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Multifilamentary Nb-Nb/sub 3/Sn composite by liquid infiltration method: superconducting metallurgical, and mechanical properties

Journal Article · · IEEE Trans. Magn.; (United States)
A rapid solid-liquid reaction mechanism has been used to form A15 Nb/sub 3/Sn in the liquid-infiltration processed NbSn wire. Small, equiaxed A15 grains across the fine reacted filaments of 0.2-1.0 ..mu..m thickness were revealed with the transmission electron microscopy studies. A uniform Sn concentration near the stoichiometry was found in the A15 region. High inductive T /SUB c/ 's of 17.9K with sharp transition widths (<0.3K) and excellent overall J /SUB c/ 's of 10/sup 4/ A/cm/sup 2/ at 19T and 4.2K were achieved. Mechanical properties of the reacted wire are no worse than those of typical commercial bronze-process Nb/sub 3/Sn conductors, and epsilon /SUB irrev/ is slightly higher.
Research Organization:
Bell Laboratories, Murray Hill, NJ 07974
OSTI ID:
5626127
Journal Information:
IEEE Trans. Magn.; (United States), Journal Name: IEEE Trans. Magn.; (United States) Vol. 19:3; ISSN IEMGA
Country of Publication:
United States
Language:
English

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