Superconducting strand based on ReBCO high-temperature superconducting tape

Abstract

The invention belongs to the field of superconducting material and relates to a superconducting strand based on a ReBCO high-temperature superconducting tape. The superconducting strand comprises a superconducting strand core and a coating layer. The ReBCO high-temperature superconducting tape is cut into tapes which are arranged and stacked to be the superconducting strand core with circular, square or rectangular cross section; the coating layer is made of copper tapes, aluminum tapes, aluminum alloy tapes, stainless steel tapes or ReBCO coating superconducting tapes; the coating layer is rolled and coated on the superconducting strand core. A laser Ag welding technology is used for carrying out butt-seam welding on the coating tapes. The superconducting strand provided by the invention expands the application range of the coating superconductor, improves engineering current density, flexibility and mechanical strength of the superconducting wire, and is applicable to a superconducting cable, a current guide wire, and the like.

Description

technical field [0001] The invention belongs to the field of superconducting materials, in particular to a superconducting strand based on ReBCO high-temperature superconducting tape. Background technique [0002] In recent years, since the rare earth barium copper oxide (ReBCO, Re is Y, Sm or Nd) superconducting materials have higher critical current values ​​and better superconducting properties in a magnetic field, people are actively developing this type of superconducting materials. materials, especially ReBCO-coated high-temperature superconducting materials. From the perspective of economic and engineering applications, coated superconductors have more development potential, so the preparation and application of high-performance coated superconductors are technologies that advanced countries are competing to develop. Coated superconductors can be used to manufacture important power electronic devices such as superconducting cables, superconducting transformers, and s...

AI Technical Summary

Problems solved by technology

However, the current coated superconductors are all in the form of strips or plates, and their flexibility and mechanical strength are not enough in some specific applications.

Since its shape is strip or plate, the application is not very convenient

At present, there is no wire or strand of ReBCO high-temperature superconducting material. Therefore, a superconducting strand based on ReBCO high-temperature superconducting tape is needed. The cables and magnets wound with this superconducting strand have greater engineering Current density, better flexibility and greater mechanical strength, suitable for superconducting cables, current leads, etc.

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