Improvement of critical current density for MgB2 superconducting wire due to carbon encapsulation and Mg ductility

由于碳封装和镁延展性提高了 MgB2 超导线材的临界电流密度

• 批准号: 23860050
• 负责人: MAEDA Minoru
• 金额: $ 0.25万
• 依托单位: Nihon University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23860050/
• 关键词: 超伝導材料・素子; 二硼化マグネシウム; 超伝導線; 臨界電流密度; 格子欠陥炭素、MRI; 炭素; MRI; ピレンガス; 格子欠陥

In this study, we have explored and attempted to establish an effective method to improve superconducting properties of magnesium diboride(MgB_2) wire which is a promising material for the next generation of magnetic resonance imaging(MRI) magnet. The result makes it clear that the addition of pyrene(C_<16> H_<10>) powder leads to disorder in MgB_2 lattice and an increase in irreversibility field which is one of the most important criterions for superconducting application. The findings also show that the in-field critical current density is considerably improved by carbon distribution due to pyrene gas and the ductility of coarse Mg powder.

本研究旨在探索和尝试建立一种有效的方法来提高二硼化镁（MgB_2）线材的超导性能。MgB_2线材是下一代磁共振成像（MRI）磁体的理想材料。结果表明，芘（C_<16>H_<10>）的加入导致了MgB_2晶格的无序化和不可逆场的增加，而不可逆场的增加是超导应用的重要判据之一。研究结果还表明，由于芘气体的碳分布和粗镁粉的延展性，在现场的临界电流密度显着提高。

项目成果

Superior MgB_2 Superconducting Wire Performance through Oxygen-Free Pyrene Additive

通过无氧芘添加剂实现卓越的 MgB_2 超导线性能

• DOI: 10.1143/apex.5.013101
• 发表时间: 2012
• 期刊: Applied Physics Express
• 影响因子: 2.3
• 作者: Minoru Maeda;Jung Ho Kim;Yoon-Uk Heo;et al
• 通讯作者: et al