NDLI: The Bi-2223 Superconducting Wires With 200A-Class Critical Current

Content Provider	IEEE Xplore Digital Library
Author	Ayai, N. Kikuchi, M. Yamazaki, K. Kobayashi, S. Yamade, S. Ueno, E. Fujikami, N.J. Kato, T. Hayashi, K. Sato, K. Hata, R. Iihara, J. Yamaguchi, K.J. Shimoyama, J.
Copyright Year	2002
Abstract	Critical current of a silver-sheathed Bi-2223 tape using controlled-overpressure sintering has attained 201 A, which is equivalent to 493 A per 10 mm-width. The engineering current density is 21kA/cm² , while the critical current density on the total filaments area is 56 . Critical currents are also improved noticeably at low temperatures and high magnetic fields normal to the tape plane. Typical critical currents have reached 500 A at 4.2 K in 5 T and 200 A at 20 K in 10 T. The highest critical currents of long wires currently have reached 195 A for 70 m and 191 A for 178 m. The wires with 200 A-class critical current are similar in mechanical properties to 150 A-class long wires commercially produced by Sumitomo Electric using the controlled-overpressure sintering. The microstructure study has predicted far higher potential of critical current, according to the confirmed remaining issues on the 200 A-class tapes; incomplete orientation order, aggregation of alkaline earth cuprates and inter-granular Bi-2212.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3075
Ending Page	3078
Page Count	4
File Size	343149
File Format	PDF
ISSN	10518223
Volume Number	17
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting filaments and wires Critical current High temperature superconductors Current density Critical current density Mechanical factors Powders Heat treatment Manufacturing Nitrogen superconducting tapes Bismuth current density high-temperature superconductors
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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The Current Transport Properties of a 200 A-Class Bi-2223 Superconducting Wire at Various Temperatures and Magnetic Fields

Fabrication of thin-filament Bi-2223/Ag superconducting tapes

Evolution of core density of Ag-clad Bi-2223 tapes during process

Multifilamentary Bi-2223 composite tapes made by a metallic precursor route

Filament bridging and critical current density variation in the cross-section of multifilamentary Bi-2223/Ag tapes

Influence of modification of annealing and sheath materials on critical current density of Bi-2223/Ag tapes

Microstructure and J/sub c/ improvements in overpressure processed Ag-sheathed Bi-2223 tapes

The effects of drawing parameters on sausaging and critical current density of Bi-2223/Ag HTS wires

High critical current Ag and Ag alloy sheathed multifilament Bi-2223 tapes

The Bi-2223 Superconducting Wires With 200A-Class Critical Current

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The Current Transport Properties of a 200 A-Class Bi-2223 Superconducting Wire at Various Temperatures and Magnetic Fields

Fabrication of thin-filament Bi-2223/Ag superconducting tapes

Evolution of core density of Ag-clad Bi-2223 tapes during process

Multifilamentary Bi-2223 composite tapes made by a metallic precursor route

Filament bridging and critical current density variation in the cross-section of multifilamentary Bi-2223/Ag tapes

Influence of modification of annealing and sheath materials on critical current density of Bi-2223/Ag tapes

Microstructure and J/sub c/ improvements in overpressure processed Ag-sheathed Bi-2223 tapes

The effects of drawing parameters on sausaging and critical current density of Bi-2223/Ag HTS wires

High critical current Ag and Ag alloy sheathed multifilament Bi-2223 tapes

The Bi-2223 Superconducting Wires With 200A-Class Critical Current