Consolidation and Plasticity of Bi-Sr-Ca-Cu-O Superconductors

Conference · Wed May 01 04:00:00 EDT 1991

OSTI ID:5690666

Nash, A. S. ^[1]; Goretta, K. C. ^[2]; Wheeler IV, R. ^[2]; Moon, B. M. ^[3]; Wu, C. -T. ^[4]; Nash, P. ^[4]

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1. Marquette Univ., Milwaukee, WI (United States)
2. Argonne National Laboratory (ANL), Argonne, IL (United States)
3. Univ. of Illinois at Urbana-Champaign, IL (United States)
4. Illinois Institute of Technology, Chicago, IL (United States)

The Bi₂Sr₂CaCu₂O_x (2212) superconductor consists of platelike grains that grow very rapidly in two directions at high temperature. The grain growth is so fast that this superconductor can not be sintered by conventional means. Densification can be achieved, however, by hot isostatic pressing or by a combination of flat rolling and sintering. Results from 2212 and 2212 + 15 wt.% Ag specimens produced by these consolidation methods are compared with those from sintering studies. Scanning and transmission electron microscopy were used to assess the mechanisms by which 2212 densities. The superconducting properties of each type of specimen were measured. It was found that only forms in which the platelike grains exhibited substantial preferred orientation were capable of carrying large amounts of current. This result has important implications to the thermomechanical processing of Bi-Sr-Ca-Cu-O superconductors.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5690666
• Report Number(s): ANL/CP--71552; CONF-9106244--2; ON: DE91015544; CNN: DMR88-09854
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COLD WORKING
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
FABRICATION
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
HOT PRESSING
MATERIALS WORKING
MECHANICAL PROPERTIES
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLASTICITY
PRESSING
SINTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY