Thermal decomposition of AlH3 studied by in situ synchrotron X-ray diffraction and thermal desorption spectroscopy

The thermal decomposition of alane was investigated by application of synchrotron X-ray diffraction (SR-XRD) and thermal desorption spectroscopy (TDS). Two polymorphs were studied, alpha- and gamma-AlH3. Activation energies, anisotropic volume expansions, and phase transformation paths were found. I...

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Bibliographic Details
Published in:Journal of alloys and compounds 2007-10, Vol.446-447, p.280-289
Main Authors: Maehlen, J.P., Yartys, V.A., Denys, R.V., Fichtner, M., Frommen, Ch, Bulychev, B.M., Pattison, P., Emerich, H., Filinchuk, Y.E., Chernyshov, D.
Format: Article
Language:English
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Summary:The thermal decomposition of alane was investigated by application of synchrotron X-ray diffraction (SR-XRD) and thermal desorption spectroscopy (TDS). Two polymorphs were studied, alpha- and gamma-AlH3. Activation energies, anisotropic volume expansions, and phase transformation paths were found. In addition, the crystal structure data, including structure of hydrogen sublattice, and small charge transfer from the aluminium towards the hydrogen sites were observed during a high-resolution SR-XRD study of alpha-AlH3.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2006.11.199