Superconducting joints using multifilament MgB2 wires for MRI application

D Patel, A Matsumoto, H Kumakura, M Maeda, SH Kim… - Scripta Materialia, 2021 - Elsevier
We present superconducting joints using 36 filaments magnesium diboride (MgB 2) wires in
continuation joint orientation and their characterisation results for the first time. One of the …

MgB2 Superconducting Joint Architecture with the Functionality to Screen External Magnetic Fields for MRI Magnet Applications

D Patel, A Matsumoto, H Kumakura… - … Applied Materials & …, 2022 - ACS Publications
A superconducting joint architecture to join unreacted carbon-doped multifilament
magnesium diboride (MgB2) wires with the functionality to screen external magnetic fields …

Progress on the Fabrication of Superconducting Wires and Tapes via Hot Isostatic Pressing

Z Lei, C Yao, W Guo, D Wang, Y Ma - Materials, 2023 - mdpi.com
Fabrication of high-performance superconducting wires and tapes is essential for large-
scale applications of superconducting materials. The powder-in-tube (PIT) method involves …

Disorder anisotropy of layered structure in multi-band MgB2 superconducting materials with high critical current performance

M Maeda, JH Choi, JC Knott, JH Kim, G Hahn… - Journal of Alloys and …, 2023 - Elsevier
Layered crystal structures of various materials form through strong in-plane covalent and
weaker out-of-plane bonding. The different bonding states can lead to the appearance of …

Significant enhancement of the critical current of MgB2 wires through a reduction of the diameter using HIP method

D Gajda, A Morawski, AJ Zaleski, T Cetner, W Häßler… - Scripta Materialia, 2018 - Elsevier
We have succeeded in the fabrication of high–J c MgB 2 wires applying hot isostatic
pressure process through a reduction of the wire diameter. The results show that annealing …

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

D Patel, A Matsumoto, H Kumakura, Y Hara… - Journal of Magnesium …, 2024 - Elsevier
The development of superconducting joining technology for reacted magnesium diboride
(MgB 2) conductors remains a critical challenge for the advancement of cryogen-free MgB 2 …

Tailored joint fabrication process derived ultra-low resistance MgB2 superconducting joint

D Patel, A Matsumoto, H Kumakura, G Nishijima… - Scripta Materialia, 2020 - Elsevier
We report an ultra-low resistance superconducting joint using unreacted multifilament MgB 2
wires produced by tailoring the powder compaction pressure within the joint with heat …

Effect of extrusion ratios on microstructural evolution, textural evolution, and grain boundary character distributions of pure copper tubes during hydrostatic extrusion

J Lee, H Jeong, S Park - Materials Characterization, 2019 - Elsevier
This study fabricated Cu tubes by hydrostatic extrusion at various extrusion ratios from 2.7 to
6.5 at ambient temperature and then investigated the effects of the extrusion ratios on the …

Analysis Method of High-Field Pinning Centers in NbTi Wires and MgB2 Wires

D Gajda - Journal of Low Temperature Physics, 2019 - Springer
The main purpose of this article is to show an easier and more accurate method for
analyzing high-field pinning centers. Previous methods did not allow for precise analysis …

Effect of rolling speed on microstructural and microtextural evolution of Nb tubes during caliber-rolling process

J Lee, H Jeong - Metals, 2019 - mdpi.com
This study investigated the fabrication of Nb tubes via the caliber-rolling process at various
rolling speeds from 1.4 m/min to 9.9 m/min at ambient temperature, and the effect of the …