Status of Bi-2223 tapes performance and development
Status of Bi-2223 tapes performance and development
复制标题
Bi-2223磁带性能及发展现状
DOI：
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发表时间：
1999
影响因子：
1.8
通讯作者：
K. Sato
中科院分区：
文献类型：
--
作者：
T. Kaneko;T. Hikata;M. Ueyama;A. Mikumo;N. Ayai;S. Kobayashi;N. Saga;K. Hayashi;K. Ohmatsu;K. Sato
我们正在开发Bi-2223超导带材，从基本的超导性能到应用用途。在超导性的基本表征中，详细研究了临界电流密度（J/sub c/）随温度和磁场的变化规律，并定义了一个新的标度律，该标度律可以在多种条件下估计J/sub c/的值。在长长度制造过程中有显著的改进。在77 K时J/sub c/大于20 kA/cm/sup 2/的1 km量级带可以重复生产。J/sub c/在整个长度上的分布非常均匀。这些结果在基本的表征和生产的进展，使它成为可能，并容易设计一个高磁场磁铁。然后，我们成功地开发了一种使用冰箱的磁铁。
We are developing Bi-2223 superconducting tapes on a wide viewpoint from fundamental superconducting property to application usage. In basic characterization of superconductivity, the behavior of critical current density (J/sub c/) in terms of both temperature and magnetic field was studied in detail and a new scaling law which can estimate the value of J/sub c/ in multiple conditions is defined. There were significant improvements in the long length fabricating process. The 1 km order length tape having J/sub c/ at 77 K over 20 kA/cm/sup 2/ can be produced reproducibly. The distribution of J/sub c/ through the whole length is very uniform. These results in both basic characterization and production progress made it possible and easy to design a high field magnet. Then, we have successfully developed a magnet using a refrigerator.