Normal transition and propagation Characteristics of YBCO tape
Normal transition and propagation Characteristics of YBCO tape
复制标题
YBCO带的正常转变和传播特性
DOI：
10.1109/tasc.2005.849225
复制
发表时间：
2005
影响因子：
1.8
通讯作者：
T. Saitoh
中科院分区：
文献类型：
--
作者：
A. Ishiyama;M. Yanai;T. Morisaki;H. Ueda;Y. Shiohara;T. Izumi;Y. Iijima;T. Saitoh
YBCO 胶带预计将用于未来的高温超导应用，因为它在高温和高应用磁场中具有更好的 J/sub c/ 特性。考虑超导应用中的稳定性非常重要。为了建立涂层导体的稳定性标准，通过实验和数值研究了 YBCO 样品带向正常状态的转变和正常区域传播的特性。 YBCO样品带是通过IBAD/PLD方法生产的。在 5 T 的背景磁场中，在 55 K、60 K 和 65 K 的工作温度下，根据热输入和工作电流进行了测量。将实验结果与使用基于有限元法 (FEM) 的新开发的计算机程序进行的模拟进行了比较。在计算机程序中，考虑了 YBCO 样品带的 I-V 特性。该计算机程序可以模拟正常的转变和传播现象，并验证了其有效性。通过实验和数值研究了银稳定剂的厚度对 YBCO 带瞬态热行为的影响，结果在此给出。
YBCO tape is expected to be used in future HTS applications, because it has better J/sub c/ characteristic in high temperatures and in high applied magnetic fields. It is important to consider the stability in superconducting applications. To establish the stability criterion for coated conductors, the characteristics of the transition to the normal state and normal-zone propagation in YBCO sample tapes were examined experimentally and numerically. The YBCO sample tapes were produced by IBAD/PLD method. Measurements were performed as a function of both heat input and operating current for operating temperatures of 55 K, 60 K, and 65 K in a background magnetic field of 5 T. The experimental results were compared with a simulation using a newly developed computer program based on the finite element method (FEM). In the computer program, the I-V characteristics of the YBCO sample tapes were taken into account. The computer program could simulate the normal transition and propagation phenomena and its validity was confirmed. The influence of the thickness of a Ag-stabilizer on the transient thermal behavior of YBCO tapes was examined experimentally and numerically and the results were presented here.