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Equilibrium phase diagrams in the system CuO–PbO–Ag

Published online by Cambridge University Press:  03 March 2011

H.K. Liu ,
S.X. Dou ,
M. Ionescu ,
Z.B. Shao ,
K.R. Liu  and
L.Q. Liu
H.K. Liu
Affiliation:
Centre for Superconducting & Electronic Materials, University of Wollongong. Wollongong, New South Wales 2522. Australia
S.X. Dou
Affiliation:
Centre for Superconducting & Electronic Materials, University of Wollongong. Wollongong, New South Wales 2522. Australia
M. Ionescu
Affiliation:
Centre for Superconducting & Electronic Materials, University of Wollongong. Wollongong, New South Wales 2522. Australia
Z.B. Shao
Affiliation:
Department of Chemistry, Northeast University, Shenyang, People's Republic of China
K.R. Liu
Affiliation:
Department of Chemistry, Northeast University, Shenyang, People's Republic of China
L.Q. Liu
Affiliation:
Department of Chemistry, Northeast University, Shenyang, People's Republic of China
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Abstract

Silver has played a critical role for the fabrication of metal/high temperature superconductor composites. Phase equilibrium and microstructure in the ternary PbO-CuO-Ag system have been investigated using differential thermal analysis (DTA), thermogravimetry (TG), scanning electron microscope (SEM), and x-ray diffraction (XRD) techniques. Composition versus temperature diagrams have been established for these systems in air. In the ternary CuO-PbO-Ag system, there is a eutectic reaction CuO + PbO + Ag = L at 750 °C and a composition of 12.04 mol % Ag, 16.35 mol % CuO, and 72.62 mol % PbO. Two immiscible regions near the two binary tie lines PbO-Ag and CuO-Ag were detected. No binary or ternary compound was detected in these systems. SEM and EDS results confirm the presence of two liquid phases and the eutectic point

Type
Articles
Information
Journal of Materials Research , Volume 10 , Issue 11 , November 1995 , pp. 2933 - 2937
Copyright
Copyright © Materials Research Society 1995

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References

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