High-temperature superconducting strip capable of improving thermal stability

Abstract

The invention discloses a high-temperature superconducting tape capable of improving thermal stability, which comprises a superconducting tape body and a metal reinforcing layer fixedly arranged on atleast one side of the superconducting tape body, and is characterized in that the superconducting tape body sequentially comprises a copper stabilizing layer, a substrate layer, a buffer layer, a transition layer, a superconducting layer, a silver stabilizing layer and a copper stabilizing layer from top to bottom; one surface, far away from the superconducting tape body, of at least one metal reinforcing layer is provided with an uneven surface; and the thickness of the metal reinforcing layer is 20-200 [mu]m. By implementing the method, the heat dissipation efficiency and the heat stabilityof the high-temperature superconducting tape can be improved.

Description

technical field [0001] The invention belongs to the technical field of high-temperature superconducting, in particular to a high-temperature superconducting strip material with improved thermal stability. Background technique [0002] High-temperature superconducting tape has zero resistance, low loss characteristics, high current-carrying density, complete diamagnetism and other electromagnetic properties, and has broad prospects in power applications. The second-generation high-temperature superconducting tape is a multi-layer composite structure, generally composed of a superconducting layer, a base layer, a transition layer, a stable layer, etc., and in some applications, it also has a strengthening layer. For example, in the cable application, the copper reinforcement layer is generally selected to improve the impact resistance. In the current limiter application, the stainless steel reinforcement layer is selected to increase the resistance to limit the current. [00...

AI Technical Summary

Problems solved by technology

Using a superconducting tape with a reinforcing layer can improve this problem, but the existing reinforcing layers of the tape are all smooth surfaces. When the thickness of the reinforcing layer is thin, the effect of improving thermal stability cannot be effectively achieved, and the heat dissipation efficiency is low, and the long-term The impact of high current for a long time will easily increase the temperature and accumulate a large amount of heat to cause damage. When the reinforcement layer is thick, the mechanical properties of the superconducting tape will be affected and the advantage of its small size will be reduced.

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