Low-cost preparing method for high-temperature superconductive coated conductor strip

Abstract

The invention provides a low-cost preparing method for a high-temperature superconductive coated conductor strip and belongs to the technical field of manufacturing of high-temperature superconductive materials. The low-cost preparing method comprises the following steps that (1) the surface of a metal base band is cleaned; (2) by the adoption of the chemical solution deposition planarization (SDP) method, an isolating layer is prepared on the metal base band; (3) by the adoption of an ion beam auxiliary radio frequency magnetron sputtering method (IBAD-MgO), a biaxial texture magnesium oxide layer is prepared on the isolating layer; (4) a lanthanum manganate layer is prepared by the adoption of the radio frequency magnetron sputtering method; (5) a cerium oxide layer is prepared by the adoption of a direct-current magnetron reactive sputtering method; (6) a superconductive layer is prepared by the adoption of a metal organic deposition decomposition method (MOD); (7) a silver protective layer is prepared by the adoption of a direct-current magnetron sputtering method; (8) annealing is conducted in high-purity oxide; (9) a copper stable layer is arranged in an electroplating mode according to use requirements. According to the low-cost preparing method for the high-temperature superconductive coated conductor strip, through comprehensive application of physical preparation methods and chemical preparation methods, high-temperature superconductive strips can be produced in a large-scale mode at low cost.

Description

technical field [0001] The invention belongs to the technical field of preparation of high-temperature superconducting coated conductor strips, and relates to a preparation method of low-cost high-temperature superconducting coated conductor strips. Background technique [0002] High-temperature superconducting coated conductor tape is one of the research hotspots in the field of high-temperature superconducting materials, and its preparation includes two parts: preparation of biaxially textured base tape and preparation of superconducting functional layer. Biaxially textured substrate preparation technology can be divided into two categories: ion beam assisted deposition technology (Ion Beam Assisted Deposition, abbreviated as IBAD) and rolling assisted biaxially textured substrates technology (Rolled Assisted Biaxially Textured Substrates, abbreviated as RABiTS). RABiTS technology has the advantages of high efficiency and simple equipment, but it has special requirements f...

AI Technical Summary

Problems solved by technology

SuperPower uses the ion beam assisted deposition method to prepare biaxial texture, and the superconducting layer is prepared by metal-organic chemical vapor deposition method. The organic source is more expensive, and the conversion rate is lower and the cost is higher.

American Superconductor Corporation uses RABiTS technology to prepare biaxial textured metal substrates. The superconducting layer is prepared by chemical solution method. RABiTS metal substrates are limited to Ni-W alloys, which are magnetic and costly.

Images