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Thermomechanical processing of Ag-clad Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} superconductors

Book ·
OSTI ID:43010
Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} (2212) powders were synthesized by solid-state reaction, loaded into Ag tubes, and processed into tapes by various combinations of drawing, rolling, and heat treatment. Critical current densities > 10{sup 5} A/cm{sup 2} at 4.2 K were achieved from microstructures consisting of large, highly textured 2212 grains. Optimal microstructures were produced by specific mechanical-working conditions and heat-treatment schedules that incorporated solid state and partial-melt sintering. The relationships between processing, microstructure, and critical current density will be discussed.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
43010
Report Number(s):
CONF-9310224--; ISBN 0-87339-271-X
Country of Publication:
United States
Language:
English