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Analysis of FeTi hydride alloys by thermal analysis, small angle neutron scattering and positron annihilation

Hall, P.J. and Berlouis, L.E.A. and Mackinnon, A.J. and Wilson, J. and Browning, D. and Dodd, S. and Morris, S. and Jones, P. (1997) Analysis of FeTi hydride alloys by thermal analysis, small angle neutron scattering and positron annihilation. Journal of Alloys and Compounds, 253. pp. 195-200. ISSN 0925-8388

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Abstract

Samples of vapour deposited FeTi and electrochemically loaded with hydrogen from LiOH solution have been examined by thermal analysis, positron annihilation and small angle neutron scattering techniques. Thermal analysis shows that the FeTi loads hydrogen without the need for activation although there was not a good correlation between the amount of hydrogen loaded and duration of loading. Positron annihilation and SANS on the untreated sample showed that the alloy was highly disordered in nature and contained a large concentration of vacancy clusters. SANS also showed an increase in the interfacial scattering surface area following hydrogen loading, consistent with an increase in voidage within the structure. Positron annihilation on the other hand suggested a decrease in the concentration of vacancies following hydrogen loading. It was concluded that some of the voids within the structure were filled by hydrogen gas which caused a decrease in the positron lifetime. However, not all of the voids were filled with gas.

Item type: Article
ID code: 17596
Notes: Strathprints' policy is to record up to 8 authors per publication, plus any additional authors based at the University of Strathclyde. More authors may be listed on the official publication than appear in the Strathprints' record.
Keywords: FeTi, small angle neutron scattering, positron annihilation, thermal analysis, Chemical engineering, Materials Chemistry, Mechanics of Materials, Metals and Alloys, Mechanical Engineering
Subjects: Technology > Chemical engineering
Department: Faculty of Engineering > Chemical and Process Engineering
Faculty of Science > Pure and Applied Chemistry
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 13 May 2010 19:28
    Last modified: 05 Sep 2014 00:56
    URI: http://strathprints.strath.ac.uk/id/eprint/17596

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