H - Electricity – 01 – B
Patent
H - Electricity
01
B
H01B 13/00 (2006.01) H01B 12/10 (2006.01) H01L 39/24 (2006.01)
Patent
CA 2044961
Abstract of the Disclosure A method to decrease breakage of Nb-Ti filaments in the extension process of a multifilament billet and reduce the diameter of a number of Nb-Ti filaments to less than 30 µm, and mass-produce copper stabilized multifilamentary Nb-Ti alloy superconducting wire with excellent superconducting characteristics including critical current density is disclosed. The manu- facturing method of copper stabilized multifilamentary Nb-Ti alloy superconducting wire comprises a process to fabricate superconducting monofilament wire having a circular cross section and comprising Nb-Ti alloy filament in the copper matrix, a process to assemble a multifilament billet by packing a number of the super- conducting monofilament wires in a copper tube, thus forming a superconducting monofilament wires packed layer, arranging one or more layer of copper wires between the superconducting monofilament wires packed layer and the inner surface of the copper tube, a proc- ess to closed-pack the multifilament billet, and then extruder and draw the billet.
Ishikawa Minoru
Ogawa Kinya
Susai Kyo-Ta
Suzuki Takuya
Ridout & Maybee Llp
The Furukawa Electric Co. Ltd.
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