Regensburg 2000 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 24: Massive HTSL, YBCO/BSCCO Bandleiter

TT 24.9: Hauptvortrag

Freitag, 31. März 2000, 12:30–13:00, H20

Bi-2223 tape processing — •Bernhard Fischer — Ehrichstr.5, 63450 Hanau

For large scale applications in power engineering like transmission cables, transformers and motors different Bi-2223 tapes in long length are required. With respect to this applications we produce 55-filament tapes with a high strengthed matrix of lengths up to 600 m carrying currents up to 80 A (overall current density up to 10 kA/sqcm). In short-samples critical current densities over 40 kA/sqcm were measured. An overview of the fabrication process and the optimisation of different process parameters of the multifilament ary tapes are given.

Besides the mechanical and microstructural properties of different Ag-/Ag-alloy- and coated tapes we present the current carrying capability in different magnetic fields and at different temperatures as well as the AC loss characteristics of these tapes.