Hydrogenation of Zr-based metallic glasses and quasicrystals

D. Zander, H. Leptien, U. Köster, N. Eliaz, D. Eliezer

Research output: Contribution to journalConference articlepeer-review

53 Scopus citations

Abstract

Zr-based metallic glasses and quasicrystals were electrochemically charged with hydrogen. Hydrogen absorption/desorption as well as the influence of hydrogen on the formation and stability of quasicrystals were studied by means of X-ray diffraction, electron microscopy, differential scanning calorimetry (DSC) and thermal desorption analysis (TDA). In Zr69.5Cu12Ni11Al7.5 absorption kinetics and storage capacity were found to be better for the quasicrystalline than for the associated amorphous phase. Dissolved hydrogen was observed to play an important role not only in the stability of the quasicrystals, but also in their formation from glassy precursor material. Even hydrogen contents as low as 5 at.% changed the formation as well as the decomposition of the icosahedral quasicrystals: the formation was shifted to higher temperatures whereas decomposition temperatures were lowered. At larger hydrogen contents, changes in both transformations were observed, yet not fully understood.

Original languageEnglish
Pages (from-to)893-897
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume250-252 (II)
DOIs
StatePublished - 1 Aug 1999
EventProceedings of the 1998 10th International Conference on Liquid and Amorphous Metals (LAM-10) - Dortmund, Ger
Duration: 30 Aug 19984 Sep 1998

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