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A kind of coating method for growing second generation high temperature superconducting tape barrier layer composite film

A technology of high-temperature superconducting tape and barrier layer, which is applied in the usage of superconducting elements, superconducting devices, superconducting/high-conducting conductors, etc., to reduce equipment costs, reduce system components, and increase the coating area.

Active Publication Date: 2021-10-19
SHANGHAI SUPERCONDUCTOR TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the efficiency and cost of the second-generation high-temperature superconducting strip barrier layer coating suitable for large-scale industrial production are solved

Method used

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  • A kind of coating method for growing second generation high temperature superconducting tape barrier layer composite film
  • A kind of coating method for growing second generation high temperature superconducting tape barrier layer composite film
  • A kind of coating method for growing second generation high temperature superconducting tape barrier layer composite film

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Embodiment 1

[0084] This embodiment provides a coating method for growing a second-generation high-temperature superconducting tape barrier layer composite film, which mainly includes the following steps:

[0085] Step 1: Put the base tape that has been electropolished into a vacuum chamber and wind it on the roller and drum several times;

[0086] The base belt is one of nickel-tungsten alloy, Hastelloy or stainless steel metal base belt; due to the use of the drum structure, the friction of the system is small, and the number of winding times is much higher than that of the water-cooled plate structure. In this implementation case, the winding is 25 times;

[0087] Step 2: Pull the vacuum to 1.0*E -5 Below Torr, feed the process gas and set the process pressure;

[0088] The process gas is argon and oxygen, the process pressure is controlled by a gate valve, and the pressure is 1-10mTorr;

[0089] In this implementation case, the process pressure is 4mTorr, and the process gas flow rate ...

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Abstract

The invention provides a coating method for growing a barrier layer composite film of a second-generation high-temperature superconducting strip, comprising the following steps: S1, installing the base tape on a drive system, and adjusting the vacuum degree of the coating environment; S2, turning on the drive system, Carry out forward tape running; open the cathode system, prepare the first barrier layer after target washing and coating, and close the cathode system and drive system after completion; S3, open the drive system, and carry out reverse tape running; open the cathode system, wash After target and coating, the second barrier layer is made, and the cathode system and drive system are closed after completion. The invention effectively reduces the friction of the system, increases the coating area of ​​the strip, improves the production efficiency, and reduces the manufacturing cost of the strip; at the same time, the preparation of the composite film layer through the reciprocating motion reduces the evacuation time; one cavity realizes the preparation of two materials , greatly reducing the equipment footprint. Therefore, it is more suitable for large-scale industrial production of the second-generation high-temperature superconducting tape barrier layer composite film.

Description

technical field [0001] The invention relates to the field of superconducting coatings, in particular to a coating method for growing a barrier layer composite film of a second-generation high-temperature superconducting strip. Background technique [0002] Since the first discovery of superconductivity in the laboratory by Professor Camerin Onners of Leiden University in the Netherlands in 1911, superconducting materials and their applications have been one of the most active frontier research fields in contemporary science and technology. In January 1986, scientists Bernoz and Müller, who worked in the laboratory of International Business Machines Corporation in Zurich, Switzerland, first discovered that barium lanthanum copper oxide was a high-temperature superconductor, and soon within 1-2 years, the superconductor The critical transition temperature of , has been raised above the temperature of liquid nitrogen by various research groups around the world, thus eliminating...

Claims

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Application Information

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IPC IPC(8): C23C14/56C23C14/35C23C14/16H01B12/06
CPCC23C14/0036C23C14/165C23C14/352C23C14/562H01B12/06Y02E40/60
Inventor 程春生朱佳敏高中赫曹森刘杰姚林朋赵跃
Owner SHANGHAI SUPERCONDUCTOR TECH CO LTD
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