Development of Ag-sheathed Bi-2223 superconducting wires and their applications
Development of Ag-sheathed Bi-2223 superconducting wires and their applications
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DOI：
10.1109/77.919763
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发表时间：
2001-03
影响因子：
1.8
通讯作者：
K. Hayashi;T. Hikata;T. Kaneko;M. Ueyama;A. Mikumo;N. Ayai;S. Kobayashi;H. Takei;Ken-ichi Sato
中科院分区：
文献类型：
--
作者：
K. Hayashi;T. Hikata;T. Kaneko;M. Ueyama;A. Mikumo;N. Ayai;S. Kobayashi;H. Takei;Ken-ichi Sato
采用粉管法制备了长、高Jc（77.3K，0 T）的银包多芯BiPbSrCaCuO 2223超导线材，其Jc大于3/spl times/10/sup 4/ A/cm。对于未来的工业应用，还开发了具有高Ic的高Jc电线、高强度电线和低AC损耗电线，用于大规模磁体应用和用于AC用途的电气设备。在交流导线的情况下，为了降低导线的交流损耗，研究了扭转效应，将PVF涂层技术应用于高强度导线。PVF涂层技术使得获得具有低交流损耗的安培数并联导体成为可能，因为每根股线都是电绝缘的。随着技术的进步，我们可以制造出许多应用原型。在高安培数导体应用中，开发了电流引线和电缆导体。在磁体应用中，我们开发了由GM制冷机冷却并在20 K左右工作的扁平磁体，我们还开发了Transformer作为在液氮中工作的交流应用。
Silver-sheathed multifilamentary BiPbSrCaCuO 2223 superconducting wires with long length and high Jc of over 3/spl times/10/sup 4/ A/cm (77.3 K, 0 T) were developed by using the powder-in-tube method. For future industrial applications, high Jc with high Ic wires, high strength wires and low AC loss wires were also developed for large scale magnet applications and electric apparatus for AC use. In the case of AC conductor, twist effect was investigated in order to reduce the wire AC loss, PVF coating technology was applied to high strength wire. PVF coating technology made it possible to obtain amperage parallel conductor with low AC loss, because each strand is electrically insulated. As a progress of technology, we could fabricate many application prototypes. In the high amperage conductor application, current leads and cable conductors were developed. In the magnet application, pancake magnets cooled by GM refrigerator and operated at around 20 K were developed, We have also developed the transformer as an AC application operated in the liquid nitrogen.