TY - JOUR
T1 - New fabrication process of Cu–Nb composite for internal reinforcement of Nb3sn wires
AU - Oguro, H.
AU - Awaji, S.
AU - Watanabe, K.
AU - Sugimoto, M.
AU - Tsubouchi, H.
N1 - Funding Information:
Acknowledgements This work is supported by Adaptable and Seamless Technology Transfer Program through target-driven R&D, JST, Japan.
Publisher Copyright:
© Springer Science+Business Media New York 2012.
PY - 2013/5
Y1 - 2013/5
N2 - We developed Cu–20vol%Nb wires, for the reinforcement and stabilizing of Nb3Sn wires, using a new Nb rod process. The electrical and mechanical properties of the CuNb wires prepared by different processes were measured to assess their suitability as reinforcing stabilizers for Nb3Sn. All wires were heat-treated at 670 °C, which is the temperature required for formation of Nb3Sn. After heat treatment, the mechanical properties of Nb-rod-processed CuNb were superior to those of in-situ-processed CuNb wires. The residual resistance ratio of the Nb-rod-processed CuNb was 64, and its magnetoresistivity was 0.16 μΩcm at 4.2 K and 15 T. These properties indicate that the new CuNb wire is suitable as a reinforcing stabilizer for using a high field, wide bore, superconducting magnet, such as the 20 T superconducting magnet with 400 mm room temperature bore being planned in Japan.
AB - We developed Cu–20vol%Nb wires, for the reinforcement and stabilizing of Nb3Sn wires, using a new Nb rod process. The electrical and mechanical properties of the CuNb wires prepared by different processes were measured to assess their suitability as reinforcing stabilizers for Nb3Sn. All wires were heat-treated at 670 °C, which is the temperature required for formation of Nb3Sn. After heat treatment, the mechanical properties of Nb-rod-processed CuNb were superior to those of in-situ-processed CuNb wires. The residual resistance ratio of the Nb-rod-processed CuNb was 64, and its magnetoresistivity was 0.16 μΩcm at 4.2 K and 15 T. These properties indicate that the new CuNb wire is suitable as a reinforcing stabilizer for using a high field, wide bore, superconducting magnet, such as the 20 T superconducting magnet with 400 mm room temperature bore being planned in Japan.
KW - CuNb composite
KW - Magneto-resistivity
KW - Mechanical properties
KW - Nb3Sn wire
KW - Residual resistance ratio
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U2 - 10.1007/s10948-012-2031-1
DO - 10.1007/s10948-012-2031-1
M3 - Article
AN - SCOPUS:84921459113
VL - 26
SP - 2099
EP - 2101
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
SN - 1557-1939
IS - 5
ER -