Advanced (Nb,Ti) 3Sn superconducting wire with highly strengthened and good conductive CuNb composite stabilizer

K. Watanabe; M. Motokawa; T. Onodera; K. Noto; K. Katagiri; T. Saito

Advanced (Nb,Ti) ₃Sn superconducting wire with highly strengthened and good conductive CuNb composite stabilizer

K. Watanabe, M. Motokawa, T. Onodera, K. Noto, K. Katagiri, T. Saito

High Field Laboratory for Superconducting Materials

Research output: Contribution to journal › Conference article › peer-review

10 Citations (Scopus)

Abstract

We developed advanced (Nb,Ti) ₃Sn multifilamentary superconducting wires with 1 mm in diameter and 3 km in length, which were reinforced and stabilized with Cu-20wt.%Nb composite, CuNb/(Nb,Ti) ₃Sn. In comparison with practical (Nb,Ti) ₃Sn wires with conventional Cu stabilizer, Cu/(Nb,Ti) ₃Sn, it is found that a 0.2% proof stress of 240 MPa for CuNb/(Nb,Ti) ₃Sn after heat-treatment at 670°C for 200 h is twice as strong as that for Cu/(Nb,Ti) ₃Sn. CuNb composite has good thermal conductivity of 200 W/m/K at 4.2 K and low resistivity of 0.16 μΩ·cm at 4.2 K and 15 T. The minimum quench energy of 2.7 mJ at 80% of the critical current at 14 T for CuNb/(Nb, Ti) ₃Sn is a factor of two smaller than for Cu/(Nb,Ti) ₃Sn, while the normal zone propagation velocity of 2 m/s remains the same.

Original language	English
Pages (from-to)	561-566
Number of pages	6
Journal	Materials Science Forum
Volume	308-311
Publication status	Published - 1999 Jan 1
Event	Proceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98 - Dresden, Ger Duration: 1998 Oct 26 → 1998 Oct 29

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

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title = "Advanced (Nb,Ti) 3Sn superconducting wire with highly strengthened and good conductive CuNb composite stabilizer",

abstract = "We developed advanced (Nb,Ti) 3Sn multifilamentary superconducting wires with 1 mm in diameter and 3 km in length, which were reinforced and stabilized with Cu-20wt.%Nb composite, CuNb/(Nb,Ti) 3Sn. In comparison with practical (Nb,Ti) 3Sn wires with conventional Cu stabilizer, Cu/(Nb,Ti) 3Sn, it is found that a 0.2% proof stress of 240 MPa for CuNb/(Nb,Ti) 3Sn after heat-treatment at 670°C for 200 h is twice as strong as that for Cu/(Nb,Ti) 3Sn. CuNb composite has good thermal conductivity of 200 W/m/K at 4.2 K and low resistivity of 0.16 μΩ·cm at 4.2 K and 15 T. The minimum quench energy of 2.7 mJ at 80% of the critical current at 14 T for CuNb/(Nb, Ti) 3Sn is a factor of two smaller than for Cu/(Nb,Ti) 3Sn, while the normal zone propagation velocity of 2 m/s remains the same.",

author = "K. Watanabe and M. Motokawa and T. Onodera and K. Noto and K. Katagiri and T. Saito",

year = "1999",

month = jan,

day = "1",

language = "English",

volume = "308-311",

pages = "561--566",

journal = "Materials Science Forum",

issn = "0255-5476",

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note = "Proceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98 ; Conference date: 26-10-1998 Through 29-10-1998",

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TY - JOUR

T1 - Advanced (Nb,Ti) 3Sn superconducting wire with highly strengthened and good conductive CuNb composite stabilizer

AU - Watanabe, K.

AU - Motokawa, M.

AU - Onodera, T.

AU - Noto, K.

AU - Katagiri, K.

AU - Saito, T.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - We developed advanced (Nb,Ti) 3Sn multifilamentary superconducting wires with 1 mm in diameter and 3 km in length, which were reinforced and stabilized with Cu-20wt.%Nb composite, CuNb/(Nb,Ti) 3Sn. In comparison with practical (Nb,Ti) 3Sn wires with conventional Cu stabilizer, Cu/(Nb,Ti) 3Sn, it is found that a 0.2% proof stress of 240 MPa for CuNb/(Nb,Ti) 3Sn after heat-treatment at 670°C for 200 h is twice as strong as that for Cu/(Nb,Ti) 3Sn. CuNb composite has good thermal conductivity of 200 W/m/K at 4.2 K and low resistivity of 0.16 μΩ·cm at 4.2 K and 15 T. The minimum quench energy of 2.7 mJ at 80% of the critical current at 14 T for CuNb/(Nb, Ti) 3Sn is a factor of two smaller than for Cu/(Nb,Ti) 3Sn, while the normal zone propagation velocity of 2 m/s remains the same.

AB - We developed advanced (Nb,Ti) 3Sn multifilamentary superconducting wires with 1 mm in diameter and 3 km in length, which were reinforced and stabilized with Cu-20wt.%Nb composite, CuNb/(Nb,Ti) 3Sn. In comparison with practical (Nb,Ti) 3Sn wires with conventional Cu stabilizer, Cu/(Nb,Ti) 3Sn, it is found that a 0.2% proof stress of 240 MPa for CuNb/(Nb,Ti) 3Sn after heat-treatment at 670°C for 200 h is twice as strong as that for Cu/(Nb,Ti) 3Sn. CuNb composite has good thermal conductivity of 200 W/m/K at 4.2 K and low resistivity of 0.16 μΩ·cm at 4.2 K and 15 T. The minimum quench energy of 2.7 mJ at 80% of the critical current at 14 T for CuNb/(Nb, Ti) 3Sn is a factor of two smaller than for Cu/(Nb,Ti) 3Sn, while the normal zone propagation velocity of 2 m/s remains the same.

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M3 - Conference article

AN - SCOPUS:0032662872

VL - 308-311

SP - 561

EP - 566

JO - Materials Science Forum

JF - Materials Science Forum

SN - 0255-5476

T2 - Proceedings of the 1998 5th International Symposium on Functionally Graded Materials, FGM '98

Y2 - 26 October 1998 through 29 October 1998

ER -

Advanced (Nb,Ti) ₃Sn superconducting wire with highly strengthened and good conductive CuNb composite stabilizer

Abstract

ASJC Scopus subject areas

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