DocumentCode
1069824
Title
Fabrication and transport properties of MgB2/(SUS316/Cu) multifilament wires
Author
Tanaka, K. ; Okada, M. ; Hirakawa, M. ; Yamada, H. ; Kumakura, H. ; Kitaguchi, H.
Author_Institution
Hitachi Res. Lab., Hitachi, Ltd., Ibaraki, Japan
Volume
14
Issue
2
fYear
2004
fDate
6/1/2004 12:00:00 AM
Firstpage
1039
Lastpage
1041
Abstract
100-m long MgB2 multifilament wires with stainless steel (SUS316)/Cu double sheath were successfully fabricated using a PIT method. No heat treatment was carried out during the processing. The Jc of the MgB2/(SUS316/Cu) multifilament wires reached 3700 A/mm2 at 4.2 K and 0 T, and up to 1000 A/mm2 at 1 T, an increase of 40% over conventional mono-core MgB2/(SUS316/Cu) tapes. The relationship between transport Jc and Vickers hardness (HV) for MgB2/(SUS316/Cu) wires with various wire diameters was investigated. The results suggest that a high-density superconductor core was possible for small filament size. The multifilament structure and densification of MgB2 core were found to be effective in improving the transport properties of MgB2 wires.
Keywords
Vickers hardness; boron alloys; copper; critical current density (superconductivity); magnesium alloys; multifilamentary superconductors; superconducting tapes; type II superconductors; (SUS316)/Cu double sheath; 1 T; 4.2 K; Cu; MgB2; MgB2 multifilament wires; PIT method; Vickers hardness; core densification; critical current density; high-density superconductor core; mono-core tapes; multifilament structure; multifilament wire fabrication; stainless steel; transport Jc; transport properties; Fabrication; Heat treatment; Magnetic field measurement; Magnetic fields; Multifilamentary superconductors; Steel; Superconducting coils; Superconducting filaments and wires; Superconducting films; Temperature; $hbox MgB_2$ ; Critical current density; multifilament wire; stainless steel/Cu double sheath;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2004.830388
Filename
1324972
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