# Superconducting joints using reacted multifilament MgB2 wires: A technology toward cryogen-free MRI magnets

https://mdr.nims.go.jp/datasets/a59dd986-4d1b-4a5e-a2a4-9c0eb5127b59

## File

- [1-s2.0-S2213956724000045-main.pdf](https://mdr.nims.go.jp/filesets/66e80bb0-996a-49f3-bff4-ee815bc011c6/download) ([Detail](https://mdr.nims.go.jp/filesets/66e80bb0-996a-49f3-bff4-ee815bc011c6.md))

## Id

a59dd986-4d1b-4a5e-a2a4-9c0eb5127b59

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-11-21T06:55:29.672265Z

## Updated at

2024-04-08T23:30:13.539513Z

## Published at

2024-04-08T23:30:13.889766Z

## Doi



## First published url

https://doi.org/10.1016/j.jma.2023.11.014

## Date published

2024-01-23

## Recorded date published

2024-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Superconducting joints using reacted multifilament MgB2 wires: A technology
    toward cryogen-free MRI magnets'
  title_type: original
  lang: en

## Description

- description: The development of superconducting joining technology for reacted magnesium
    diboride (MgB2) conductors remains a critical challenge for the advancement of
    cryogen-free MgB2-based magnets for magnetic resonance imaging (MRI). Herein,
    the fabrication of superconducting joints using reacted carbon-doped multifilament
    MgB2 wires for MRI magnets is reported. To achieve successful superconducting
    joints, the powder-in-mold method was employed, which involved tuning the filament
    protection mechanism, the powder compaction pressure, and the heat treatment condition.
    The fabricated joints demonstrated clear superconducting-to-normal transitions
    in self-field, with effective magnetic field screening up to 0.5 T at 20 K. To
    evaluate the interface between one of the MgB2 filaments and the MgB2 bulk within
    the joint, serial sectioning was conducted for the first time in this type of
    superconducting joint. The serial sectioning revealed space formation at the interface,
    potentially caused by the volume shrinkage associated with the MgB2 formation
    or the combined effect of the volume shrinkage and the different thermal expansion
    coefficients of the MgB2 bulk, the filament, the mold, and the sealing material.
    These findings are expected to be pivotal in developing MgB2 superconducting joining
    technology for MRI magnet applications through interface engineering.
  description_type: abstract
  lang: eng

## Creator

- name: Dipak Patel
  role: author
- name: Akiyoshi Matsumoto
  role: author
  orcid: https://orcid.org/0000-0002-6388-2130
  organization: National Institute for Materials Science
- name: Hiroaki Kumakura
  role: author
  orcid: https://orcid.org/0000-0001-9070-4068
  organization: National Institute for Materials Science
- name: Yuka Hara
  role: author
- name: Toru Hara
  role: author
  orcid: https://orcid.org/0000-0002-9715-6444
  organization: National Institute for Materials Science
- name: Minoru Maeda
  role: author
- name: Hao Liang
  role: author
- name: Yusuke Yamauchi
  role: author
- name: Seyong Choi
  role: author
- name: Jung Ho Kim
  role: author
- name: Md Shahriar A. Hossain
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: MgB2 superconducting joint
  schema: not_defined
- subject: MRI applications
  schema: not_defined
- subject: cryogen-free magnet
  schema: not_defined
- subject: persistent-mode operation
  schema: not_defined
- subject: MgB2 conductor
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Magnesium and Alloys
  issn: '22139567'
  volume: '12'
  issue: '1'
  start_page: 159
  end_page: 170

## Conference



## Related item



## Funding

- funder_name: National Institute for Materials Science
- identifier: LP200200689
  funder_name: Australian Research Council
- identifier: JP18F18714
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 66e80bb0-996a-49f3-bff4-ee815bc011c6
  filename: 1-s2.0-S2213956724000045-main.pdf
  content_type: application/pdf
  size: 6574259
  md5: 5289b73b522f4842e2e3e55836ec7e9f

## Thumbnail

fileset_id: 66e80bb0-996a-49f3-bff4-ee815bc011c6
filename: 1-s2.0-S2213956724000045-main.pdf