公开(公告)号：EP3086328A4

公开(公告)日：2017-08-30

申请号：EP14872192

申请日：2014-12-16

申请人： NAT INST FOR MATERIALS SCIENCE

发明人： KUMAKURA HIROAKI ,  MATSUMOTO AKIYOSHI ,  YE SHUJUN

IPC分类号： H01B13/00 ,  C01B35/04 ,  C01G1/00 ,  H01B12/04 ,  H01F6/06

CPC分类号： H01B12/06 ,  C01B35/04 ,  H01B13/0016 ,  H01B13/0036 ,  H01F6/06 ,  H01L39/2487

摘要： Provided are a method for manufacturing MgB 2 superconductor by pressure molding a mixture of Mg powder or MgH 2 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 MgH 2 powder, or a step of combining the B powder having the surface covered with the polycyclic aromatic hydrocarbon, with an Mg rod; and an MgB 2 superconducting wire which has high critical current density (Jc) characteristics and less fluctuation in the critical current density (Jc).

摘要翻译： 本发明的MgB 2超导体的制造方法是将Mg粉末或MgH 2粉末与B粉末的混合物加压成型，对混合物进行加热处理的方法，其包括（I）在B粉末中添加多环芳香族烃的工序， 同时将该混合物加热至高于或等于该加入时多环芳烃的熔点的温度，由此用多环芳烃覆盖B粉末的表面; （II）将表面被多环芳香族烃覆盖的B粉末与Mg粉末或MgH 2粉末混合的工序，或将表面被多环芳香族烃覆盖的B粉末与 一根镁棒; 以及具有高临界电流密度（Jc）特性和临界电流密度（Jc）波动小的MgB 2超导线。