Electricity: conductors and insulators – Conduits – cables or conductors – Superconductors
Patent
1993-12-16
1998-05-19
Sough, Hyung S.
Electricity: conductors and insulators
Conduits, cables or conductors
Superconductors
428607, 428614, 505812, 505884, H01B 1200
Patent
active
057538620
ABSTRACT:
A compound superconducting wire comprising a matrix of CuX alloy and a multiplicity of Z.sub.3 X filaments embedded in the matrix in a spaced relationship so as not to come into contact with each other wherein X is Sn or Ga and Z.sub.3 X is Nb.sub.3 Sn or V.sub.3 Ga. In a precursor, therefore, a multiplicity of filaments of a base metal material Z such as Nb are arranged in a Cu base metal metrix concentrically in layers around a center core of a base metal material X such as Sn, in which the spacing between any adjacent filaments arranged in a former boundary region of an .epsilon.-phase bronze layer having a certain radius from the center produced when the precursor is preheat-treated at a temperature of 300.degree. to 600.degree. C. is made larger than the spacing between any adjacent filaments arranged in the other matrix regions. Also disclosed is a precursor wire wherein a composite of a Cu base metal material and a base metal material X capable of forming an alloy with the Cu base metal material is used as a matrix without arranging a core of the base metal material X at the center, and a multiplicity of filaments of a base metal material Z are embedded in the composite in a spaced relationship.
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Egawa Kunihiko
Higuma Hiroko
Kubo Yoshio
Nagai Takayuki
Uchikawa Fusaoki
Mitsubishi Denki & Kabushiki Kaisha
Sough Hyung S.
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