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Preparation of La-Mg-Ni Hydrogen Storage Composite Alloys by Mechanical Alloying
Abstract:
LaNi5-xwt%Mg hydrogen storage alloys with different Mg content were made from pure La, Mg and Ni metal powder by mechanical alloying, selecting appropriate ball-milling parameters in 0.4MPa hydrogen atmosphere. The characterizations for hydrogen storage alloy show that a multi-phase alloy composed of MgH2, LaH3, Mg2NiH4 and Ni was obtained, the alloy have two hydrogen desorption temperature range, and the alloy with 25wt% Mg content can desorb hydrogen up to 4.02wt%.
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2707-2712
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Online since:
September 2013
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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