发明名称 |
METHOD FOR MANUFACTURING MGB2 SUPERCONDUCTOR, AND MGB2 SUPERCONDUCTOR |
摘要 |
Provided are a method for manufacturing MgB2 superconductor by pressure molding a mixture of Mg powder or MgH2 powder and B powder and heat-treating the mixture, the method including (I) a step of adding a polycyclic aromatic hydrocarbon to the B powder, while heating the mixture to a temperature higher to or equal to the melting point of the polycyclic aromatic hydrocarbon at the time of this addition, and thereby covering the surface of the B powder with the polycyclic aromatic hydrocarbon; and (II) a step of mixing the B powder having the surface covered with the polycyclic aromatic hydrocarbon, with the Mg powder or the MgH2 powder, or a step of combining the B powder having the surface covered with the polycyclic aromatic hydrocarbon, with an Mg rod; and an MgB2 superconducting wire which has high critical current density (Jc) characteristics and less fluctuation in the critical current density (Jc). |
申请公布号 |
US2016314877(A1) |
申请公布日期 |
2016.10.27 |
申请号 |
US201415105114 |
申请日期 |
2014.12.16 |
申请人 |
NATIONAL INSTITUTE FOR MATERIALS SCIENCE |
发明人 |
KUMAKURA Hiroaki;MATSUMOTO Akiyoshi;YE Shujun |
分类号 |
H01B12/06;H01B13/00;C01B35/04 |
主分类号 |
H01B12/06 |
代理机构 |
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代理人 |
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主权项 |
1. A method for manufacturing MgB2 superconductor by pressure molding a mixture of Mg powder or MgH2 powder and B powder and heat-treating the mixture, the method comprising:
(I) adding a polycyclic aromatic hydrocarbon to the B powder, while heating the mixture to a temperature higher than or equal to the melting point of the polycyclic aromatic hydrocarbon at the time of this addition, and thereby covering the surface of the B powder with the polycyclic aromatic hydrocarbon; and (II) mixing the B powder having the surface covered with the polycyclic aromatic hydrocarbon, with the Mg powder or the MgH2 powder. |
地址 |
Ibaraki JP |