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A kind of preparation method of yttrium barium copper oxide high temperature superconducting tape

A technology of high-temperature superconducting strips and yttrium-barium-copper-oxygen, which is applied in metal material coating technology, solid-state chemical plating, coating, etc., can solve problems such as the complex process of YBCO superconducting strips, and achieve low cost and high deposition efficiency. The effect of high rate and improvement of production efficiency

Inactive Publication Date: 2017-12-12
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcoming that the YBCO superconducting strip material technology of prior art preparation is complex, provide a kind of preparation method of the YBCO superconducting strip material with simple structure

Method used

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  • A kind of preparation method of yttrium barium copper oxide high temperature superconducting tape
  • A kind of preparation method of yttrium barium copper oxide high temperature superconducting tape
  • A kind of preparation method of yttrium barium copper oxide high temperature superconducting tape

Examples

Experimental program
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Effect test

Embodiment 1

[0021] (1) Weigh 0.005mol of barium acetate and 0.005mol of tetrabutyl titanate, mix barium acetate and tetrabutyl titanate and dissolve in a mixed solution of 25ml of methyl glycol ether and 25ml of glacial acetic acid;

[0022] (2) Stir the solution prepared in step (1) for 1 h with a magnetic stirrer, and then use a rotary evaporator to remove the solvent to obtain a gel;

[0023] (3) the gel that described step (2) makes is added in 25ml glycol methyl ether, 25ml glacial acetic acid and 50ml acetylacetone, the mole of the gel in this step and glycol methyl ether, glacial acetic acid and acetylacetone The ratio is 1:50, and the magnetic stirrer is stirred for 0.5h at a temperature of 60°C to prepare a precursor solution with a total ion concentration of Ba and Ti of 0.1mol / L;

[0024] (4) Spin-coat the precursor solution prepared in step (3) on the NiW alloy substrate at a speed of 1500 rpm, and the spin-coating time is 90s;

[0025] (5) Place the substrate coated in step ...

Embodiment 2

[0029] (1) Weigh 0.01mol of barium acetate and 0.01mol of tetrabutyl titanate respectively, mix barium acetate and tetrabutyl titanate and dissolve in a mixed solution of 25ml of methyl glycol ether and 25ml of glacial acetic acid;

[0030] (2) The solution prepared in step (1) was stirred for 2 hours by a magnetic stirrer, and then the solvent was evaporated by a rotary evaporator to obtain a gel;

[0031] (3) the gel that described step (2) makes is added in 25ml glycol methyl ether, 25ml glacial acetic acid and 50ml acetylacetone, the mole of the gel in this step and glycol methyl ether, glacial acetic acid and acetylacetone The ratio is 1:50, and the magnetic stirrer is stirred for 1 hour at a temperature of 65 ° C to prepare a precursor solution with a total ion concentration of Ba and Ti of 0.2 mol / L;

[0032] (4) Spin-coat the precursor solution prepared in step (3) on the NiW alloy substrate at a speed of 3000 rpm, and the spin-coating time is 90s;

[0033] (5) Place ...

Embodiment 3

[0037] (1) Weigh 0.015mol of barium acetate and 0.015mol of tetrabutyl titanate, mix barium acetate and tetrabutyl titanate and dissolve in a mixed solution of 25ml glycol methyl ether and 25ml glacial acetic acid;

[0038] (2) The solution prepared in step (1) was stirred for 3 hours by a magnetic stirrer, and then the solvent was evaporated by a rotary evaporator to obtain a gel;

[0039] (3) the gel that described step (2) makes is added in 25ml glycol methyl ether, 25ml glacial acetic acid and 50ml acetylacetone, the mole of the gel in this step and glycol methyl ether, glacial acetic acid and acetylacetone The ratio is 1:50, and the magnetic stirrer is stirred for 1.5h at a temperature of 70°C to prepare a precursor solution with a total ion concentration of Ba and Ti of 0.3mol / L;

[0040] (4) Spin-coat the precursor solution prepared in step (3) on the NiW alloy substrate at a speed of 4000 rpm, and the spin-coating time is 90s;

[0041](5) Place the substrate coated in...

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Abstract

Provided is a method for preparing an yttrium barium copper oxide high-temperature superconducting strip. The method comprises the steps that barium acetate and tetrabutyl titanate are mixed and dissolved in a mixed solution of ethylene glycol monomethyl ether, glacial acetic acid and acetylacetone according to the molar ratio of Ba to Ti of 1:1, and precursor liquid with the total concentration of Ba ions to Ti ions of 0.1 mol / L to 0.3 mol / L is prepared after even mixing; then the precursor is smeared to an NiW alloy base band; a thin film obtained after smearing is subjected to thermal treatment, and a barium titanate (BaTiO3) thin film with biaxial texture is obtained; and then a YBa2Cu3O7-x(YBCO) superconducting layer is prepared on a BaTiO3 buffer layer through a chemical solution method, and the high-temperature superconducting strip with the structure of NiW / BaTiO3 / YBCO is prepared.

Description

technical field [0001] The invention relates to a method for preparing a high-temperature superconducting tape, in particular to a method for preparing a YBCO high-temperature superconducting tape. Background technique [0002] Take YBa 2 Cu 3 o 7-x (YBCO) superconducting coating as the conductor of the second-generation high-temperature superconducting tape due to its excellent intrinsic properties (irreversible field reaches 7T at 77K, critical current density reaches 10 6 A / cm 2 ), attracting people to continuously explore and study its practical material-forming technology. The second-generation high-temperature superconducting tape is an important development direction of superconducting materials at present. It has broad application prospects and huge market potential, and can be widely used in energy, military industry, medical treatment, transportation and scientific research. Therefore, high-temperature superconducting materials and their preparation technology...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C20/08
CPCC23C20/08
Inventor 丁发柱古宏伟张慧亮董泽斌张贺屈飞尚红静
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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