Oxide superconducting wire, method of preparing the same, and method of handling the same
AssigneeSumitomo Electric Industries, Ltd.
InventorsKenichi Sato, Hidehito Mukai, Nobuhiro Shibuta
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Abstract
In order to obtain a superconducting wire containing an oxide superconductor, whose critical current density is not much reduced upon application of bending, a plurality of strands 3, comprising oxide superconductors 1 covered with first metal sheaths 2, are filled into a second metal sheath 4, and deformation processing is performed to sectionally apply a compressive load to the second metal sheath, so that the thickness of the oxide superconductor 1 contained in each strand 3 is not more than 5% of the overall thickness of the superconducting wire 6.
Claims4
A superconducting wire comprising:
- a metal sheath having a thickness-directional dimension;
- and
- a plurality of superconductors independently distributed in said metal sheath in said thickness direction, wherein the thickness-directional dimension of each said superconductor is not more than 5% of the thickness directional outside dimension of said metal sheath and wherein said superconductors are bismuth oxide superconductors having components of Bi—Sr—Ca—Cu—O or (Bi, Pb)—Sr—Ca—Cu—O,
- wherein said bismuth oxide superconductors have ratios of Bi+Pb:Sr:Ca:Cu=1.5 to 2.5:1.8 to 2.2:1.5 to 2.5:2.5 to 3.5 wherein said ratios are those that are sufficient to prepare a powder comprising a 2212 phase and nonsuperconducting phases.
Dependencies are inferred from the claim text.