| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a manufacturing method of an MgB<SB>2</SB>superconductive wire material capable of simultaneously achieving lengthy wire material and high Jc necessary for making a practical superconductive wire material. <P>SOLUTION: In the manufacturing method of this MgB<SB>2</SB>superconductive wire material, first Mg primary particles and B primary particles are mixed, the B primary particles are made to be adhered/reacted on a surface of the first Mg primary particles, MgB<SB>4</SB>or MgB<SB>7</SB>is formed on a surface of the first Mg primary particles, the first Mg primary particles in which MgB<SB>4</SB>or MgB<SB>7</SB>is formed on the surface and the second Mg primary particles larger in a particle diameter than the first Mg primary particles in which MgB<SB>4</SB>or MgB<SB>7</SB>is formed on the surface are mixed, the first Mg primary particles in which MgB<SB>4</SB>or MgB<SB>7</SB>is formed on the surface are made to be adhered/reacted on the surface of the second Mg primary particles, and MgB<SB>2</SB>is made to be formd on the surface of the secondary Mg primary particles. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
