A kind of iron-based superconducting joint and preparation 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
CN110061367BActive Publication Date: 2020-08-11INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Publication Date
2020-08-11

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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.
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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] The iron-based superconductor refers to a material that contains iron in a compound, has a superconducting phenomenon at a low temperature, and iron acts as a main body for forming a superconductor. 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), etc. 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. It is a new superconductor with great application prospects in the range of 20-50K. guide material. Compared with oxide high-temperature superconducting materials, iron...

Claims

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