Studies on the non rare earth oxide superconductors fabricated by sintering

Conference · Wed Mar 01 04:00:00 EST 1989 · IEEE Trans. Magn.; (United States)

OSTI ID:6090576

Sekine, H; Inoue, K; Maeda,; Numata, K; Mori, K; Yamamoto, H

Wire and tape specimens of the Bi-(Pb)-Sr-Ca-Cu-O material as well as bulk ones have been prepared. Studies on the superconducting properties as well as metallurgical studies have been made for these specimens. The results of the thermogravimetric analysis indicated that the phase transformation which accompanies absorption of oxygen does not occur in this material from 860/sup 0/C down to 400/sup 0/C. Tape specimens prepared by a combination of cold work and sintering showed J/sub c/ of 1100A/cm/sup 2/ at 77K with a good reproductivity. In these tape specimens, c axis of the grains tends to align perpendicularly to the tape surface. A 1330-filament Bi-Pb-Sr-Ca-Cu-O wire with a Ag matrix has been successfully fabricated. This multifilamentary wire showed high-T/sub c/ transitions when sintered at relatively low temperature. It has turned out that the concentration of Pb in the oxide must be controlled (reduced) before the packing into a Ag sheath for the superconducting phase to be formed in a long wire. The results of this study indicate that the Bi-Sr-Ca-Cu-O system material has several favourable features which could make practical use of this material possible.

• Research Organization: 9309390; Advanced Technology Research Center, Mitsubishi Heavy Industries, LTD., 1-8-1, Sachiura, Kanazawa-ku, Yokohama (JP)
• OSTI ID: 6090576
• Report Number(s): CONF-880812-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: 25:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
656100 -- Condensed Matter Physics-- Superconductivity
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHEMICAL ANALYSIS
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FABRICATION
GRAVIMETRIC ANALYSIS
HIGH TEMPERATURE
LEAD
LOW TEMPERATURE
METALLURGY
METALS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POWDER METALLURGY
QUANTITATIVE CHEMICAL ANALYSIS
SINTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING WIRES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMAL ANALYSIS
THERMAL GRAVIMETRIC ANALYSIS
TRANSITION ELEMENT COMPOUNDS
WIRES