Process for producing monocore precursor Nb.sub.3 Sn superconduc

Details Process for producing monocore precursor Nb.sub.3 Sn superconduc Process for producing monocore precursor Nb.sub.3 Sn superconduc

1989-06-06

1990-11-27

Morris, Theodore

Metal treatment

Compositions

Heat treating

428614, 428930, 29599, H01L 3900, H01L 3924

Patent

active

049733656

ABSTRACT:
The process for preparing a precursor Nb.sub.3 Sn superconductor wire first assembling a billet comprising Nb rods surrounded by Cu material. A barrier material such as Nb is placed around the Cu and an outer stabilizer tube encases the billet. The billet is then preferably hot compacted after which it is extruded at an elevated temperature. A Sn rod is placed in the center of the billet and the entire composite is then drawn and twisted to the final size desired.

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B. A. Zeitlin, G. M. Ozeryansky, and K. Hemachalam, "An Overview of the IGC Internal Tin Nb.sub.3 Sn Conductor", IEEE Trans. on Mag., vol. 21, No. 1, Mar. 1985.
R. E. Schwall, G. M. Ozeryansky, D. W. Hazelton, S. F. Cogan, and R. M. Rose, "Properties and Performance of High Current Density Sn-Core Process MF Nb.sub.3 Sn", IEEE Transactions on Magnetics, vol. Mag. 19, No. 3, May 1983, pp. 1135-1138.
D. R. Dietderich, W. V. Hassenzahl, and J. W. Morris, Jr., "The Relationship Between Critical Current and Microstructure of Internal Tin Wire", 1985 ICMC, Cambridge, Mass.
D. W. Hazelton, G. M. Ozeryansky, M. S. Walker, B. A. Zeitlin, K. Hemachalam, E. N. C. Dalder, and L. Summers, "Internal Tin Process Nb.sub.3 Sn Superconductors for 18 Tesla*", 1985 ICMC, Cambridge, Mass.

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