Powder-in-tube-processed multifilamentary Bi-(2223) tapes with silver-alloy sheaths

Journal Article · Mon Sep 01 00:00:00 EDT 1997 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.617973· OSTI ID:561997

Huetten, A; Schubert, M; Rodig, C; Schlaefer, U; Fischer, K ^[1]

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1. Inst. for Solid State and Materials Research, Dresden (Germany)

Superconducting Bi-(2223) multifilamentary tapes with Ag{sub 100{minus}x}Y{sub x} alloy sheaths, with Y = Cu, Mn and Pd, were made by the oxide-powder-in-tube technique. All resistivities of the Ag alloy sheaths exceed that of the pure Ag sheath by at least a factor of 2. The maximum resistivity was achieved for Ag{sub 99}Pd{sub 1} with {rho}{sub 77K} = 1.3 {mu}{Omega}cm. Tapes sheathed by Ag{sub 90}Cu{sub 10} exceed the critical current density, J{sub C}, of pure Ag sheathed ones. J{sub C} up to 26 kA/cm{sup 2} were achieved by pressing Ag{sub 90}Cu{sub 10} sheathed tapes during the thermo-mechanical-treatment, TMT. For thinner Ag{sub 90}Cu{sub 10} sheathed tapes up to 31 kA/cm{sup 2} were obtained employing flat rolling during TMT. Measured irreversibility lines of thin and thicker tapes with comparable J{sub C} suggest, that thicker tapes have a larger pinning strength and a better grain texture but thinner ones a better grain-to-grain connectivity.

• OSTI ID: 561997
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 5Pt1 Vol. 33; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER ALLOYS
COPPER OXIDES
CRITICAL CURRENT
FABRICATION
HIGH-TC SUPERCONDUCTORS
MANGANESE ALLOYS
PALLADIUM ALLOYS
POWER TRANSMISSION
SILVER ALLOYS
STRONTIUM OXIDES
SUPERCONDUCTING CABLES
SUPERCONDUCTING COMPOSITES