V3Ga 超伝導線材における高 Ga 濃度 Cu-Ga 化合物粉末を経由した新製法
V3Ga 超伝導線材における高 Ga 濃度 Cu-Ga 化合物粉末を経由した新製法
复制标题
V3Ga超导线材高Ga浓度Cu-Ga复合粉末的新制造方法
DOI：
10.2320/jinstmet.71.959
复制
发表时间：
2007
期刊：
影响因子：
--
通讯作者：
新一 西村
中科院分区：
文献类型：
--
作者：
良光 菱沼;章弘 菊池;安男 飯嶋;孝夫 竹内;新一 西村
超导磁体系统也是先进磁约束聚变反应堆的重要组成部分之一。则需要具有较高的磁场特性，以在长期运行过程中将稳态燃烧的氘（D）-氚（T）聚变等离子体限制和维持在大间隙中。燃烧等离子体在氘氚反应过程中肯定会产生14 MeV的聚变中子，聚变中子将通过具有阻尼中子能量的大端口流并穿透到超导磁体。因此，未来聚变反应堆使用的超导材料不仅要考虑超导性能，还要考虑中子辐照性能，实现国际热核聚变反应堆（ITER）以外的聚变电站需要“低活化高场超导磁体”。与铌基材料相比，钒基超导材料的感应放射性衰减时间要短得多。我们认为 V3Ga 化合物是先进聚变反应堆“低活化和高场超导体”最有前途的材料之一。然而，目前V3Ga复合线的临界电流密度（Jc）特性不足以应用于熔合磁体应用。我们研究了一种使用高Ga含量Cu-Ga化合物的新路线PIT工艺，以提高V3Ga化合物线的超导性能。
A superconducting magnet system is also one of the important components in an advanced magnetic confinement fusion reactor. Then it is required to have a higher magnetic field property to confine and maintain the steady-state burning deuterium (D)-tritium (T) fusion plasma in the large interspace during the long term operation. Burning plasma is sure to generate 14 MeV fusion neutrons during deuterium-tritium reaction, and fusion neutrons will be streamed and penetrated to superconducting magnet through large ports with damping neutron energy. Therefore, it is necessary to consider carefully not only superconducting property but also neutron irradiation property in superconducting materials for use in a future fusion reactor, and a “low activation and high field superconducting magnet” will be required to realize the fusion power plant beyond International Thermonuclear Experimental Reactor (ITER). V-based superconducting material has a much shorter decay time of induced radioactivity compared with the Nb-based materials. We thought that the V3Ga compound was one of the most promising materials for the “low activation and higher field superconductors” for an advanced fusion reactor. However, the present critical current density (Jc) property of V3Ga compound wire is insufficient for apply to fusion magnet applications. We investigated a new route PIT process using a high Ga content Cu-Ga compound in order to improve the superconducting property of the V3Ga compound wire.