Strain tolerance and tensile strength of ag-added mono and multifilamentary (Bi, Pb)-2223/Ag tapes
Strain tolerance and tensile strength of ag-added mono and multifilamentary (Bi, Pb)-2223/Ag tapes
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添加银的单丝和复丝 (Bi, Pb)-2223/Ag 带的应变耐受性和拉伸强度
DOI：
10.1088/0953-2048/13/10/314
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发表时间：
2000
影响因子：
3.6
通讯作者：
U. Syamaprasad
中科院分区：
文献类型：
--
作者：
A. Sobha;R. Aloysius;P. Guruswamy;U. Syamaprasad
超导复合材料中的机械应变/应力会导致其输运性能下降。我们研究了添加不同百分比的 AgNO3（Ag：0-7 wt%）对单丝和复丝 (Bi, Pb)-2223/Ag 胶带的影响。当样品受到越来越大的弯曲应变时，我们在每个循环后测量了 77 K、0 T 下的临界电流 Ic，以确定 Ic 退化之前的应变极限 (eirr)。类似地，通过将样品保持在液氮内的垂直轴上并施加所需的拉伸负载，可以发现样品在拉伸模式下的应力耐受性。弯曲研究结果表明，25根丝的复丝带的eirr是单丝带的两倍，而eirr随着两种类型带中AgNO3百分比的增加而增加。发现复丝带的应力耐受性优于单丝带，并且在这两种情况下，通过添加银，其耐应力性均得到显着改善。
Mechanical strain/stress in superconducting composites leads to degradation of their transport properties. We have studied this effect on mono and multifilamentary (Bi, Pb)-2223/Ag tapes by adding different percentages of AgNO3 (Ag: 0-7 wt%). As samples were subjected to increasing bending strains, we measured the critical current Ic at 77 K, 0 T after each cycle to determine the strain limit (eirr) before degradation of Ic. Similarly, the stress tolerance of the sample under the tensile mode was found by holding the sample in a vertical axis within liquid nitrogen and by applying the desired tensile load. Bending study results show that eirr of a 25-filament multifilamentary tape is double that of a monofilamentary tape, while eirr increases with the increasing percentage of AgNO3 in both types of tape. The stress tolerance of multifilamentary tapes was found to be superior to that of monofilamentary tape and in both cases it was improved significantly by the addition of Ag.