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

Technical Report · Fri Oct 01 04:00:00 EDT 1993

DOI:https://doi.org/10.2172/10192882· OSTI ID:10192882

Wu, C T; Goretta, K C; Lanagan, M T; Biondo, A C; Poeppel, R B

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 at 4.2 K of greater than 10{sup 5} A/cm{sup 2} 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 Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10192882
• Report Number(s): ANL/ET/CP--78614; CONF-931009--8; ON: DE94002347
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601
360602
360607
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
CORRELATIONS
CRITICAL CURRENT
CURRENT DENSITY
EXPERIMENTAL DATA
MICROSTRUCTURE
POWDERS
PREPARATION AND MANUFACTURE
SILVER
STRONTIUM OXIDES
STRUCTURE AND PHASE STUDIES
SUPERCONDUCTING COMPOSITES
THERMOMECHANICAL TREATMENTS