Transport IV characterisation of MgB 2 conductor at a bend radius of 50mm
Transport IV characterisation of MgB 2 conductor at a bend radius of 50mm
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弯曲半径为 50mm 的 MgB 2 导体的输运 IV 特性
DOI：
10.1088/1742-6596/507/3/032061
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Young E
中科院分区：
文献类型：
--
作者：
Young E
在要求的弯曲半径下，最先进的mgb2多丝导体的性能对于许多应用至关重要，包括但不限于磁铁和电机。表征通常是用基准输运Ic完成的，但进一步的细节可以在本文中进行的IV特征中看到。在32 K ~ 20 K的自场温度下，对结构相同但直径不同（0.89 mm和0.45 mm）的两根导体在接收条件下变形至弯曲直径为50 mm，对应的应变分别为1.4%和0.7%。合格的0.45 mm导体在高达3 t的背景场中进一步测量，发现较小直径的导线在I c或IV特性中没有临界行为退化的迹象。
Performance of state of the art MgB 2 multifilamentary conductor at a required bend radius is essential for many applications including but not limited to magnets and motors. The characterisation is generally done with benchmark transport Ic but further detail can be seen in IV characteristics which are undertaken in this paper. Two conductors with the same architecture but different diameters, 0.89 and 0.45 mm were measured from 32 K to 20 K in self-field in conditions of as received and deformed to a 50 mm bend diameter, corresponding to strains of 1.4% and 0.7% respectively. The qualifying 0.45 mm conductor was further measured in background fields up to 3 T. The smaller diameter wire was found to have no signs of degradation of critical behaviour in I c or IV characteristics.