Method for preparing multicore TiC doped with MgB2 superconductive material by in situ method

An in-situ method and tape technology, applied in cable/conductor manufacturing, usage of superconductor elements, superconducting devices, etc. Silk is easy to produce microcracks and other problems, to achieve the effect of improving metal fluidity, good chemical inertness, and avoiding diffusion behavior
CN101728028AActive Publication Date: 2010-06-09NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Publication Date
2010-06-09

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Abstract

The invention discloses a method for preparing multicore TiC doped with MgB2 superconductive material by in situ method, including the following steps: firstly, tabulation, dry magnesium powder, high purity crystal state boron powder and nano titanium carbide powder are fully mixed to be uniform in atom quantity ratio of 1:(2-x):x, thus obtaining a tabulation compound body, wherein x is more than or equal to 0.02 and less than or equal to 0.10; secondly, rotary swaging and drawing processing are carried out to obtain single core wire rod; thirdly, secondary packaging and rotary swaging and drawing processing are carried out to obtain multicore compound sheathed wire rod in designed dimension; fourthly, high temperature sintering is carried out. The invention is reasonable in design, simple in technological step and convenient to realize, is applicable to preparing MgB2 superconductive wire rod with high critical current density in any length, reaction between superconducting phase and sheathed material is greatly reduced, and the critical current density is higher.
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Description

technical field

[0001] The invention relates to a TiC doped MgB 2 Preparation method of superconducting wire, especially relates to an in-situ method for preparing multi-core TiC doped MgB 2 The strip method. Background technique

[0002] MgB discovered in 2001 2 Superconductors have many excellent properties, such as simple structure, large coherence length, and no weak connection between grain boundaries, so they have broad potential applications in superconducting power, electronic devices, national defense, and medical instruments (especially nuclear magnetic imaging magnets). High performance MgB 2 The preparation of wire strips is a prerequisite for large-scale applications, and it is also one of the hot spots in the research of international superconducting materials in recent years. But pure MgB 2 In the absence of effective pinning centers in superconductors, the critical current density (J c ) decays rapidly with the increase of temperature and magnetic field...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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