Investigation of multifilamentary Nb3Sn strand for ITER by internal Sn process
2006; Elsevier BV; Volume: 445-448; Linguagem: Inglês
10.1016/j.physc.2006.05.034
ISSN1873-2143
AutoresP.X. Zhang, Ling Zhou, X.D. Tang, C.G. Li, Yali Wu, K. Li, Yan Guo, Munan Yang, Yan Feng, X.H. Liu, P.D. Weng, Yanjun Lü,
Tópico(s)Fusion materials and technologies
ResumoBy internal Sn process we have successfully fabricated the multifilamentary Nb3Sn strand with a diameter of 0.79 mm, which has 5616–6270 filaments. A two-step heat treatment was used for the Nb3Sn strands. The first step is related to bronzing process between Cu and Sn at a temperature range of 200–600 °C, whereas the second step for the formation of superconducting Nb3Sn phase at 600–800 °C. A non-Cu Jc (12 T, 4.2 K) value of 1087 A/mm2 has been obtained. The microstructure and transport property of strands have been discussed.
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