Method for preparing Y-Nb-Cu superconducting material through high-temperature sintering method

A superconducting material and high-temperature sintering technology, which is applied in the usage of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc., can solve the problems of high equipment requirements, complexity and difficulty, and achieve good connectivity and process Effects that are simple and reduce the difficulty of compositing

Inactive Publication Date: 2017-05-31
SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The process of synthesizing yttrium-niobium-copper 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

[0014] Sprinkle Nb powder with a purity of 99.999% evenly in a quartz boat, put it into a tube furnace, feed a mixture of 10% hydrogen and 90% nitrogen by volume, heat at a temperature range of 400°C, and keep warm for 3 Hours, after cooling with the furnace, take it out to get pretreated niobium powder.

[0015] Dry the above-mentioned pretreated niobium powder, yttrium oxide and copper oxide, put them in a grinder and grind them for 10 hours to obtain a powder, put the powder in a vacuum tube furnace, heat up to 850°C, preheat at a constant temperature for 10 hours, take out , to prepare mixed powder 1.

[0016] Take calcium carbonate, methylcellulose, sodium borate, benzoic acid, calcium nitrate and barium sulfate and place them in a grinder, use distilled water as a grinding aid for ball milling for 2 hours, then add sodium lignosulfonate and continue ball milling for 4 hours, take it out, Dry to obtain the mixed powder 2.

[0017] After mixing the above-mentioned mixed ...

Embodiment 2

[0020] Sprinkle Nb powder with a purity of 99.999% evenly in a quartz boat, put it into a tube furnace, feed hydrogen gas with a volume ratio of 100%, heat it at a temperature range of 420°C, keep it for 3 hours, and take it out after cooling with the furnace , to obtain pretreated niobium powder.

[0021] Dry the above-mentioned pretreated niobium powder, yttrium oxide and copper oxide, put them in a grinder and grind them for 12 hours to obtain a powder, put the powder in a vacuum tube furnace, heat up to 900°C, preheat at a constant temperature for 16 hours, take out , to prepare mixed powder 1.

[0022] Take calcium carbonate, methyl cellulose, sodium borate, benzoic acid, calcium nitrate and barium sulfate and place them in a grinder, use distilled water as a grinding aid for ball milling for 6 hours, then add sodium lignosulfonate and continue ball milling for 4 hours, take it out, Dry to obtain the mixed powder 2.

[0023] After mixing the above-mentioned mixed powder...

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PUM

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Abstract

The invention discloses a method for preparing a Y-Nb-Cu superconducting material through a high-temperature sintering method. According to the method for preparing the Y-Nb-Cu superconducting material, disclosed by the invention, the characteristic of absorbing a gas by Nb powder is utilized, an Nb powder and trace Nb hydrogen compound containing hydrogen is generated at first through physical and chemical reaction of the hydrogen and the Nb powder, so that the purpose of refining the Nb powder is achieved, activation energy in reaction is reduced to a large extent, and the synthesis difficulty is reduced; a product prepared by the invention is simple in technology, regular in morphology, dense in surface, good in connection performance and high in superconduction critical temperature.

Description

technical field [0001] The invention relates to the field of superconducting materials, in particular to a method for preparing yttrium-niobium-copper superconducting materials by a high-temperature sintering method. 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] As a kind of superconductor with the highest critical temperature, domestic and foreign scientists ...

Claims

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Application Information

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