Effect of cold-working on the critical current density of Ag-sheathed Ba2YCu3O6+x tapes
Effect of cold-working on the critical current density of Ag-sheathed Ba2YCu3O6+x tapes
复制标题
冷加工对Ag护套Ba2YCu3O6 x带材临界电流密度的影响
DOI：
10.1088/0953-2048/2/2/004
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Shojiro Ochiai
中科院分区：
文献类型：
--
作者：
K. Osamura;T. Takayama;Shojiro Ochiai
当采用压制或冷轧技术制备银包套带材时，临界电流密度随冷加工程度的增加而增大，也就是说，与带材厚度呈正相关。临界电流密度的提高归因于织构化的晶粒结构、高致密化等结构细化。发现压制是一种比冷轧更有效的技术。在本研究中，临界电流密度在4.2 K时的最佳值为11400 A/cm²。
The critical current density increased with increasing the degree of cold-working, that is, a positive correlation was observed with tape thickness, when the Ag-sheathed tapes were prepared by either the pressing or cold-rolling technique. The improvement of critical current density was attributed to the structural refinements such as textured grain structure, high densification and so on. Pressing was found to be a more effective technique than cold-rolling. The best value of the critical current density in the present study was 11400 A cm-2 at 4.2 K.