Architecture and Transport Properties of Multifilamentary MgB2 Strands for MRI and Low AC Loss Applications.
Architecture and Transport Properties of Multifilamentary MgB2 Strands for MRI and Low AC Loss Applications.
复制标题
用于 MRI 和低交流损耗应用的多丝 MgB2 股线的结构和传输特性。
DOI：
10.1109/tasc.2016.2632419
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Collings,EW
中科院分区：
文献类型：
--
作者：
Wan,F;Sumption,MD;Rindfleisch,MA;Tomsic,MJ;Collings,EW
由Hyper Tech，Inc.制造的标准原位型MgB 2股线，具有19-36个子元件，蒙乃尔合金外鞘和Cu中间基体。在4.2K和5 T下，典型的传输Jcs为2 × 105 A/cm ~ 2，n值为20-30。本文介绍了两种新型的MgB 2导体设计。首先，一类新的MgB 2链被设计用于磁共振成像应用。这种类型具有更高的Cu含量，旨在增强对缠绕有它的磁体的保护，并且具有更大的直径以增加临界电流。第二，一类新的低交流损耗MgB 2股高灯丝数和高电阻矩阵进行了讨论。在4.2 K和字段高达10 T的运输性能的报告。光学技术被用来研究这些MgB 2股的宏观和微观结构。
Standard in situ type MgB2strands manufactured by Hyper Tech, Inc., have 19-36 subelements, a Monel outer sheath, and a Cu interfilamentary matrix. Typical transport Jcs of the strands are 2 × 105A/cm2with n-values of 20-30 at 4.2 K and 5 T. This paper introduces two new MgB2conductor designs. First, a new class of MgB2strand is designed for magnetic resonance imaging applications. This type has a higher Cu content designed to enhance protection of a magnet wound with it, and a larger diameter to increase the critical current. Second, a new class of low ac loss MgB2strand with high filament count and a high-resistance matrix is discussed. Transport properties at 4.2 K and fields up to 10 T are reported. Optical techniques are used to study the macro and microstructures of these MgB2strands.