Title :
Melt cast processed (MCP)-BSCCO 2212 tubes for power applications up to 10 kA
Author :
Bock, J. ; Elschner, S. ; Herrmann, P.
Author_Institution :
Hoechst AG, Frankfurt am Main, Germany
fDate :
6/1/1995 12:00:00 AM
Abstract :
The Melt Cast process (MCP) is highly flexible to manufacture BSCCO 2212 bulk parts in a large variety of shapes and dimensions. MCP also allows the integration of current contacts during the fabrication process thus leading to HTS parts which can directly be integrated into electrotechnical devices, The ease of mechanical treatment of the material by machining methods offers additional options for the MCP bulk parts. Critical current densities of 2.5-4 kA/cm/sup 2/ are obtained in selffield, about 1 kA/cm/sup 2/ are measured in full rods. High DC (6.4 kA) and AC (10 kA) transport currents are obtained in large tubes (O 70 mm, L 200 mm) at 77 K. Different prototypes and a first application, each of low loss hybrid current leads, have been produced as well as functional models for current limiting and for shielding.<>
Keywords :
bismuth compounds; calcium compounds; casting; critical current density (superconductivity); crystal growth from melt; high-temperature superconductors; strontium compounds; superconducting cables; 10 kA; 200 mm; 6.4 kA; 70 mm; 77 K; Bi/sub 2/Sr/sub 2/CaCu/sub 2/O; critical current densities; current contacts; current limiting; fabrication process; high temperature superconductor; low loss hybrid current leads; machining methods; mechanical treatment; melt cast processed BSCCO 2212 tubes; power applications; shielding; Bismuth compounds; Critical current density; Current measurement; Density measurement; Fabrication; Flexible manufacturing systems; High temperature superconductors; Machining; Manufacturing processes; Shape;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
