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Superconducting material preparation method with simple process and simple operation

A superconducting material with a simple process technology, applied in the field of preparing superconducting materials, can solve the problems that the purity and quantity of samples cannot meet the application requirements, and the preparation of iron-based superconducting materials is difficult, so as to improve the purity and reduce the solid-state reaction temperature Effect

Inactive Publication Date: 2015-11-04
CHENGDU DIANSHI CREATIVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the preparation of iron-based superconducting materials is still a difficult problem. The reason is that the purity and quantity of samples prepared from quartz tubes of about 1 cm in the laboratory cannot meet the application requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing a superconducting material with simple process and simple operation, the method is for preparing an iron-based superconducting material, comprising the following process steps:

[0022] 1) The raw materials according to the stoichiometric ratio are subjected to high-energy ball mill refinement and preliminary reaction; the high-energy ball mill refinement and preliminary reaction treatment include using iron wear-resistant media to collide, squeeze, crush and mix the raw materials during mechanical movement And energy exchange, so that the raw materials are fully refined and partially reacted and the activity of the raw materials is increased. The ball milling time is 2-8 hours;

[0023] 2) Pressing and molding the powder obtained by the high-energy ball milling and preliminary reaction treatment to obtain a shaped block or unshaped powder;

[0024] 3) Solid phase heat treatment of the formed block or unshaped powder in step 2) to obtain a superco...

Embodiment 2

[0029] This embodiment is further optimized on the basis of the above embodiments, and further to better realize the present invention, the solid-phase heat treatment is carried out in an Ar atmosphere or a vacuum closed system.

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PUM

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Abstract

The invention discloses a superconducting material preparation method with a simple process and simple operation. The method is used for preparing an iron-based superconducting material, and comprises the following process steps: (1) raw materials with a stoichiometric ratio are subjected to high-energy ball milling refining and are subjected to a preliminary reaction, wherein the raw materials are subjected to impacting, pressing, crushing, mixing and energy exchange under mechanical movements with an iron wear-resisting medium, such that the raw materials are fully refined and partially reacted, and raw material activity is improved; a ball milling time is 2-8h; the powdery material obtained through high-energy ball milling refining and the preliminary reaction is press-molded, such that a molded block or unmolded powder is obtained; (3) the molded block or unmolded powder obtained in the step (2) is subjected to solid-phase heat treatment, such that a superconductor block or superconductor powder is obtained. With the iron-based high-temperature superconducting material preparation method, macro preparation is realized, solid-phase reaction temperature is reduced, and product purity is improved.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular, a method for preparing superconducting materials with simple process and simple operation. Background technique [0002] With the development of science and technology, people have developed new materials on the basis of traditional materials and according to the research results of modern science and technology. New materials are divided into four categories according to their components: metallic materials, inorganic non-metallic materials (such as ceramics, gallium arsenide semiconductors, etc.), organic polymer materials, and advanced composite materials. According to material properties, it can be divided into structural materials and functional materials. Structural materials mainly use the mechanical and physical and chemical properties of materials to meet performance requirements such as high strength, high stiffness, high hardness, high temperature resistance, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/515C04B35/547C04B35/622C01B25/08C01G49/12C01B19/04
Inventor 付裕
Owner CHENGDU DIANSHI CREATIVE TECH