Superconducting Properties of Reacted Mono- and Multifilament MgB2 Wires with Respect to Bending Diameters Using a Custom-Made Bending Test Probe

Byeongha Yoo; Jung Bin Song; Jong Cheol Kim; Young Gyun Kim; Jiman Kim; Kihong Sim; Iksang Shin; Duck Young Hwang; Haigun Lee

doi:10.1109/TASC.2018.2798581

Superconducting Properties of Reacted Mono- and Multifilament MgB2 Wires with Respect to Bending Diameters Using a Custom-Made Bending Test Probe

Byeongha Yoo, Jung Bin Song, Jong Cheol Kim, Young Gyun Kim, Jiman Kim, Kihong Sim, Iksang Shin, Duck Young Hwang, Haigun Lee

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

In this paper, the superconducting properties of reacted mono- and multifilament MgB₂ wires were investigated with regards to the bending diameter via a three-point bending test using a lab-made bending test probe. The wires were manufactured by Kiswire Advanced Technology Co., Ltd. According to the results of the bending test, the tolerable bending diameters for mono- and multifilament MgB₂ wires were 30 and 160 mm, respectively. In addition, the multifilament wire at a bending diameter of 150 mm showed the existence of a resistive zone caused by the 'disconnection' of the MgB₂ filaments due to microcracks developed across the entire wire along the transverse direction of the filament. Monofilament wires have the potential to be utilized in most superconducting applications in terms of bending diameter, whereas the bending properties of multifilament wires require improvement to facilitate the design and fabrication of multifilament MgB₂ magnets.

Original language	English
Article number	8400806
Journal	IEEE Transactions on Applied Superconductivity
Volume	28
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2018.2798581
Publication status	Published - 2018 Apr

Keywords

Bending diameter
MgB2
bending test
mono and multifilamentary superconductors

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TASC.2018.2798581

Cite this

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title = "Superconducting Properties of Reacted Mono- and Multifilament MgB2 Wires with Respect to Bending Diameters Using a Custom-Made Bending Test Probe",

abstract = "In this paper, the superconducting properties of reacted mono- and multifilament MgB2 wires were investigated with regards to the bending diameter via a three-point bending test using a lab-made bending test probe. The wires were manufactured by Kiswire Advanced Technology Co., Ltd. According to the results of the bending test, the tolerable bending diameters for mono- and multifilament MgB2 wires were 30 and 160 mm, respectively. In addition, the multifilament wire at a bending diameter of 150 mm showed the existence of a resistive zone caused by the 'disconnection' of the MgB2 filaments due to microcracks developed across the entire wire along the transverse direction of the filament. Monofilament wires have the potential to be utilized in most superconducting applications in terms of bending diameter, whereas the bending properties of multifilament wires require improvement to facilitate the design and fabrication of multifilament MgB2 magnets.",

keywords = "Bending diameter, MgB2, bending test, mono and multifilamentary superconductors",

author = "Byeongha Yoo and Song, {Jung Bin} and Kim, {Jong Cheol} and Kim, {Young Gyun} and Jiman Kim and Kihong Sim and Iksang Shin and Hwang, {Duck Young} and Haigun Lee",

note = "Funding Information: Manuscript received August 28, 2017; accepted January 23, 2018. Date of publication January 26, 2018; date of current version February 20, 2018. This work was supported by the Materials and Components Technology Development Program of KEIT (10053590, Development of MgB2 wire and coil with a high critical current and long length for superconducting medical electric power equipment). (Corresponding author: Haigun Lee.) B. Yoo, J. C. Kim, Y.-G. Kim, and H. Lee are with the Department of Material Science and Engineering, Korea University, Seoul 02841, South Korea (e-mail: haigunlee@korea.ac.kr). Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",

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journal = "IEEE Transactions on Applied Superconductivity",

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AU - Yoo, Byeongha

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AU - Kim, Jiman

AU - Sim, Kihong

AU - Shin, Iksang

AU - Hwang, Duck Young

AU - Lee, Haigun

N1 - Funding Information: Manuscript received August 28, 2017; accepted January 23, 2018. Date of publication January 26, 2018; date of current version February 20, 2018. This work was supported by the Materials and Components Technology Development Program of KEIT (10053590, Development of MgB2 wire and coil with a high critical current and long length for superconducting medical electric power equipment). (Corresponding author: Haigun Lee.) B. Yoo, J. C. Kim, Y.-G. Kim, and H. Lee are with the Department of Material Science and Engineering, Korea University, Seoul 02841, South Korea (e-mail: haigunlee@korea.ac.kr). Publisher Copyright: © 2002-2011 IEEE.

PY - 2018/4

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N2 - In this paper, the superconducting properties of reacted mono- and multifilament MgB2 wires were investigated with regards to the bending diameter via a three-point bending test using a lab-made bending test probe. The wires were manufactured by Kiswire Advanced Technology Co., Ltd. According to the results of the bending test, the tolerable bending diameters for mono- and multifilament MgB2 wires were 30 and 160 mm, respectively. In addition, the multifilament wire at a bending diameter of 150 mm showed the existence of a resistive zone caused by the 'disconnection' of the MgB2 filaments due to microcracks developed across the entire wire along the transverse direction of the filament. Monofilament wires have the potential to be utilized in most superconducting applications in terms of bending diameter, whereas the bending properties of multifilament wires require improvement to facilitate the design and fabrication of multifilament MgB2 magnets.

AB - In this paper, the superconducting properties of reacted mono- and multifilament MgB2 wires were investigated with regards to the bending diameter via a three-point bending test using a lab-made bending test probe. The wires were manufactured by Kiswire Advanced Technology Co., Ltd. According to the results of the bending test, the tolerable bending diameters for mono- and multifilament MgB2 wires were 30 and 160 mm, respectively. In addition, the multifilament wire at a bending diameter of 150 mm showed the existence of a resistive zone caused by the 'disconnection' of the MgB2 filaments due to microcracks developed across the entire wire along the transverse direction of the filament. Monofilament wires have the potential to be utilized in most superconducting applications in terms of bending diameter, whereas the bending properties of multifilament wires require improvement to facilitate the design and fabrication of multifilament MgB2 magnets.

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Superconducting Properties of Reacted Mono- and Multifilament MgB2 Wires with Respect to Bending Diameters Using a Custom-Made Bending Test Probe

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