Abstract
Effects of tantalum addition to niobium filaments and tin contents in bronze matrix on the critical current density (Jc) of Nb3Sn superconducting wires manufactured by the bronze process were investigated in order to improve the Jc in the high magnetic fields. In the results using the bronze composition of Cu-13wt.%Sn-0.3wt.%Ti, the Jc shows a peak for 1 wt.% of tantalum content in the niobium filament. On the other hand, Jc of samples with Cu-14wt.%Sn-0.3wt.%Ti is almost 1.7 times higher than that with Cu-13wt.%Sn-0.3wt.%Ti. From these findings, we manufactured a multifilamentary prototype (Nb,Ti,Ta)3Sn conductor made of Nb-1.0wt.%Ta and Cu-14wt.%Sn-0.3wt.%Ti. The non Cu Jc of the conductor was 701 A/mm2 at 12 T and 51 A/mm2 at 21 T for the heat treatment temperature of 650 °C.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
S. T. Wang, R. Wahrer, C. J. Chen, T. S. Tenforde, R. M. Scanlan, J. Ekin and S. Bray, “Evaluation of Nb3Sn superconductors for using in a 23.5T NMR magnet.”, IEEE Trans. Mag., 30, 2344 (1994).
S. Pourrahimi, M. J. Leupold, V. Stejskal, J. E. C. Williams, T. S. Tenforde, J. Ekin, S. Bray and S. T. Wang, “Conductors for a 1GHz superconducting magnet.”, IEEE Trans. Mag, 30, 2354 (1994).
M. Suenaga, K. Aihara, K. Kaiho and T. S. Luhman, “Superconducting Properties of (Nb,Ta)3Sn Wires Fabricated by the Bronze Process.”, Advances in Cryogenic Engineering Material, 26, 442 (1979).
K. Tachikawa, H. Sekine and Y. Iijima, “Composite-Processed Nb3Sn with titanium addition to the matrix.”, J. Appl. Phys., 53, 5354 (1982).
V. Ya. Sverdlov, M. A. Tikhonovsky, G. F. Tikhinsky, A. A. Kondratov, T. Yu. Rudycheva, E. Yu. Klimenko and S. I. Novikov, “Critical Currents of Multifilamentary Nb3Sn Superconductors Manufactured by Using Cu-16%Sn and Cu-13%Sn-l%Ti Bronze.”, Proc. 7th Int. Workshop Crit. Curr. Supercond. 1994., 585 (1994).
G. Iwaki, S. Sakai, K. Kamata, K. Sasaki, S. Inaba, H. Moriai and K. Yoshida, “Development of Bronze-Processed (Nb,Ti) 3Sn Superconducting Wires for Center Solenoid Model Coil of ITER.”, IEEE Trans. Appl. Supercond., 3, 998 (1993).
G. Rupp, K. Wohlleben and E. Springer, “Filament-size dependent critical current of multifilamentary Nb3Sn conductor.”, IEEE Trans. Mag. 17, 1622 (1981).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1996 Springer Science+Business Media New York
About this chapter
Cite this chapter
Miyazaki, T., Fukumoto, Y., Matsukura, N., Miyatake, T., Shimada, M., Kobayashi, N. (1996). Improvement of Critical Current Density of Bronze Processed Nb3Sn Superconducting Wire. In: Summers, L.T. (eds) Advances in Cryogenic Engineering Materials . Advances in Cryogenic Engineering Materials , vol 42. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9059-7_179
Download citation
DOI: https://doi.org/10.1007/978-1-4757-9059-7_179
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-9061-0
Online ISBN: 978-1-4757-9059-7
eBook Packages: Springer Book Archive