研究熔盐体系的各种物理化学性质及电解制备金属,相图是非常必要的。由于稀土元素分离提纯及实验时测定相图的困难,至今只能见到某些稀土氯化物的二元相图,而含稀土的三元氯化物体系相图的报道甚少。NdCl_3-BaCl-LiCl三元相图尚未见到文献报道。本文测定了该三元体系的相图。其相关的二元体系相图,文献[1,2]已有报道,NdCl_3-LiCl与BaCl_2-LiCl体系均属简单 It is very necessary to study various physicochemical properties of molten salt system and electrolytically prepare metal and phase diagram. Due to the difficulties in separating and purifying rare earth elements and determining the phase diagram during the experiment, only the binary phase diagram of some rare earth chlorides can be seen so far. However, rare earth-containing ternary chloride system phase diagrams are rarely reported. NdCl_3-BaCl-LiCl ternary phase diagram has not been reported in the literature. This article measured the ternary system of the phase diagram. Its related binary system phase diagram, the literature [1,2] has been reported, NdCl_3-LiCl and BaCl_2-LiCl system are simple