Title :
Fabrication and properties of Bi-2223 tapes
Author :
Fischer, B. ; Kautz, S. ; Leghissa, M. ; Neumuller, H.-W. ; Arndt, T.
Author_Institution :
Corp. Technol., Siemens AG, Erlangen, Germany
fDate :
6/1/1999 12:00:00 AM
Abstract :
Bi-2223 tapes in different variations represent a good basis to build up prototypes for power applications. With respect to these applications we produce 55 filament tapes of lengths up to 600 m carrying currents of 57 A. A statistical analysis confirms reproducibility and quality. In 1 m samples the critical current density reaches 40 kA/cm/sup 2/. An overview of the fabrication process of the tapes is given. Besides the mechanical and microstructural properties of different Ag/Ag-alloy tapes we present the current carrying capability in different magnetic fields and at different temperatures. Additionally the tapes are characterized regarding to their AC losses. These tapes of long lengths are used to fabricate power transmission cables, transformers and motors.
Keywords :
bismuth compounds; calcium compounds; critical current density (superconductivity); high-temperature superconductors; lead compounds; materials preparation; multifilamentary superconductors; statistical analysis; strontium compounds; superconducting tapes; thermomechanical treatment; 1 m; 57 A; 600 m; AC losses; Ag; Ag/Ag-alloy tapes; Bi-2223 tapes; BiPbSrCaCuO; critical current density; current carrying capability; fabrication; mechanical properties; microstructural properties; motors; overview; power applications; power transmission cable; statistical analysis; transformers; Critical current density; Fabrication; Magnetic fields; Magnetic properties; Mechanical factors; Power transmission; Prototypes; Reproducibility of results; Statistical analysis; Temperature;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
