Study on the Growth of Nb3Sn Superconductor in Cu(Sn)/Nb Diffusion Couple

Abstract:

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Nb3Sn growth following the bronze technique, (i.e. by interdiffusion between Cu(Sn) alloy (bronze) and Nb) is one of the important methodologies to produce this superconductor. In this study, we have addressed the confusion over the growth rate of the Nb3Sn phase. Furthermore, a possible explanation for the corrugated layer in the multifilamentary structure is discussed. Kirkendall marker experiments were conducted to study the relative mobilities of the species, which also explained the reason for finding pores in the product phase layer. Based on the parabolic growth constant at different temperatures, the activation energy for the growth is determined. We have further explained the dramatic increase in the growth rate of the product phase by changing just one atomic percentage of Sn in the Cu-Sn bronze alloy.

Info:

Periodical:

Defect and Diffusion Forum (Volumes 297-301)

Edited by:

Andreas Öchsner, Graeme E. Murch, Ali Shokuhfar and João M.P.Q. Delgado

Pages:

467-471

DOI:

10.4028/www.scientific.net/DDF.297-301.467

Citation:

A.K. Kumar et al., "Study on the Growth of Nb3Sn Superconductor in Cu(Sn)/Nb Diffusion Couple", Defect and Diffusion Forum, Vols. 297-301, pp. 467-471, 2010

Online since:

April 2010

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Price:

$35.00

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