydrogen uptake at room temperature, with rapid cooling giving the highest hydrogen content. These rate effects are tentatively explained on the basis of a model involving two types of hydrogen-occupied interstitial sites.

Original languageEnglish
Pages (from-to)181-191
Number of pages11
JournalJournal of the Less-Common Metals
Volume63
Issue number2
DOIs
StatePublished - 1 Jan 1979

ASJC Scopus subject areas

  • Engineering (all)

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