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Method of preparing Nb3AL superconducting wire by adopting high energy ball milling method

A superconducting wire and high-energy ball milling technology, which is applied in the usage of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc., can solve the problems of easy disconnection of precursor wires, avoid easy fracture, and facilitate scale The effect of streamlining production and reducing costs

Active Publication Date: 2013-05-08
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of adopting high-energy ball milling method to prepare Nb 3 The method of Al superconducting wire solves the problem of preparing Nb in the prior art 3 Al superconducting wire with high temperature treatment Nb 3 The problem that the Al precursor wire is easy to break

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The first step is to prepare niobium-aluminum supersaturated solid solution

[0027] Take Nb powder with a purity of 99.99% and Al powder with a purity of 99.99%, mix them according to the atomic ratio of Nb and Al at a ratio of 3:1, put the mixed powder in a ball mill jar, add C 18 h 36 o 2 Stearic acid is used as ball milling agent, and the mass ratio of ball and mixed powder is 10:1 in the ball mill tank, then carries out high-energy ball mill processing, is filled with Ar gas in the ball mill tank, and the rotating speed is 700 revolutions per minute, and the ball mill time is 6 hours, Obtain niobium-aluminum supersaturated solid solution;

[0028] The second step is to prepare Nb 3 Al superconducting wire single core wire precursor

[0029] The niobium-aluminum supersaturated solid solution prepared in the first step was put into a Cu tube, and multi-pass drawing was performed at a processing rate of 10 meters per minute and a material deformation rate of 8% pe...

Embodiment 2

[0036] The first step is to prepare niobium-aluminum supersaturated solid solution

[0037] Take Nb powder with a purity of 99.99% and Al powder with a purity of 99.99%, mix according to the ratio of the atomic ratio of Nb and Al to 3:1, put the mixed powder in a ball mill jar, add polyethylene glycol as a ball mill agent, The mass ratio of the balls to the mixed powder in the ball milling tank is 10:1, and then high-energy ball milling is carried out, the ball milling tank is filled with Ar gas, the rotating speed is 1000 revolutions per minute, and the ball milling time is 5 hours to obtain a niobium-aluminum supersaturated solid solution;

[0038] The second step is to prepare Nb 3 Al superconducting wire single core wire precursor

[0039] The niobium-aluminum supersaturated solid solution obtained in the first step is put into a Cu tube, and multi-pass drawing is carried out at a processing rate of 15 meters per minute and a material deformation rate of 10% in each proce...

Embodiment 3

[0046] The first step is to prepare niobium-aluminum supersaturated solid solution

[0047] Get the Nb powder and Al-Ge alloy powder that purity is 99.99%, the mass fraction that Ge accounts for the total amount of Al-Ge in the Al-Ge alloy powder is 2%, the Nb powder and Al-Ge alloy powder are according to the ratio of Nb and Al Mix at an atomic ratio of 3:1, then put the mixed powder in a ball mill jar, add the molecular formula C 18 h 36 o 2 Stearic acid is used as ball milling agent, and the mass ratio of ball and mixed powder is 10:1 in the ball mill jar, then carries out high-energy ball mill processing, is filled with Ar gas in the ball mill jar, and the rotating speed is 2000 revolutions per minute, and the ball mill time is 4 hours, Obtain niobium-aluminum supersaturated solid solution;

[0048] The second step is to prepare Nb 3 Al superconducting wire single core wire precursor

[0049] The niobium-aluminum supersaturated solid solution prepared in the first ste...

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Abstract

The invention discloses a method of preparing an Nb3AL superconducting wire by adopting a high energy ball milling method. The method comprises four steps: preparing niobium aluminum supersaturation solid solution, preparing an Nb3AL superconducting wire single core wire precursor, preparing an Nb3AL superconducting wire split conductor precursor and heat treatment. The method of preparing the Nb3AL superconducting wire solves the problem that Nb3AL prepared with the prior art is easy to break, and avoids the situation that the precursor is easy to break in high temperature by adopting traditional fast heating and fast cooling processing and requirements on the particularity of heating equipment. An obtained superconducting wire is even in ingredients, good in performance, cost is effectively reduced, and mass production can be carried out conveniently.

Description

technical field [0001] The invention belongs to the technical field of preparation of superconducting materials, in particular to a method for preparing Nb by high-energy ball milling. 3 Al superconducting wire method. Background technique [0002] Fully superconducting controllable magnetic confinement thermonuclear fusion energy (tokamak) power generation technology is one of the strategic new energy technologies for the sustainable development of mankind in the future. It is recognized as the most likely to solve the future global energy crisis and promote the sustainable development of human society. The ideal energy source for the development of proven effective. In the fully superconducting magnetic confinement tokamak device, the superconducting magnet is the core component, which has strict requirements on superconducting materials: such as large critical current density; good stress and strain tolerance characteristics; high current carrying capacity; good Excelle...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B12/06H01B12/10
CPCY02E40/644Y02E40/642Y02E40/60
Inventor 崔利军潘熙锋闫果王大友侯艳荣王韵涵冯勇刘向宏张平祥
Owner 西部超导材料科技股份有限公司
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