Enhanced Performance of Multifilamentary MgB2 Wires at a 2.5 km Scale Through Pyrene Doping

被引：1

作者：

Choi, Jun Hyuk ^{[1
]}

Lee, Dong Gun ^{[1
]}

Yoon, Gi-Yeong ^{[1
]}

Maeda, Minoru ^{[2
,3
]}

Choi, Seyong ^{[2
,3
]}

Kim, Jung Ho ^{[4
]}

机构：

[1] Sam Dong Co Ltd, Daejeon 34027, South Korea

[2] Kangwon Natl Univ, Dept Elect Engn, Gangwon 24341, South Korea

[3] Kangwon Natl Univ, Kangwon High Magnet Field Ctr, Inst Quantum Convergence Technol, Gangwon 24341, South Korea

[4] Univ Wollongong, Australian Inst Innovat Mat, Inst Superconducting & Elect Mat, North Wollongong, NSW 2522, Australia

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2024年 / 34卷 / 05期

关键词：

Carbon doping; commercial production; critical current density; pyrene; 18-multifilamentary MgB2 wire; CRITICAL-CURRENT DENSITY; FLUX-PINNING PROPERTIES; SUPERCONDUCTING PROPERTIES; CARBON; SUBSTITUTION; FIELD;

D O I：

10.1109/TASC.2024.3350605

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Carbon doping has proven to be a highly effective strategy for enhancing the electrical properties of MgB2 wires, especially under a high magnetic field. However, unreacted doping material can persist as impurities due to uneven mixing or incomplete reactions, thereby detrimentally affecting electrical properties and their uniformity. In this study, we explore the application of pyrene doping to 18-multifilamentary MgB2 wires with a total length of 2.5 kilometers. The aim of this study is to minimize residues and maximize high-field critical current properties. Our investigation includes X-ray diffraction refinement, scanning electron microscopy observations, and a comprehensive characterization of critical current properties. We are presently evaluating the viability of applying this doping material and method in large-scale commercial production.

引用

页码：1 / 4

页数：4

共 26 条

[1] Enhancement of the high-magnetic field critical current density of superconducting MgB2 by proton irradiation [J].