By Topic

Superconducting Properties of {\rm Nb}_{3}{\rm Sn} Wire Fabricated by Diffusion Reaction Between Ag-Sn-Mg Alloy and Nb

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Masayoshi Iwatani ; Univ. of Tokushima, Tokushima, Japan ; Kiyoshi Inoue ; Takao Takeuchi ; Tsukasa Kiyoshi

Mg addition improves T c, B irr, and I c of the Nb3Sn formed by diffusion reaction between Nb and Ag-Sn alloy, when the diffusion reaction is performed below 650 degC. The obtained superconducting properties are similar to those of the bronze-processed Nb3Sn. The formation temperature of Nb3Sn is reduced by the Mg addition. By using OM, SEM, and field emission type EPMA, we could not measure the thickness of Nb3Sn layers, which may be thinner than 0.5 mum. It is not clear that the Mg addition increases the formation rate of Nb3Sn. However, the Nb3Sn layers should have very high J c. The attainable overall J c of the Nb3Sn wire are as high as those of the bronze-processed Nb3Sn wire without Ti and Ta additions, although the optimization of the cross-sectional configuration of Nb and Ag-Sn-Mg in the wire has not yet performed. Therefore the potential of the Nb3Sn conductor made by the new process seems to be very attractive for the practical applications.

Published in:

IEEE Transactions on Applied Superconductivity  (Volume:19 ,  Issue: 3 )