MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Non-Isothermal Decomposition of As-Received and Oxidised TiH2 Powders
Seksak AsavavisithchaiVictor H. LopezAndrew R. Kennedy
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2007 Volume 48 Issue 10 Pages 2712-2714

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Abstract

As-received and oxidised TiH2 powders have been characterised using differential scanning calorimetry, thermogravimetry and mass spectrometry. The activation energy for hydride decomposition was determined and was found to increase slightly (from 119 kJ/mol to 134 kJ/mol) after oxidation. These values are much higher than those for hydrogen diffusion (typically 50 kJ/mol) indicating that the rate of hydrogen release, before and after oxidation, is controlled by detrapping.

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© 2007 The Japan Institute of Metals and Materials
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