THE MECHANISM OF HYDROGEN-INDUCED AMORPHIZATION IN INTERMETALLIC COMPOUNDS

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In this article, the amorphization mechanisms of intermetallic compounds by hydrogen absorption are discussed on the basis of reported experimental results. It is found that there are two different modes for amorphization. One is a gradual and thermally activated process, while the other is a strain-induced reaction during hydrogen absorption. As factors affecting the amorphization modes, the hydrogen concentration and the elastic property of the compound are discussed. Of these two factors the elastic property of the compound plays a key role on the amorphization. When an elastic strain exceeding the elastic limit was imposed on the compound, the crystal lattice was not deformed plastically but collapsed into the amorphous state because the brittleness of the compound did not permit plastic deformation.
Publisher
ELSEVIER SCIENCE SA
Issue Date
1992-08
Language
English
Article Type
Article
Keywords

LAVES PHASES; METALLIC GLASSES; ABSORPTION; HYDRIDE; CERU2

Citation

JOURNAL OF ALLOYS AND COMPOUNDS, v.187, no.1, pp.1 - 7

ISSN
0925-8388
URI
http://hdl.handle.net/10203/57431
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