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Preparation method of second-generation high-temperature superconducting tape and second-generation high-temperature superconducting tape

A high-temperature superconducting tape, superconducting technology, applied in superconducting/high-conducting conductors, the usage of superconducting elements, superconducting devices, etc., can solve the problem of poor stability of irreversible compressive strain and so on

Active Publication Date: 2022-07-08
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a second-generation high-temperature superconducting strip preparation method and the second-generation high-temperature superconducting strip, so as to solve the problem of poor irreversible compression strain stability of the second-generation high-temperature superconducting strip

Method used

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  • Preparation method of second-generation high-temperature superconducting tape and second-generation high-temperature superconducting tape
  • Preparation method of second-generation high-temperature superconducting tape and second-generation high-temperature superconducting tape
  • Preparation method of second-generation high-temperature superconducting tape and second-generation high-temperature superconducting tape

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Experimental program
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Effect test

Embodiment 1

[0027] A method for preparing a second-generation high-temperature superconducting tape, comprising the following steps:

[0028] S1. Select a metal ductile base tape with a buffer layer as a substrate, and deposit a superconducting thin film with a certain thickness on its surface. buffer layer with CeO 2 / MgO / Y 2 O 3 / Al-O biaxial texture buffer layer, the metal ductile baseband is C276 nickel-based superalloy, and the length of the metal ductile baseband is 50 meters. The GdBCO superconducting thin film was deposited in situ on the substrate by pulsed laser deposition technology, and the thickness of the superconducting thin film was 1000 nm.

[0029] S2: A roll-to-roll dynamic femtosecond infrared laser etching system is used to etch a certain density of lattice patterns on the surface of the superconducting film, and the lattice patterns cover the entire superconducting film. The roll-to-roll dynamic femtosecond infrared laser etching system is an existing structure, ...

Embodiment 2

[0035] A method for preparing a second-generation high-temperature superconducting tape, comprising the following steps:

[0036] S1: Select a metal ductile base tape with a buffer layer as a substrate, and deposit a superconducting thin film with a certain thickness on its surface. The buffer layer is with LaMnO 3 / MgO / Y 2 O 3 / Al-O biaxial texture buffer layer, the metal ductile baseband is C276 nickel-based superalloy, and the length of the metal ductile baseband is 1500 meters. The YBCO superconducting thin film was deposited on the substrate by pulsed laser deposition technology, and the thickness of the superconducting thin film was 100 nm.

[0037]S2: A roll-to-roll dynamic femtosecond infrared laser etching system is used to etch a certain density of lattice patterns on the surface of the superconducting film, and the lattice patterns cover the entire superconducting film. The roll-to-roll dynamic femtosecond infrared laser etching system is an existing structure, ...

Embodiment 3

[0042] A method for preparing a second-generation high-temperature superconducting tape, comprising the following steps:

[0043] S1: Select a metal ductile base tape with a buffer layer as a substrate, and deposit a superconducting thin film with a certain thickness on its surface. buffer layer with CeO 2 / YSZ / Y 2 O 3 The biaxial texture buffer layer, the metal ductile baseband is C276 nickel-based superalloy, and the length of the metal ductile baseband is 500 meters. The EuBCO superconducting thin film was deposited on the substrate by pulsed laser deposition technology, and the thickness of the superconducting thin film was 1000 nm.

[0044] S2: A roll-to-roll dynamic femtosecond infrared laser etching system is used to etch a certain density of lattice patterns on the surface of the superconducting film, and the lattice patterns cover the entire superconducting film. The roll-to-roll dynamic femtosecond infrared laser etching system is an existing structure, including...

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Abstract

The invention discloses a preparation method of a second-generation high-temperature superconducting tape, which comprises the following steps of: S1, selecting a metal tough base band with a buffer layer as a substrate, and depositing a superconducting thin film with a certain thickness on the surface of the substrate; s2, a reel-to-reel dynamic femtosecond infrared laser etching system is adopted to etch a dot-matrix pattern with a certain density on the surface of the superconducting thin film, and the dot-matrix pattern covers the whole superconducting thin film; s3, depositing a superconducting thick film on the etched surface; and S4, plating a silver protection layer and a copper stable layer on the surface of the superconducting thick film. According to the second-generation high-temperature superconducting strip prepared through the preparation method, 77K self-field critical current attenuation is smaller than 5%, the irreversible compression strain obtained in a liquid nitrogen temperature zone and below through a U-Spring technology test is not lower than 0.8%, the standard deviation of the critical current retention rate under the compression strain of 0.8% is smaller than 5%, the batch stability is remarkably improved, and the production cost is reduced. The problem that irreversible compression strain stability of a second-generation high-temperature superconducting strip is poor can be solved.

Description

technical field [0001] The invention relates to the technical field of superconducting materials, in particular to a preparation method of a second-generation high-temperature superconducting tape and a second-generation high-temperature superconducting tape. Background technique [0002] The second-generation high-temperature superconducting tape is a kind of practical superconducting material with rare earth barium copper oxide (REBCO, RE is rare earth element) as the core functional layer. Compared with other practical superconducting materials, the second-generation high-temperature superconducting tapes have the advantages of high transition temperature, high current-carrying capacity, and high irreversible field, and have been demonstrated in many fields such as medical, military, and energy. [0003] The superconducting equipment made of the second generation HTS tapes will experience complex electromagnetic loads during service. Since the intrinsic property of the R...

Claims

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Application Information

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IPC IPC(8): H01B12/06
CPCH01B12/06Y02E40/60H10N60/0801H10N60/0632H10N60/0521H10N60/203H10N60/0688
Inventor 赵跃郭春江武悦陈思侃朱佳敏吴蔚金之俭
Owner SHANGHAI JIAO TONG UNIV