Novel resistive interfilamentary carbonate barriers in multifilamentary low AC loss Bi(2223)-tapes
Novel resistive interfilamentary carbonate barriers in multifilamentary low AC loss Bi(2223)-tapes
复制标题
多丝低交流损耗Bi(2223)带中的新型电阻丝间碳酸盐屏障
DOI：
10.1109/77.784894
复制
发表时间：
1999
影响因子：
1.8
通讯作者：
H. Eckelmann
中科院分区：
文献类型：
--
作者：
W. Goldacker;M. Quilitz;B. Obst;H. Eckelmann
为降低铋锶钙铜氧（BSCCO）带材中交流损耗的一个组成部分——耦合损耗，一种关于导体几何形状的新构想被提出，即在基体中引入碳酸锶电阻层。采用了两种不同的制备方法在丝间区域引入这些层，即浸涂技术和双管法。此外，基于一种类似于卢瑟福电缆的带材复合结构，开发了一种用于多丝铋（2223）带材的新型环束技术，该技术有可能实现几乎完全换位的丝材，并且具有一个中心的碳酸锶电阻芯。在扭距为10毫米的情况下实现了10千安/平方厘米的电流密度，这使得这种新型导体成为一个非常有前景的替代概念。我们报道了这些带材的制备方法和超导性能。
Reducing the coupling losses, one component of the AC losses in BSCCO tapes, a novel idea for a conductor geometry was developed introducing resistive layers of strontium carbonate in the matrix. Two different preparation methods were applied to introduce the layers in the interfilamentary section, a dip coating technique and a double tube method. Additionally a new ring bundle technique for multifilamentary Bi(2223)-tapes was developed based on a tape composite structure similar to a Rutherford cable with the possibility of realizing practically fully transposed filaments and with a central resistive strontium carbonate core. The achieved current densities of 10 kAcm/sup -2/ with a twist pitch of 10 mm qualifies this new conductor as a very promising alternative concept. We report on the preparation method and the superconducting properties of those tapes.