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Kinetic neutron diffraction study of Nb3Sn phase formation in superconducting wires

Al-Jawad, M, Manuel, P, Ritter, C and Kilcoyne, SH 2006, 'Kinetic neutron diffraction study of Nb3Sn phase formation in superconducting wires' , Journal of Physics: Condensed Matter, 18 (4) , pp. 1449-1457.

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Abstract

The kinetics of Nb3Sn phase formation in commercial multifilamentary wires have been studied as a function of time and temperature using time-resolved, in situ neutron diffraction. This work shows that at higher temperatures the Nb3Sn phase forms in a fraction of the recommended annealing time. A temperature-independent Avrami exponent of n = 0.51 ± 0.01 was observed, indicating a diffusion-controlled growth mechanism, and a large apparent activation energy of Ea = 10 ± 1 eV is reported where the energies of nucleation and growth both contribute.

Item Type: Article
Themes: Subjects / Themes > Q Science > QC Physics
Subjects outside of the University Themes
Schools: Colleges and Schools > College of Science & Technology
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Materials & Physics Research Centre
Journal or Publication Title: Journal of Physics: Condensed Matter
Publisher: Institute of Physics
Refereed: Yes
ISSN: 09538984
Depositing User: H Kenna
Date Deposited: 22 Aug 2007 14:02
Last Modified: 20 Aug 2013 16:46
URI: http://usir.salford.ac.uk/id/eprint/306

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