Method for producing Nb-Sn compound superconducting wire precursor and wire
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorYoshio Kubo
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Abstract
A method of producing an Nb—Sn compound superconducting wire precursor includes forming composite filament materials, each filament including a niobium material of an Nb-based metal and a titanium material of pure Ti enveloped in the niobium material; forming a composite rod in which composite filament materials are arranged in a matrix of a Cu-based metal but not in contact with one another, the matrix containing Sn diffused by heat treatment to combine with the niobium material to form a compound; and drawing the composite rod.
Claims10
A method of producing an Nb—Sn compound superconducting wire precursor comprising:
- forming a plurality of composite filament materials, each filament comprising a niobium material of an Nb-based metal and a titanium material of pure Ti enveloped in said niobium material;
- forming a composite rod in which said plurality of composite filament materials are arranged in a matrix of a Cu-based metal but not in contact with one another, wherein said matrix contains Sn diffused by heat treatment to combine with said niobium material to form a compound;
- and
- drawing said composite rod.
A method of producing an Nb—Sn compound superconducting wire, comprising heat-treating an Nb—Sn compound superconducting wire precursor comprising:
- a matrix of a Cu-based metal;
- a plurality of composite filaments, each filament comprising a niobium layer of an Nb-based metal and a titanium layer of pure Ti enveloped in said niobium material;
- and
- Sn which forms a compound by being combined with said niobium layer, when the Nb—Sn compound superconducting wire precursor is subjected to heat treatment so that the Sn is diffused into said matrix, wherein said plurality of composite filaments are embedded in said matrix so as not to be in contact with one another, to form an Nb—Sn compound superconducting wire.
Dependencies are inferred from the claim text.