文章信息/Info

Title:

 Progress on Fabrication of MgB2 Superconducting Wires and Tapes

作者:

 王大友1; 閆果1; 王慶陽2; 潘熙鋒1; 劉國(guó)慶2; 熊曉梅2; 馮勇1; 張平祥1; 2

1. 西部超導(dǎo)材料科技股份有限公司 超導(dǎo)材料制備國(guó)家工程實(shí)驗(yàn)室，陜西 西安
2. 西北有色金屬研究院，陜西 西安

Author(s):

 WANG Dayou1;  YAN Guo1;  WANG Qingyang2;  PAN Xifeng1;  LIU Guoqing2;  XIONG Xiaomei2;  FENG Yong1;  ZHANG Pingxiang1; 2

1. National Engineering Laboratory for Superconducting Materials (NELSM), Western Superconducting Technologies Co., Ltd.,
2. Northwest Institute for Nonferrous Metal Research (NIN), Xi’an

關(guān)鍵詞:

MgB2; 超導(dǎo)線帶材; 塑性變形; 臨界電流密度

DOI:

10.7502/j.issn.1674-3962.2015.05.11

文獻(xiàn)標(biāo)志碼:

A

摘要:

MgB2超導(dǎo)線帶材在新型制冷機(jī)直接冷卻超導(dǎo)磁共振成像儀(MRI)領(lǐng)域有著良好的應(yīng)用前景。分析了實(shí)用化MgB2超導(dǎo)線帶材制備中存在的關(guān)鍵技術(shù)問題，詳細(xì)評(píng)述了MgB2超導(dǎo)線帶材粉末裝管法（包括原位法和先位法）國(guó)內(nèi)外最新研究進(jìn)展，對(duì)比分析了兩種方法制備MgB2超導(dǎo)線帶材的優(yōu)缺點(diǎn)，討論了制備過程中影響MgB2超導(dǎo)線帶材臨界電流密度、超導(dǎo)芯絲尺寸等實(shí)用化特性的關(guān)鍵因素。提出了若干進(jìn)一步提高M(jìn)gB2超導(dǎo)線帶材綜合性能的技術(shù)途徑并對(duì)實(shí)用化千米級(jí)MgB2線帶材制備技術(shù)的發(fā)展進(jìn)行了展望。

Abstract:

MgB2 superconductor has a huge potential at the application of superconducting magnets of magnetic resonance imaging (MRI) system with the operating conditions of 15~20 K and 1~2T. In this paper, we introduced the recent progress on fabrication technique of practical MgB2 superconducting wires and tapes, discussed the key factors that affect the critical current density, Jc properties of superconducting wires, and also compared the effects of drawing, rolling and hypo-extrusion process on superconducting properties of MgB2 wires. This paper will benefit developing the fabrication technique of practical kilometer MgB2 superconducting wires and tapes.