Iron-based superconduction connector and fabrication method thereof

An iron-based superconductor and iron-based superconductor technology, which is applied in the direction of connecting contact materials, superconducting magnets/coils, and completing connection and connection by deformation, can solve the problems of loss of doping elements, affecting the efficiency of superconducting connection, etc. The effect of improving microcracks, improving superconducting connection efficiency and avoiding brittle fracture

Active Publication Date: 2019-07-26
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the purpose of the present invention is to solve the technical problem that the loss of doping elements in the connection area of ​​the iron-based superconducting joint obtained by the preparation metho

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Iron-based superconduction connector and fabrication method thereof
  • Iron-based superconduction connector and fabrication method thereof
  • Iron-based superconduction connector and fabrication method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Sr 0.6 K 0.48 Fe 2 As 2 (122 system) the preparation method of iron-based superconducting joint, comprises the following steps:

[0035] a pretreatment step, using mechanical methods to remove the non-superconducting layer at the end of the iron-based superconductor to be connected, so as to expose the superconducting core;

[0036] In the connection step, the superconducting cores obtained in the pretreatment step are filled with precursor powder for connection, and the connection area is wrapped with a metal sheath. The specific operations are as follows figure 1 shown;

[0037] The heat treatment step, heat treatment of the connection area, the temperature change process of the heat treatment is as follows figure 2 shown (A-B warmed to T 1 , 1 hour; B-C warmed to T 2 , 1.5 hours; C-D was kept for 1 hour; D-E was cooled to T 1 , 1 hour; E-F was kept for 2 hours; F-G was cooled to room temperature, 1 hour, where T 1 =600℃,T 2 =880℃), the heat treatment proce...

Embodiment 2

[0040] Sr 0.6 K 0.48 Fe 2 As 2 (122 system) the preparation method of iron-based superconducting joint, comprises the following steps:

[0041]a pretreatment step, using mechanical methods to remove the non-superconducting layer at the end of the iron-based superconductor to be connected, so as to expose the superconducting core;

[0042] In the connection step, the superconducting cores obtained in the pretreatment step are filled with precursor powder for connection, and the connection area is wrapped with a metal sheath. The specific operations are as follows figure 1 shown;

[0043] In the heat treatment step, heat treatment is performed on the connection area, and the temperature change process of the heat treatment is the same as that in Example 1, and the heat treatment process is a protective atmosphere;

[0044] The pressing step is the same as the analysis result in Example 1. During the heat treatment process, when the temperature is higher than 791° C., it is ...

Embodiment 3

[0046] Sr 0.6 K 0.48 Fe 2 As 2 (122 system) the preparation method of iron-based superconducting joint, comprises the following steps:

[0047] a pretreatment step, using mechanical methods to remove the non-superconducting layer at the end of the iron-based superconductor to be connected, so as to expose the superconducting core;

[0048] In the connection step, the superconducting cores obtained in the pretreatment step are filled with precursor powder for connection, and the connection area is wrapped with a metal sheath. The specific operations are as follows figure 1 shown;

[0049] In the heat treatment step, heat treatment is performed on the connection area, and the temperature change process of the heat treatment is the same as that in Example 1, and the heat treatment process is a protective atmosphere;

[0050] The pressing step is the same as the analysis result in Example 1. During the heat treatment process, when the temperature is higher than 791° C., it is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an iron-based superconduction connector and a fabrication method thereof. The fabrication method of the iron-based superconduction connector comprises the steps of stripping atail end of the iron-based superconductor to expose a superconduction core, connecting the superconduction core, wrapping a connection region, performing thermal processing on the connection region, and applying pressure to the connection region. In the step of thermal processing on the connection region, the connection region is arranged in a pressure-applying state within a range larger than a preset temperature, and the preset temperature is a run-off temperature of a doping component in the iron-based superconductor. The connection region is enabled to be in the pressure-applying state within the range which the thermal processing temperature is larger than the run-off temperature of the doping element in the iron-based superconductor in the step of thermal processing on the connectionregion, volatilization of the doping element of the connection region caused by that the temperature is raised and exceeds the preset temperature during the thermal processing process is prevented, the run-off condition of the doping element of the connection region is favorably controlled, and the superconduction connection efficiency is improved.

Description

technical field [0001] The invention relates to the field of superconductor materials, in particular to an iron-based superconducting joint and a preparation method thereof. Background technique [0002] An iron-based superconductor refers to a material in which iron is contained in a compound and exhibits superconductivity at low temperature, and iron acts as the main body for superconductivity. Iron-based superconductors include ReFeAsO (Re = rare earth element) (1111 system), AFe 2 As 2 (A=K, Sr, Ba, etc.) (122 system), LiFeAs (111 system) and FeSe (11 system) and the like. Compared with traditional low-temperature superconducting materials, iron-based superconductors have the advantages of high transition temperature, large upper critical field, strong critical current, and small magnetic field dependence. guide material. Compared with oxide high-temperature superconducting materials, iron-based superconductors have simpler crystal structure, large coherence length, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01R4/68H01R43/04H01F6/06C21D8/00
CPCC21D8/005H01F6/065H01R4/68H01R43/04
Inventor 朱炎昌马衍伟王栋樑
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap