Oxide superconductivity wire material and method of manufacturing thereof

A superconducting wire, oxide technology, applied in cable/conductor manufacturing, chemical instruments and methods, copper compounds, etc., can solve the problems of inability to obtain superconducting properties, Ic reduction, etc., to ensure superconducting properties, high superconductivity Effects of Features

Inactive Publication Date: 2013-07-03
SWCC SHOWA CABLE SYST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is considered that, as a result, the Ic of the manufactured superconductor decreases and the desired superconducting properties cannot be obtained.

Method used

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  • Oxide superconductivity wire material and method of manufacturing thereof
  • Oxide superconductivity wire material and method of manufacturing thereof
  • Oxide superconductivity wire material and method of manufacturing thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0098] In the same manufacturing method as in Example 1, Sn was used instead of the added element (added metal) Zr, and a superconducting raw material solution in which 1 wt% of Sn was added to the superconducting raw material solution was used, and the same method as in Example 1 was used. A superconducting wire in which oxide particles containing Sn were formed as magnetic flux pinning in a superconducting layer was produced.

[0099] Figure 7 A is a TEM image of a vertical section of the superconducting layer of Example 2, Figure 7 B is the element map image of the same section. also, Figure 7 also with Figure 6 same in Figure 7 Shown in A as a flux pinning point 145 in the superconducting layer, Figure 7 In B, the magnetic flux pinning point appears in the light and medium part. such as these Figure 7 A. Figure 7 As shown in B, BaSnO, which is an oxide particle containing Sn, is uniformly dispersed and formed in the superconducting layer as the magnetic flu...

Embodiment 3

[0101] In the same manufacturing method as in Example 1, Nb was used instead of the added element (added metal) Zr, and a superconducting raw material solution in which 1 wt% of Nb was added to the superconducting raw material solution was used. A superconducting wire in which oxide particles containing Nb were formed as magnetic flux pinning points in the superconducting layer was produced.

[0102] Figure 8 A is a TEM image of a vertical section of the superconducting layer of Example 3, Figure 8 B is the element map image of the same section. also, Figure 8 also with Figure 6 same in Figure 8 Shown in A as a flux pinning point 145 in the superconducting layer, Figure 8 In B, the magnetic flux pinning point appears in the light and medium part. Such as Figure 8 A. Figure 8 As shown in B, oxide particles containing Nb, that is, YNbBa, are uniformly dispersed and formed in the superconducting layer as magnetic flux pinning points. 2 o 6 , BaNb 2 o 6 . In a...

Embodiment 4

[0104] In the same manufacturing method as in Example 1, a Zr-containing naphthenate with Zr as an additional element (addition metal) was used to add 3% (3wt%) in terms of metal weight ratio, and additional The amount of Ba in the Zr reaction, and thus, the superconducting raw material solution prepared in such a manner that the molar ratio of Y:Gd:Ba:Cu is maintained at 0.77:0.23:1.5:3 is prepared to have A superconducting wire including a superconducting layer of oxide particles of Zr. That is, the superconducting wire of Example 4 has oxide particles BaZrO containing Zr uniformly dispersed as magnetic flux pinning points. 3 the superconducting layer. In the superconducting wire of Example 4, Jc was 3.0 [MA / cm 2 ] (@77K, from the magnetic field), Jc, min is 0.66 [MA / cm 2 ] (@77K, 1T).

[0105]

[0106] In this comparative example, a superconducting wire was produced by the same production method as in Example 1 without adding an additive element (additional metal) Zr....

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Abstract

Provided is an oxide superconducting wire material, wherein pinning of magnetic flux, under an environment in which magnetic field is applied, can be conducted efficiently towards any magnetic-field applying angle direction, to secure a high superconductive property. The oxide superconducting wire material (100) is provided with a metal substrate (110), an intermediate layer (120) formed upon the metal substrate (110), and a REBaCuO-system superconductive layer (140) formed upon the intermediate layer (120). RE comprises one or more elements selected from Y, Nd, Sm, Eu, Gd, and Ho. Oxide particles including Zr are distributed within the superconductive layer (140) as magnetic-flux pinning points (145), and the mole ratio (y) of Ba included within the superconductive layer (140) is, when the mole ratio of Zr is assumed to be x, within a range of (1.2+ax)@y@(1.8+ax), wherein 0.5@a@2.

Description

technical field [0001] The invention relates to an oxide superconducting wire useful for superconducting application equipment such as superconducting magnets, superconducting cables, current limiters, generators, motors and transformers, and a manufacturing method thereof. An oxide superconducting wire used in a superconducting application device and a manufacturing method thereof. Background technique [0002] Oxide superconductors and previous Nb 3 Sn or Nb 3 Compared with metal-based superconductors such as Al, the critical temperature (Tc) is high, and superconducting application equipment such as power transmission cables, transformers, and motors can be used at the temperature of liquid nitrogen. Therefore, studies on its wire-forming are actively being conducted. [0003] In order to apply an oxide superconductor to the above fields, it is necessary to manufacture a long wire having a high critical current density (Jc) and a high critical current value (Ic). On t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B12/06C01G1/00C01G3/00H01B13/00
CPCY10T428/2949H10N60/0324H10N60/0828H01B12/06C01G1/00C01G3/00H01B13/00
Inventor 吉积正晃中冈晃一高桥保夫和泉辉郎盐原融青木裕治上林克寿
Owner SWCC SHOWA CABLE SYST CO LTD
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