Thermal instability of (Bi;Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} in contact with silver

Journal Article · Mon Mar 01 04:00:00 EST 1999 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1999.0090· OSTI ID:347041

Moon, R J; Trumble, K P; Bowman, K J ^[1]

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1. School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)

The chemical and microstructural evolution of particulate (Bi, Pb)2223 in contact with pure bulk silver at 830 to 905&hthinsp;{degree}C under flowing air and Ar{endash}5{percent} O{sub 2} atmospheres has been studied. Specimens annealed under P{sub O{sub 2}} and temperature conditions for which the (Bi, Pb)2223 phase itself is stable, based on a critical assessment of the literature, revealed a silver/(Bi, Pb)2223 interface-limited reaction, producing both solid and liquid decomposition phases. The (Bi, Pb)2223 not in direct contact with silver exhibited no reaction under the same conditions. Solid silver dissolves into the (Bi, Pb)2223 incongruent liquid, facilitating the incongruent melting reaction. On cooling, equiaxed metallic silver particles precipitated uniformly throughout bulk specimens partially melted on a silver substrate. {copyright} {ital 1999 Materials Research Society.}

• OSTI ID: 347041
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 3 Vol. 14; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
COPPER COMPOUNDS
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
INTERFACES
LEAD COMPOUNDS
LEAD OXIDES
MICROSTRUCTURE
OXYGEN COMPOUNDS
PRECIPITATION
SILVER
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING COMPOSITES
SUPERCONDUCTING WIRES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 1000-4000 K