Method for preparing nanocarbon conductive fiber yttrium-niobium-aluminum superconducting material

A nano-carbon fiber and conductive fiber technology, applied in the usage of superconductor elements, superconducting devices, superconducting/high-conducting conductors, etc., can solve the problems of complex and difficult yttrium niobium aluminum superconducting materials and high equipment requirements, and achieve super The effect of good conductivity, good connectivity and high critical transition temperature

Inactive Publication Date: 2017-12-12
SUZHOU NANER MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research and development prospects of superconducting materials are good, but the superconducting performance needs to be further enhanced. In order to meet the application requirements, it is necessary to increase the critical transition temperature and improve its preparation process, and it is necessary to strengthen research in this area
[0004] The process of synthesizing yttrium-niobium-aluminum superconducting materials at high temperature is generally complex and difficult, or requires high equipment requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Graphite pretreatment, adding sodium fluoride to the nano-graphite powder, adding a metal catalyst, mixing, heating at 600°C under the protection of an inert gas, and controlling the heating time to 10min, fixing sodium fluoride on the surface of the nano-graphite powder .

[0020] Nano-carbon fiber pretreatment, the nano-carbon fiber is oxidized with concentrated sulfuric acid and potassium permanganate mixed acid, after ultrasonic vigorous stirring, the carboxylated nano-carbon fiber is obtained, the surface treatment agent is added, heat treatment at 150 ° C for 10 minutes, and silver is added. Under the protection of a mixed gas of nitrogen and helium, heat at 400° C. for 30-45 minutes to uniformly disperse the silver in the carbon nanofibers.

[0021] Put pretreated graphite and pretreated nano-carbon fiber in a container, dissolve with 150 parts of isopropanol, then add dispersant, polyphenylene sulfide, PPS resin, blend with a strong mixer, and then use an ultras...

Embodiment 2

[0029] Graphite pretreatment, adding sodium fluoride to the nano-graphite powder, adding a metal catalyst, mixing, heating at 650°C under the protection of an inert gas, and controlling the heating time for 15 minutes, and fixing sodium fluoride on the surface of the nano-graphite powder .

[0030] Nano-carbon fiber pretreatment, the nano-carbon fiber is oxidized with concentrated sulfuric acid and potassium permanganate mixed acid, after ultrasonic vigorous stirring, to obtain carboxylated nano-carbon fiber, add surface treatment agent, heat treatment at 200 ° C for 15 minutes, add silver, in Under the protection of a mixed gas of nitrogen and helium, heat at 450° C. for 45 minutes to uniformly disperse the silver in the carbon nanofibers.

[0031] Put pretreated graphite and pretreated nano-carbon fiber in a container, dissolve with 250 parts of isopropanol, then add dispersant, polyphenylene sulfide, PPS resin, blend with a strong mixer, and then use an ultrasonic disperser...

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PUM

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Abstract

The invention discloses a method for preparing a nanocarbon conductive fiber yttrium-niobium-aluminum superconducting material. The method is characterized in that yttrium powder is added into a nanocarbon conductive fiber material solution to coat nanocarbon conductive fibers with yttrium powder, clustering is prevented after heat treatment, close and uniform combination with yttrium powder can be realized, the conductivity is improved, and the obtained product is high in critical transition temperature and favorable in superconducting property. According to the method, by use of the gas absorption characteristic of niobium powder, firstly, through the physical and chemical functions between hydrogen and niobium powder, a niobium powder and trace niobium hydrogen compound containing hydrogen is generated, the purpose of refining niobium powder is achieved, activation energy in the reaction is greatly reduced, and the synthetic difficulty is reduced. The prepared nanocarbon conductive fiber yttrium-niobium-aluminum superconducting material is simple in process, regular in shape and appearance, compact in surface, excellent in connection performance and high in superconducting critical temperature.

Description

technical field [0001] The invention relates to the field of superconducting materials, in particular to a method for preparing a nano-carbon conductive fiber yttrium-niobium-aluminum superconducting material. Background technique [0002] A superconducting material refers to a material that exhibits the properties of zero resistance and repelling magnetic lines of force under certain low temperature conditions. It has been found that 28 kinds of elements and thousands of alloys and compounds can become superconductors. The production technology of high-temperature superconducting materials has matured with the development of time, the price has also decreased, and the market competitiveness has continued to increase. It has the advantages of small size, light weight, low loss and large transmission capacity. It is an upgraded product of traditional cables. . [0003] At present, the research and development prospects of superconducting materials are good, but the supercon...

Claims

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Application Information

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IPC IPC(8): H01B12/00H01B13/00
CPCH01B12/00H01B13/00H01B13/0016Y02E40/60
Inventor 不公告发明人
Owner SUZHOU NANER MATERIAL TECH CO LTD
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