Critical current densities and magnetic hysteresis losses in submicron filament bronze-processed Sb,Sn wires

Conference · Fri Mar 01 04:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5767516

Kamata, K; Sakai, S ^[1]; Tachikawa, K; Taniquchi, T; Ajioka, T ^[2]; Hatakeyama, H ^[3]

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1. Hitachi Cable, Ltd., Tokyo (Japan)
2. Tokai Univ., 1117 Kitakaname, Hiratuka-shi, Kanagawa-ken 259-12 (JP)
3. Engineering Research Association for Superconductive Generation Equipment and Materials, Umeda UN Bldg., 5-14-10 Nishitenma, Kita-ku, Osaka-shi 530 (JP)

This paper reports on submicron filament bronze-processed multifilamentary Nb{sub 3}Sn wires with Cu-5at%Sn matrix and Nb or Nb alloy cores. The Nb alloy cores contained each of 1at%Zr, Ti, Hf or Ta. Among the peripheral Cu stabilizer type wires, the Nb-1Ta core wire showed the highest non Cu area critical current density Jc of 3 {times} 10{sup 4} A/cm{sup 2} at 12 T after an optimum heat treatment, in spite of its relatively low Sn concentration in the matrix. The deformation of Nb cores into ribbon like shapes was apparently suppressed by the 1 at% addition of Ti, Hf or Ta. The values of Jc per unit magnetic hysteresis loss for the Ti, Hf and Ta alloyed Nb core wires have been evaluated to be higher than that for the pure Nb core wire.

• OSTI ID: 5767516
• Report Number(s): CONF-900944--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360107* -- Metals & Alloys-- Superconducting Properties-- (1992-)
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AC LOSSES
ALLOYS
COPPER
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
ELEMENTS
ENERGY LOSSES
FILAMENTS
HAFNIUM
HEAT TREATMENTS
HYSTERESIS
LOSSES
MATRICES
METALS
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
SUPERCONDUCTING WIRES
TANTALUM
TIN ALLOYS
TITANIUM
TRANSITION ELEMENTS
WIRES
ZIRCONIUM