Title :
Ultrathin ceramic insulation for Ag-sheathed high T/sub c/-superconductors
Author :
Nikulin, A.D. ; Shikov, A.K. ; Antipova, E.V. ; Khlebova, N.E. ; Erokhina, I.A. ; Akimov, I.I.
Author_Institution :
Bochvar (A.A.) All-Union Sci. Res. Inst. of Inorg. Mater., Moscow, Russia
fDate :
6/1/1995 12:00:00 AM
Abstract :
The cover materials of ultrathin ceramic insulation not thicker than 3-6 /spl mu/m were suggested for use in coil processing. This cover was used for Bi-2223/Ag composite tapes without aggravation of their critical properties. High heat resistance (up to 840/spl deg/C) and small destroy bend radius permitted one to use "wind-and-react" as well as "react-and-wind" methods for coil fabrication. Results of critical properties measurements as a function of the cover thickness for insulated Bi-2223/Ag tapes as well as some characteristics of the insulating cover are presented.<>
Keywords :
bismuth compounds; calcium compounds; ceramic insulation; composite superconductors; critical current density (superconductivity); critical currents; electron device manufacture; high-temperature superconductors; lead compounds; silver; strontium compounds; superconducting coils; superconducting device testing; superconducting tapes; superconducting transition temperature; 840 C; Ag-sheathed high temperature superconductors; Bi-2223/Ag composite tapes; Bi/sub 1.8/Pb/sub 0.4/Sr/sub 2/Ca/sub 2.2/Cu/sub 3/O-Ag; coil fabrication; coil processing; cover materials; critical current density; critical currents; critical properties; critical temperature; destroy bend radius; high heat resistance; react-and-wind method; ultrathin ceramic insulation; wind-and-react method; Ceramics; Conductive films; Conductors; Critical current density; Insulation; Microstructure; Optical microscopy; Silver; Temperature; Zirconium;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
