Thermal analysis investigation of hydriding properties of nanocrystalline Mg-Ni- and Mg-Fe-based alloys prepared by high-energy ball milling

Berlouis, L.E.A. and Cabrera, E. and Hall-Barientos, E. and Hall, P.J. and Dodd, S.B. and Morris, S. and Imam, M.A. (2001) Thermal analysis investigation of hydriding properties of nanocrystalline Mg-Ni- and Mg-Fe-based alloys prepared by high-energy ball milling. Journal of Materials Research, 16 (1). pp. 45-57. ISSN 0884-2914

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Abstract

The hydrogen loading characteristics of nanocrystalline Mg, Mg–Ni (Ni from 0.1 to 10 at.%), and Mg–Fe (Fe from 1 to 10 at.%) alloys in 3 MPa H2 were examined using high pressure differential scanning calorimetry and thermogravimetric analysis. All samples showed rapid uptake of hydrogen. A decrease in the onset temperature for hydrogen absorption was observed with increasing Ni and Fe alloy content, but the thermal signatures obtained suggested that only Mg was involved in the hydriding reaction; i.e., no clear evidence was found for the intermetallic hydrides Mg2NiH4 and Mg2FeH6. Hydrogen loading capacity decreased with temperature cycling, and this was attributed to a sintering process in the alloy, leading to a reduction in the specific surface available for hydrogen absorption.

ORCID iDs

Berlouis, L.E.A. ORCID logoORCID: https://orcid.org/0000-0002-7217-1680, Cabrera, E., Hall-Barientos, E., Hall, P.J., Dodd, S.B., Morris, S. and Imam, M.A.;
  • Item type:Article
    ID code:37357
    Dates:
    Date
    Event
    1 January 2001
    Published
    Keywords:thermal analysis, ball milling, thermogravimetric analysis, hydrogen, Chemistry, Mechanics of Materials, Materials Science(all), Mechanical Engineering, Condensed Matter Physics
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Faculty of Engineering > Chemical and Process Engineering
    Depositing user: Pure Administrator
    Date deposited:03 Feb 2012 15:56
    Last modified:20 Jan 2021 17:43
    URI:https://strathprints.strath.ac.uk/id/eprint/37357
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