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Formation of metal hydrides by mechanical alloying

journal contribution
posted on 01.02.1995, 00:00 authored by Ying (Ian) ChenYing (Ian) Chen, J S Williams
Metal hydrides (TiH 1.9 , δ-ZrH 1.66 and MgH 2 ) have been synthesized by mechanical alloying of metal powders in a hydrogen atmosphere at room temperature. The milling process was monitored using H 2 pressure measurement. The sharp decrease in H 2 pressure during milling indicates a high rate of H 2 absorption into the metal powders. X-ray diffraction analysis of as-milled powders shows convertion to hydrides at short milling times (less than 6 h). Decomposition of the so-formed metal hydrides has been observed during thermal analysis. The results indicate that pulverization and deformation processes occurring during high energy ball impacts play a major role in the hydriding reaction.

History

Journal

Journal of alloys and compounds

Volume

217

Issue

2

Pagination

181 - 184

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0925-8388

eISSN

1873-4669

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1995, Elsevier