Interfacial phenomena and microstructural connectivity in explosively fabricated Y-Ba-Cu-O superconductors

Journal Article · Tue Mar 01 04:00:00 EST 1988 · J. Superconduct.; (United States)

DOI:https://doi.org/10.1007/BF00617947· OSTI ID:6093260

Murr, L E; Monson, T; Strasik, M; Sudarsan, U; Eror, N G; Hare, A W

Measurements of supercurrent transport and current density in explosively fabricated superconducting prototypes have been erratic, with current densities measured to be in excess of 10/sup 3/ A/cm/sup 2/. This erratic behavior appears to be related to the degree of consolidation achieved for Y-Ba-Cu-O powders and, more specifically, to the connectivity or interfacial structure at individual, contacting, superconducting particles. We have used SEM and TEM to characterize and illustrate some of these features in preliminary superconducting prototypes composed of Y-Ba-Cu-O powder channels consolidated and encapsulated in copper and aluminum matrices by explosively generated shock waves. Observations of grain boundaries and interface phase regions cast some light on the prospects for producing good connectivity through optimizing the consolidation process and process parameters as well as the elimination of surface reactions on particles prior to consolidation, or thermal effects during consolidation.

• Research Organization: Oregon Graduate Center, Beaverton (USA)
• OSTI ID: 6093260
• Journal Information: J. Superconduct.; (United States), Journal Name: J. Superconduct.; (United States) Vol. 1:1; ISSN JOUSE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COMPACTING
COMPACTS
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
EXPLOSIVE FORMING
FABRICATION
MATERIALS TESTING
MATERIALS WORKING
METALLURGY
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
POWDER METALLURGY
POWDERS
SCANNING ELECTRON MICROSCOPY
SHOCK WAVES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TESTING
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
YTTRIUM COMPOUNDS
YTTRIUM OXIDES