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Metallic Hydrides III: Body-Centered-Cubic Solid-Solution Alloys

Published online by Cambridge University Press:  31 January 2011

E. Akiba and
M. Okada
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Abstract

Hydrogen-absorbing alloys with bcc (body-centered-cubic) structures, such as Ti-V-Mn, Ti-V-Cr, Ti-V-Cr-Mn, and Ti-Cr-(Mo, Ru), have been developed since 1993. These alloys have a higher hydrogen capacity (about 3.0 mass%) than conventional intermetallic hydrogen-absorbing alloys. Generally, bcc metals and alloys exhibit two plateaus in pressure–composition isotherms, but the lower plateau is far below atmospheric pressure at room temperature. Many efforts have been made to increase hydrogen capacity and raise the equilibrium pressure of this lower plateau. The crystal structure and morphology of Laves-phase-related bcc solid-solution alloys are reviewed.

Keywords

bcc structurehydrogen storagemetallic hydridessolid-solution alloys.

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Type
Research Article
Information
MRS Bulletin , Volume 27 , Issue 9: Hydrogen Storage , September 2002, pp. 699 - 703
Copyright
Copyright © Materials Research Society 2002

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