Interaction of hydrogen with an Mg–Al alloy

Authors :: Andreasen, A.
Sørensen, M.B.
Burkarl, R.
Møller, B.
Molenbroek, A.M.
Pedersen, A.S.
Andreasen, J.W.
Nielsen, M.M.
Jensen, T.R.
Source :: Journal of Alloys & Compounds. Dec2005, Vol. 404-406, p323-326. 4p.
Publication Year :: 2005
Abstract: Abstract: The interaction of hydrogen with an Mg–Al alloy pre-exposed to air have been studied with in situ time resolved X-ray powder diffraction. Phase fractions as a function of time are derived from series of consecutive diffraction patterns allowing kinetic analysis. The apparent activation energy for dehydrogenation of the Mg–Al alloy is found to be 160 kJ/mol. This is not significantly higher than for pure and fully activated Mg. It is suggested that the addition of Al improves the resistance towards oxygen contamination. [Copyright &y& Elsevier]