Published 1988 | Version v1
Book Metadata-only

Processing of superconducting ceramics for high critical current density

Creators

  • 1. R and D Labs.-I, Nippon Steel Corp., 1618 Ida, Nakahara, Kawasaki 211 (Japan)

Description

Two powder preparation methods, fine-milling of calcined powder and co-precipitation, were examined to improve the transport J/sub c/ of YBa/sub 2/Cu/sub 3/O/sub 7-x/ by obtaining fine-grained dense bodies. Both of the methods combined with careful processing conditions, could increase the J/sub c/ to over 1000 A/cm/sup 2/. The co-precipitated powder showed slightly better performance than the fine milled one. Inappropriate processing conditions such as over-sintering induced the J/sub c/ breakdown which was considered to be mainly due to cracking and oxygen deficiency

Additional details

Publishing Information

Publisher
Society of Petroleum Engineers.
Imprint Place
Richardson, TX (USA)
Imprint Title
Ceramic superconductors II
Journal Page Range
p. 282-293.

Conference

Title
ACS symposium on ceramic superconductors.
Dates
1-5 May 1988.
Place
Cincinnati, OH (USA).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
20054606
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BARIUM OXIDES; COPPER OXIDES; CRACKING; CRITICAL CURRENT; CURRENT DENSITY; DEFECTS; FABRICATION; GRAIN BOUNDARIES; OXYGEN; PERFORMANCE; POWDERS; REFINING; SINTERING; SUPERCONDUCTING JUNCTIONS; YTTRIUM OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; COPPER COMPOUNDS; CRYSTAL STRUCTURE; CURRENTS; DECOMPOSITION; ELECTRIC CURRENTS; ELEMENTS; MICROSTRUCTURE; NONMETALS; OXIDES; OXYGEN COMPOUNDS; PYROLYSIS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS