Production of superconducting Nb sub 3 Sn wire using Nb or Nb(Ti) and Sn(Ga) solid solution powders

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

OSTI ID:6079904

Thieme, C L.H. ^[1]; Foner, S ^[2]

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1. Massachusetts Inst. of Tech., Cambridge, MA (United States). Francis Bitter National Magnet Lab.
2. Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Physics

This paper reports on superconducting Nb{sub 3}Sn wire produced by the powder metallurgy method using Nb or Nb-2.9 at% Ti powder in combination with Sn-x at% Ga powders (x = 3, 4.2, 6.2 and 9.0). Ga additions to the Sn caused considerable solid solution hardening which improved its workability. It made the Nb-Sn(Ga) powder combinations convenient for swaging and extensive wire drawing. Anneals at 950{degrees}C produced wires with an overall J{sub c} of 10{sup 4} A/cm{sup 2} at 21.9 T for wires with both Ti in the Nb and 6.2 at% Ga in the Sn. Comparison of this wire with the best Nb(Ti)-Cu-internal Sn(Ti) shows a higher J{sub c} per A15 areas, especially in fields of 22T and above.

• OSTI ID: 6079904
• 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
360101* -- Metals & Alloys-- Preparation & Fabrication
665412 -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ANNEALING
CRITICAL CURRENT
CURRENT DENSITY
CURRENTS
DISPERSIONS
ELECTRIC CURRENTS
FABRICATION
HEAT TREATMENTS
METALLURGY
MIXTURES
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
POWDER METALLURGY
POWDERS
SOLID SOLUTIONS
SOLUTIONS
SUPERCONDUCTING WIRES
TIN ALLOYS
TITANIUM ALLOYS
WIRES