Development of high-performance iron-based superconducting wires and tapes
Development of high-performance iron-based superconducting wires and tapes
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DOI：
10.1016/j.physc.2015.05.006
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发表时间：
2015-09-15
影响因子：
1.7
通讯作者：
Ma, Yanwei
中科院分区：
文献类型：
--
作者：
Ma, Yanwei
传统的粉末管法（PIT）是制备铁基超导线材和带材的最有效的方法。在过去的几年里，特别是在122个家庭磷族化合物磁带方面取得了巨大的进展。在这里，我们回顾了一些最新的和显着的发展，使高性能的铁基带材的非原位PIT过程中，特别注意几种制造技术，以实现高场J（c）性能的核心密度的增加和织构的改善。在4.2K下，掺K的122/Ag带的实际能级输运J（c）在10 T和14 T下分别达到0.12MA/cm（2）和0.1MA/cm（2）。对于多芯122铁基线材和带材，7芯和19芯Sr-122带材在4.2 K和10 T下的最高J（c）值分别为61 kA/cm（2）和35 kA/cm（2）。最近，高J（c）Cu包覆和不锈钢/Ag双护套122带材也已被生产，以改善机械性能或热稳定性。更重要的是，可扩展的轧制工艺首次用于在122根11米长的导体带材中展示高J（c）值。(C)2015爱思唯尔B. V.保留所有权利。
Conventional powder-in-tube (PIT) method has been the most effective technique for fabricating iron-based superconducting wires and tapes. Tremendous advances have been made during the last few years, especially for 122 family pnictide tapes. Here we review some of the most recent and significant developments in making high-performance iron-based tapes by the ex-situ PIT process, paying particular attention to several fabrication techniques to realize high-field J(c) performance in terms of increase of core density and improvement of texture. At 4.2 K, the practical level transport J(c) up to 0.12 MA/cm(2) in 10 T and 0.1 MA/cm(2) in 14 T have been achieved in the K-doped 122/Ag tapes. As for multifilamentary 122 iron-based wires and tapes, the highest J(c) values reached so far are 61 kA/cm(2) and 35 kA/cm(2) at 4.2 K and 10 T, respectively for 7- and 19-core Sr-122 tapes. Recently, high J(c) Cu-cladded and stainless steel/Ag double-sheathed 122 tapes have also been produced in order to improve either mechanical properties or thermal stability. More importantly, the scalable rolling process has been used for the first time to demonstrate high J(c) values in 122 conductor tapes of 11 m in length. (C) 2015 Elsevier B.V. All rights reserved.