DETERMINATION OF PrCl_3-NaCl-LiCl PHASE DIAGRAM

摘要

PrCl₃-NaCl-LiCl phase diagram has been constructed from the phase diagrams of itssub-binary systems and of six quasi-binary systems measured by DTA technique.It is foundthat this ternary system is composed of five liquidus surfaces,seven second crystallizationlines,two peritectic points and one eutectie point.The temperatures and compositions ofinvariant points are as follows:P₁（416℃,30.3 mol% NaCl,44.2 mol% LiCl,25.5 mol%PrCl₃）;P₂（409℃,25.0 mol% NaCl,50.0 mol% LiCl,25.0 mol% PrCl₃）;E（404℃,20.0mol% NaCl,55.4 mol% LiCl,24.6 mol% PrCl₃）.