Title :
Fabrication and characterization of HTSC Bi(Pb)SrCaCuO 2223 precursor powders, wires and tapes
Author :
Beilin, V. ; Schieber, M. ; Yaroslavsky, Y. ; Sosonkin, I. ; Hermon, H. ; Ben-Dor, L. ; Greenberg, J.
Author_Institution :
Sch. of Appl. Sci., Hebrew Univ., Jerusalem, Israel
fDate :
6/1/1995 12:00:00 AM
Abstract :
Two sol-gel (citrates and acetates- derived) methods for the 2223 BiSCCO precursor powders and film preparation were studied. The acceleration of diffusion processes due to intimate cation mixing and homogeneity on atomic scale provides the effective shortening of the sintering time for the 2223-phase formation. In the case of fluorine-doped Bi(Pb)SCCO, single phase 2223 sample is formed after 48 h sintering at 840/spl deg/C. The multi-core composite Ag/BiSCCO highly c-axis textured tapes and multifilament wires were fabricated by slurry casting and powder-in-tube methods, respectively.<>
Keywords :
bismuth compounds; calcium compounds; casting; composite superconductors; diffusion; fluorine; high-temperature superconductors; lead compounds; materials preparation; multifilamentary superconductors; powder technology; silver; sintering; sol-gel processing; strontium compounds; superconducting tapes; superconducting thin films; superconducting transition temperature; 48 hour; 840 degC; Ag; Ag sheathing; Bi(Pb)SrCaCuO 2223 precursor; BiPbSrCaCuO:F; F-doping; HTSC; acetates; characterization; citrates; diffusion processes; fabrication; film preparation; homogeneity; intimate cation mixing; multi-core composite tapes; multifilament wires; powder-in-tube methods; powders; single phase; sintering time; slurry casting; sol-gel methods; tapes; Acceleration; Anti-freeze; Chemistry; Diffusion processes; Fabrication; Polymers; Powders; Slurries; Solid state circuits; Wires;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
