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Hydrogen permeation behavior of multifilamentary Cu-Nb superconducting composites

TitleHydrogen permeation behavior of multifilamentary Cu-Nb superconducting composites
Publication TypeJournal Article
Year of Publication2010
AuthorsWong T, Suzuki K, Gibson M, Ishikawa K, Aoki K, Jones LL
Journal TitleScripta Materialia
Volume62
Pages582-585
Date Published04/01
ISBN Number1359-6462
Accession NumberISI:000275972200015
Keywordscopper alloys, deformation, ductility, hydrogen diffusion, hydrogen permeation membrane, mechanical-properties, MEMBRANES, metallic superconductors, microstructure, ni alloy, permeability, strength, WIRES
Abstract

The hydrogen permeation behavior of Cu-15 vol% Nb and Cu-20 vol.% Nb alloys which were developed originally for superconducting wires has been investigated. Both the alloys with a microstructure consisting of body-centered cubic Nb (bcc-Nb) filaments and a face-centered cubic Cu matrix exhibited a hydrogen permeability of similar to 2 x 10(-9) mol m(-1) s(-1) Pa-0.5 at 673 K. The samples tested are resistant to hydrogen embrittlement despite the fact that bcc-Nb is susceptible to hydrogen embrittlement. Our work demonstrates that Nb-based multifilamentary alloys are potential candidates for alloy membranes for hydrogen purification. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
URL<Go to ISI>://000275972200015