Segregation in the ternary lithium-potassium-lead liquid mixtures
R.N. Abdullaev, R.A. Khairulin, A.Sh. Agazhanov, S.V. Stankus
Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Li-K-Pb, melt, segregation, phase equilibria, gamma-ray linear attenuation coefficient
Abstract
The segregation in melts of the Li-K-Pb system in the temperature range of 941-1187 K has been studied using the gamma-ray attenuation technique. It has been shown that the addition of 28.6 at.% Pb to the liquid Li-K system is insufficient to exit the immiscibility region, the boundaries of which remain unknown. The gamma-ray linear attenuation coefficient profiles in liquid alloys Li4KPb2 and Li16K3Pb7 have been studied at two temperatures. It has been shown that during the cooling process homogeneous melts of Li4KPb2 and Li16K3Pb7 reach the immiscibility region at temperatures of about 1045 and 1063 K, respectively.
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