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Properties of multifilamentary Bi(Pb)-2223/Ag wires and tapes

โœ Scribed by L Martini; C Chemelli; V Ottoboni; S Zannella

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
446 KB
Volume
33
Category
Article
ISSN
0011-2275

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โœฆ Synopsis

The fabrication of Bi(Pb)-2223 multifilamentary wires by means of the powder-in-tube method and their electric and magnetic characterization are reported. High densification and texturing degree of the ceramic and therefore high current capability of the silversheathed composites (Jo = 104 A cm-2 at 77 K, 0 T) were obtained by repeated sintering and deformation processes. Multifilamentary cables with different geometrical arrangements of the superconducting filaments inside the silver matrix were also prepared and characterized. The microstructure of Bi(Pb)-2223 filaments was analysed by SEM and Auger electron spectroscopy (AES) and correlated to the electrical properties.

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โœ K Venugopal; G Swaminathan ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 311 KB

Silver-sheathed tapes were fabricated using a Bi-2223 system. The tapes were processed to their final thickness by direct rolling as well as by repeated rolling with intermediate heat treatment. The rolling reduction rate was also varied to find its effect on the final properties. The critical curre