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Method for preparing superconducting yttrium barium copper oxide (YBCO) twisted wire through 3D printing

A technology of yttrium barium copper oxide and 3D printing, which is applied in superconducting devices, superconducting/high-conducting conductors, chemical instruments and methods, etc., can solve problems such as no related research on 3D printing technology, and achieve huge scientific research and commercial value , Reduce production cost, reduce the effect of phase forming treatment process and difficulty of twisting

Active Publication Date: 2019-12-31
LANZHOU UNIVERSITY
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  • Abstract
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Problems solved by technology

However, there is currently no relevant research on the 3D printing technology of high-temperature superconducting wires.

Method used

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  • Method for preparing superconducting yttrium barium copper oxide (YBCO) twisted wire through 3D printing
  • Method for preparing superconducting yttrium barium copper oxide (YBCO) twisted wire through 3D printing
  • Method for preparing superconducting yttrium barium copper oxide (YBCO) twisted wire through 3D printing

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Embodiment Construction

[0030] The invention discloses a method for preparing yttrium barium copper oxide superconducting stranded wire based on 3D printing:

[0031] Technical solutions:

[0032] 1. Preparation of superconducting powder precursor: The main printing material is YBCO superconducting material or mixed powder (copper oxide, yttrium oxide, barium carbonate) that can be sintered to form a superconducting phase. The printing main material is mechanically pulverized or jet pulverized or ball milled to obtain a printing powder with a particle size of 100-300nm.

[0033] 2. Preparation of printing paste: add the ground superconducting powder precursor to a suitable ratio of polymer binder and lubricant mixture to form a direct writing molding paste. The polymer binder used here can be polyethylene glycol (PVA), polyvinylpyrrolidone (PVP), polyvinyl butyral (PVB), sodium carboxymethylcellulose (CMC), etc., and the lubricating oil can be Mineral lubricants can also be used vegetable lubricant...

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Abstract

The invention discloses a method for preparing a high-temperature superconducting yttrium barium copper oxide (YBCO) twisted wire through 3D printing. The method comprises four steps of firstly, preparing a nanoscale superconducting powder precursor, then preparing printing slurry with proper viscosity and supporting characteristics, then utilizing CAD three-dimensional modeling, exporting STL format model data, and utilizing professional software for slicing, achieving one-step molding stranded wire preparation with low current loss through a twisted printing nozzle, and finally, the printedstranded wires are subjected to the processes of plastic removal, phase formation, oxygen supplementation, packaging and the like to form the practical superconducting stranded cable. The method is advantaged in that the application of the direct writing type 3D printing advanced technology in the aspect of high-temperature superconducting wires is realized for the first time, the micro-nano superconductive core wire is prepared through 3D printing, the fine wire process of the core wire is achieved, integrated design of materials and structures is achieved, the preparation process of the high-temperature superconducting wire is simplified, current-carrying performance and production efficiency of the high-temperature superconducting wire are improved, and production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of preparation of superconducting stranded wires, in particular to a preparation method of yttrium-barium-copper-oxygen superconducting stranded wires based on 3D printing. Background technique [0002] Superconducting material is one of the few metamaterials in nature, which has unique properties such as zero resistance, complete anti-flux and Joseph effect. Superconducting materials have broad application prospects in many fields such as national defense, energy, transportation, and communications, especially in superconducting power and magnets, such as superconducting current limiters, superconducting generators, superconducting filters, Superconducting energy storage, etc. Among them, the superconducting wire is the main carrying unit in superconducting applications. [0003] The high-temperature superconducting tape wires currently used are mainly the first-generation high-temperature superconducting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B12/08
CPCH01B12/08H01B12/02B33Y10/00B33Y40/10B33Y40/20B33Y70/00C04B2235/6026C04B35/4508C04B35/62254C04B2235/94C04B2235/945C04B2235/6567C04B2235/6562C04B2235/6565C04B2235/6584C04B2235/6585C04B2235/663C04B35/64C04B35/6342C04B35/63488C04B35/63444C04B35/6365C04B2235/5445Y02E40/60B28B1/001B28B11/243C01G3/006C01P2006/40
Inventor 张兴义张宝强张强强刘聪周又和
Owner LANZHOU UNIVERSITY
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