公开(公告)号：US07722918B2

公开(公告)日：2010-05-25

申请号：US11506967

申请日：2006-08-17

申请人： Shrikant Narayan Ekbote ,  Gursharan Kaur Padam ,  Narinder Kumar Arora ,  Mukul Sharma ,  Ramesh Kumar Sethi ,  Mrinal Kanti Banerjee

发明人： Shrikant Narayan Ekbote ,  Gursharan Kaur Padam ,  Narinder Kumar Arora ,  Mukul Sharma ,  Ramesh Kumar Sethi ,  Mrinal Kanti Banerjee

IPC分类号： B05D5/12 ,  C04B35/45

CPC分类号： H01L39/2419 ,  H01L39/143

摘要： The present invention provides a process for the preparation of high temperature superconducting (HTS) bulk current leads capable of supplying a continuous current of more than 200 A at 77 K, at least for 2 to 4 hours without any substantial heat load to cryogen free cryocooler and other superconducting magnet systems. The superconducting bulk current leads with improved properties are prepared from an improved high temperature superconducting (HTS) bismuth based cuperate [(Bi, Pb)2Sr2Ca2Cu3O10+x] material in tube and rod shape with both end metallic contacts. To produce such a lead, the process included modification of the superconducting material with homogeneous silver addition, a step of initial sintering in a large size tube followed by crushing into powder, a step of shaping the said initially sintered tube powder into tubes and rods of different size, a step of formation of metallic contacts by a perforated silver foil sandwiched between two metal spray deposited silver at both end parts of the said tubes and rods followed by a final step of co-sintering. In the current leads obtained according to these aspects, it is possible to stably carry current more than 200 A required for energizing superconducting magnet systems.

摘要翻译： 本发明提供了一种制备高温超导（HTS）体电流引线的方法，其能够在77K下至少提供大于200A的连续电流，至少2至4小时，而对无冷冻剂的低温冷却器没有任何实质的热负荷 和其他超导磁体系统。 具有改进性能的超导体电流引线由具有两端金属触点的管和棒形状的改进的高温超导（HTS）铋基铜酸盐[（Bi，Pb）2Sr 2 Ca 2 Cu 3 O 10 + x]材料制备。 为了制造这种铅，该方法包括用均匀的银添加改性超导材料，在大尺寸管中初始烧结，然后粉碎成粉末的步骤，将所述初始烧结的管粉末成形为管和棒的步骤 不同尺寸，通过夹在两个金属喷涂沉积银之间的穿孔银箔形成金属接触的步骤，两个金属喷涂沉积的银在所述管和棒的两端部分之后是最后的共烧结步骤。 在根据这些方面获得的电流引线中，可以稳定地承载超导磁体系统激励所需的电流大于200A。