Superconducting joints using multifilament MgB2 wires for MRI application

被引：17
|
作者：
Patel, Dipak [1 ,2 ]
Matsumoto, Akiyoshi [2 ]
Kumakura, Hiroaki [2 ]
Maeda, Minoru [3 ]
Kim, Sun-Hu [4 ]
Liang, Hao [1 ]
Yamauchi, Yusuke [5 ,6 ,7 ]
Choi, Seyong [3 ]
Kim, Jung Ho [8 ]
Hossain, Md Shahriar A. [1 ,5 ]
机构：
[1] Univ Queensland, Sch Mech & Min Engn, St Lucia, Qld 4067, Australia
[2] Natl Inst Mat Sci NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan
[3] Kangwon Natl Univ, Dept Elect Engn, Kangwon 25913, South Korea
[4] Kyungpook Natl Univ, Dept Elect Engn, Daegu 41566, South Korea
[5] Univ Queensland, Australian Inst Bioengn & Nanotechnol AIBN, St Lucia, Qld 4072, Australia
[6] Natl Inst Mat Sci NIMS, JST ERATO Yamauchi Mat Space Tecton Project, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
[7] Natl Inst Mat Sci NIMS, Int Ctr Mat Nanoarchitecton WPI MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan
[8] Univ Wollongong, Inst Superconducting & Elect Mat, Australian Inst Innovat Mat, North Wollongong, NSW 2500, Australia
来源：
SCRIPTA MATERIALIA | 2021年 / 204卷
关键词：
Magnesium diboride; MgB2 superconducting joint; Multifilament MgB2 wire; Critical current; MRI application;
D O I：
10.1016/j.scriptamat.2021.114156
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We present superconducting joints using 36 filaments magnesium diboride (MgB2) wires in continuation joint orientation and their characterisation results for the first time. One of the joints demonstrated the critical temperature (offset) of 34.4 K and the critical current (I-c) of 38.5 A at 10 K in self-field. Unconventional I-c behaviour of the joint was observed at 20 K in self-field when the I-c was measured in a high to a low field due to the effect of field trapping in the MgB2 bulk within the joint. Elemental mapping at the interface between the MgB2 bulk and the filament revealed oxidation, which was attributed to being responsible for reducing the I-c of the joint. This work will notably contribute towards MgB2 superconducting joint technology development for magnetic resonance imaging (MRI) application. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页数：5
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