Effect of starting precursor powders on microstructural development and critical current density properties of BSCCO 2223 tapes

Bi-2223/Ag tapes with different lead content (Pb=0.2–0.4) powders were fabricated. The microstructural development and J c properties were studied with starting precursor powder prepared in different conditions. The experimental results indicate that the variations of lead content extremely influenc...

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Bibliographic Details
Published in:Cryogenics (Guildford) 2003-10, Vol.43 (10), p.549-553
Main Authors: Ko, J.W., Yoo, J.M., Kim, Y.K., Oh, K.H., Choe, S.J., Chung, H.
Format: Article
Language:English
Subjects:
Applied sciences
Bi-2223 phase
Critical current density
Cryogenics
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Microstructure
Precursor powders
Refrigerating engineering. Cryogenics. Food conservation
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Summary:Bi-2223/Ag tapes with different lead content (Pb=0.2–0.4) powders were fabricated. The microstructural development and J c properties were studied with starting precursor powder prepared in different conditions. The experimental results indicate that the variations of lead content extremely influence the reactivity of precursor powders, which is closely related to the formation rate of 2223 phase, microstructure and J c values of Bi-2223/Ag tapes. In addition, the particle size distribution of precursor powders has a large effect on the transport properties. By optimizing these powder parameters, J c values above 60,000 A/cm 2 (77 K, 0 T) in short tapes were achieved.
ISSN:0011-2275
1879-2235
DOI:10.1016/S0011-2275(03)00161-9