Segregation in ternary lithium-potassium-lead liquid alloys

Segregation in melts of the Li-K-Pb system was studied in the temperature range of 941–1187 K using the gamma-ray attenuation technique. It was 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 profiles of the gamma-ray linear attenuation coefficient in liquid Li 4 KPb 2 and Li 16 K 3 Pb 7 alloys were studied at two temperatures. It was shown that, upon cooling, homogeneous Li 4 KPb 2 and Li 16 K 3 Pb 7 melts reach the immiscibility region at temperatures of approximately 1045 and 1063 K, respectively.