Materials Transactions Online

Materials Transactions, Vol.52 No.04 (2011) pp.598-601
© 2011 The Japan Institute of Metals

Structural and Hydrogen Desorption Properties of Aluminum Hydride

Kazutaka Ikeda1, Hidetoshi Ohshita1, Naokatsu Kaneko1, Junrong Zhang1, Masao Yonemura1, Toshiya Otomo1, Kentaro Suzuya2, Hiroshi Yukawa3, Masahiko Morinaga3, Hai-Wen Li4, Satoshi Semboshi4 and Shin-ichi Orimo4

1Institute of Materials Structure Science, KEK, Tsukuba 305-0801, Japan
2J-PARC Center, Japan Atomic Energy Agency, Naka-gun, Ibaraki 319-1195, Japan
3Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
4Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

The structural and hydrogen/deuterium desorption properties of AlH3/AlD3 were investigated by Raman spectroscopy, high-intensity X-ray/neutron diffraction, and thermogravimetric analysis. The latter revealed that more than 9.6 mass% of hydrogen/18.1 mass% of deuterium desorbs from AlH3/AlD3, respectively. The presence of χ-Al2O3 on the surface may prevent the hydrogen/deuterium desorption reaction of AlH3/AlD3 to Al at room temperature.

(Received 2010/10/25; Accepted 2011/1/14; Published 2011/3/2)

Keywords: hydrogen, hydride, aluminum, X-ray diffraction, neutron diffraction

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