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Microsegregation in liquid Pb-based eutectics

Authors:	Yu. Plevachuk V. Sklyarchuk A. Yakymovych G. Gerbeth

Affiliation:	1. Department of Metal Physics, Ivan Franko National University, 8 Kyrylo and Mephodiy St., 79005 Lviv, Ukraine;2. Forschungszentrum Dresden-Rossendorf, P.O. Box 510119, 01314 Dresden, Germany;1. Gdansk University of Technology, Gdansk, Poland;2. Institute of Molecular Physics, Polish Academy of Sciences, Poznan, Poland;3. University of Athens, Athens,Greece

Abstract:	Temperature dependence of electrical conductivity, σ(T), thermoelectric power, S(T), and viscosity, η(T), of Pb-based eutectic systems was studied. Anomalous changes of thermophysical properties in liquid binary Pb_26.1Sn_73.9, Pb₄₄Bi₅₆, Pb₈₃Mg₁₇ and ternary Bi₄₆Pb₂₉Sn₂₅ eutectics occurred well above the liquidus. The temperature range of anomalies reached hundreds of degrees. The obtained results are interpreted assuming that microsegregation areas exist in the eutectic systems.

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