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A kind of preparation method of yttrium barium copper oxide superconducting thick film

A yttrium barium copper oxide, thick film technology, applied in the field of high temperature superconducting film preparation, can solve the problem that the price of YBCO thick film cannot be used, and achieve the effects of preventing cracks, reducing production costs, and reducing volatility

Inactive Publication Date: 2018-02-02
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

[0005] The purpose of the present invention is to overcome the shortcoming that prior art can not adopt cheap chemical solution method to prepare YBCO thick film, provide a kind of preparation method of single-layer YBCO thick film with high current-carrying capacity

Method used

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  • A kind of preparation method of yttrium barium copper oxide superconducting thick film
  • A kind of preparation method of yttrium barium copper oxide superconducting thick film
  • A kind of preparation method of yttrium barium copper oxide superconducting thick film

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Take by weighing yttrium acetate, barium trifluoroacetate and copper acetate to be 0.015mol, 0.03mol and 0.045mol respectively, after mixing yttrium acetate, barium trifluoroacetate and copper acetate, be dissolved in acetic acid containing 10mol% at room temperature and Propionic acid was prepared as a solution in deionized water;

[0025] (2) After the solution prepared in step (1) was stirred by a magnetic stirrer for 1 h, the solvent was evaporated by a rotary evaporator to obtain a gel;

[0026] (3) Add 10 mL of methanol into the gel prepared in the step (2), stir with a magnetic stirrer for 0.5 h, and then use a rotary evaporator to evaporate the solvent to further remove impurities such as moisture to obtain a very pure gel. glue;

[0027] (4) The gel prepared in step (4) is added to the mixed solution of 15ml methanol, 7.5mL polyethylene glycol and 7.5ml terpineol to make the total ion concentration of Y, Ba and Cu three kinds of metals to be 3mol / L solut...

Embodiment 2

[0033] (1) Take by weighing yttrium acetate, barium trifluoroacetate and copper acetate to be 0.015mol, 0.03mol and 0.045mol respectively, after mixing yttrium acetate, barium trifluoroacetate and copper acetate, be dissolved in acetic acid containing 20mol% and copper acetate at room temperature Propionic acid was prepared as a solution in deionized water;

[0034] (2) After the solution prepared in step (1) was stirred by a magnetic stirrer for 2 hours, the solvent was evaporated by a rotary evaporator to obtain a gel;

[0035] (3) Add 10mL of methanol to the gel prepared in step (2), stir it with a magnetic stirrer for 1 hour, and then use a rotary evaporator to remove the solvent to further remove impurities such as water to obtain a very pure gel ;

[0036] (4) The gel prepared in step (4) is added to the mixed solution of 10ml methanol, 5mL polyethylene glycol and 5ml terpineol to make the total ion concentration of Y, Ba and Cu three kinds of metals be 4.5mol / L The so...

Embodiment 3

[0042] (1) Take by weighing yttrium acetate, barium trifluoroacetate and copper acetate to be 0.015mol, 0.03mol and 0.045mol respectively, after mixing yttrium acetate, barium trifluoroacetate and copper acetate, be dissolved in acetic acid containing 30mol% at room temperature and Propionic acid was prepared as a solution in deionized water;

[0043] (2) After the solution prepared in step (1) was stirred for 3 hours by a magnetic stirrer, the solvent was evaporated by a rotary evaporator to obtain a gel;

[0044] (3) Add 10mL of methanol into the gel prepared in the step (2), stir it with a magnetic stirrer for 1.5h, and then use a rotary evaporator to evaporate the solvent to further remove impurities such as water to obtain a very pure gel. glue;

[0045] (4) The gel prepared in step (4) is added to the mixed solution of 7.5ml methanol, 3.75mL polyethylene glycol and 3.75ml terpineol to make the total ion concentration of Y, Ba and Cu three kinds of metals to be 6mol / L ...

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Abstract

The invention relates to a preparation method of a yttrium barium copper oxide superconducting thick film. The method consists of: firstly preparing a precursor solution, mixing yttrium acetate, barium trifluoroacetate, and copper acetate according to a Y:Ba:Cu mole ratio of 1:2:3, dissolving the mixture in a mixed solution of acetic acid and propionic acid; stirring the substances evenly, then performing vacuum evaporation of the solvent to obtain a gel; then adding methanol and mixing the substances uniformly, then evaporating the solvent to obtain a gel; then adding a proper amount of methanol, polyethylene glycol and terpilenol to make the precursor solution with a 3.0-6.0mol / L total concentration of Y, Ba and Cu three metal ions; then coating a substrate with the precursor solution; subjecting the coated film firstly to a 300-500DEG C low temperature heat treatment process to decompose metal organic salt; then conducting 750DEG C-850DEG C high temperature heat treatment to obtain a yttrium barium copper oxide (YBCO) membrane with a tetragonal phase; and finally performing oxygen uptake treatment at 500-600DEG C so as to obtain a YBCO superconducting thick film with a monolayer thickness of greater than 6 micrometers.

Description

technical field [0001] The invention relates to a preparation method of a high-temperature superconducting film, in particular to a preparation method of a yttrium-barium-copper-oxygen superconducting thick film. Background technique [0002] The huge application potential of high-temperature superconducting materials in the field of strong electricity has made the practical production technology of high-temperature superconducting wire strips the focus of research in various countries. The first generation of high-temperature superconducting tape based on the BiSrCaCuO (BSCCO) superconducting system was commercialized in the late 1990s. However, since the irreversible field of Bi-based superconducting materials is about 0.5T (77K), the application conditions are very strict. Once it is applied in a slightly strong magnetic field environment, it will face the danger of quenching. The silver-in-tube (PIT) technology is used in the material process, and the cost of raw materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B12/06C04B35/45C04B35/622C04B35/634C04B35/632
CPCC04B35/4508C04B35/62222C04B35/6325C04B35/63488C04B2235/3215C04B2235/3225H01B12/06Y02E40/60
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