Hydrogenation of Al<SUB>3</SUB>Ti at High Pressure and High Temperature

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  • Saitoh Hiroyuki
    Condensed Matter Science Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency
  • Machida Akihiko
    Condensed Matter Science Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency
  • Katayama Yoshinori
    Condensed Matter Science Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency
  • Aoki Katsutoshi
    Condensed Matter Science Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency

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  • Hydrogenation of Al3Ti at high pressure and high temperature

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Abstract

An Al3Ti alloy was immersed in hydrogen at high pressures and high temperatures. An anomalous expansion of the Al3Ti metal lattice was observed by in situ powder X-ray diffraction measurements at 625°C and 10 GPa, suggesting that Al3Ti is hydrogenated to form Al3TiHx. The hydrogen content is roughly estimated to be x∼0.4. However, the formed hydride phase is dehydrogenated during depressurization, and cannot be recovered at ambient conditions.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 52 (4), 602-604, 2011

    The Japan Institute of Metals and Materials

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