Recent Advances in Processing and Fabrication of Ceramic Superconductors [Book Chapter]

Balachandran, U.; Poeppel, R. B.; Ferrando, W. A.; Karmarkar, S. D.; Kerr, J.; Hesse, P. W.; Divecha, A. P.

doi:10.1007/978-94-011-2462-1_48

Recent Advances in Processing and Fabrication of Ceramic Superconductors [Book Chapter]

Conference · Sun Aug 18 04:00:00 EDT 1991 · Physics and Materials Science of High Temperature Superconductors, II

DOI:https://doi.org/10.1007/978-94-011-2462-1_48· OSTI ID:5157249

Balachandran, U. ^[1]; Poeppel, R. B. ^[1]; Ferrando, W. A. ^[2]; Karmarkar, S. D. ^[2]; Kerr, J. ^[2]; Hesse, P. W. ^[2]; Divecha, A. P. ^[2]

Argonne National Laboratory (ANL), Argonne, IL (United States)
Naval Surface Warfare Center (NSWC), Silver Spring, MD (United States)

The properties of ceramic superconductors are greatly influenced by the temperature, heating rate, pressure, and gas atmosphere used during processing and fabrication. For example, transport critical current density decreases drastically in the presence of trace amounts of CO₂ in the sintering atmosphere. The grain boundaries of samples sintered in O₂ atmospheres containing various levels of CO₂ have been thoroughly characterized by high-resolution electron microscopy. Reduced total pressure during binder removal and sintering was found to prevent decomposition of the superconductor. We have developed a low-oxygen-pressure technique for calcining precursors and sintering long lengths of wires and coils. Other advances include the improvement of critical current density and levitation force through melt-growth processing, incorporating of insulating coatings, and powder-in-tube processing of superconductors.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Conservation & Renewable Energy (CE)

DOE Contract Number:: W-31109-ENG-38

OSTI ID:: 5157249

Report Number(s):: ANL/CP-73535; CONF-910860--1; ON: DE91018548; ISBN: 978-0-7923-1619-0

Conference Information:: Journal Name: Physics and Materials Science of High Temperature Superconductors, II

Country of Publication:: United States

Language:: English

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Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
426001 -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CARBON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL CURRENT
CRYSTAL STRUCTURE
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
ELECTRON MICROSCOPY
ELEMENTS
FABRICATION
GRAIN BOUNDARIES
HIGH-TC SUPERCONDUCTORS
LEVITATION
MICROSCOPY
MICROSTRUCTURE
NONMETALS
OXIDES
OXYGEN COMPOUNDS
SEGREGATION
SINTERING
SUPERCONDUCTING COILS
SUPERCONDUCTING WIRES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
WIRES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES

Recent Advances in Processing and Fabrication of Ceramic Superconductors [Book Chapter]

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References (28)

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