PROCESSING OF HIGH-PERFORMANCE Nb3Sn WIRES THROUGH A NEW DIFFUSION REACTION USING Sn BASED ALLOYS

被引：0
|
作者：
Tachikawa, K. [1 ]
Sasaki, H. [1 ]
Yamaguchi, M. [1 ]
Hayashi, Y. [1 ]
Nakata, K. [1 ]
Takeuchi, T. [2 ]
机构：
[1] Tokai Univ, Fac Engn, Kanagawa 2591292, Japan
[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
ADVANCES IN CRYOGENIC ENGINEERING (MATERIALS), VOL 56: TRANSACTIONS OF THE INTERNATIONAL CRYOGENIC MATERIALS CONFERENCE - ICMC | 2010年 / 1219卷
关键词：
Nb3Sn; Sn-Ta alloy; Sn-B alloy; Jelly Roll process; Multi-rod process; Microstructure; Superconducting performance;
D O I：
10.1063/1.3402297
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tightly consolidated Sn-Ta and Sn-B based alloys have been prepared by the reaction among constituent metal powders at 750-775 degrees C. Sn-Ta and Sn-B based alloys exhibit quite similar microstructures. A small amount of Ti addition seems to improve the bonding between Ta or B particles and Sn matrix. Nb3Sn wires have been fabricated by the Jelly Roll (JR) and Multi-rod (MR) process using Sn based alloy sheet and rod, respectively Thick Nb3Sn layers with nearly stoichiometric A15 composition are synthesized through a new diffusion mechanism between Nb and Sn based alloy. B-c2 (4 2K)'s of 26.9T (mid) and 26.5T (mid) have been obtained in the JR and MR processed wires, respectively, using Sn-Ta based alloy. These wires exhibit enough non-Cu J(c) to be used above 20T and 4 2K. T-c of JR wires using Sn-B based sheet is 18.14K (offset) which is slightly higher than that of wires using Sn-Ta based sheet.
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页码：165 / +
页数：2
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