Regularities of formability of intermediate compounds in binary molten salt systems

摘要

The formability of intermediate compounds for thirteen kinds of binary molten salt systems, including 1 179 phase diagrams was discussed by pattern recognition method with bond parameters as features. These systems were MeX Me′X, MeX Me′X 2, MeX Me′X 3, MeX Me′X 4, MeX 2 Me′X 2, MeX 2 Me′X 3, MeX 2 Me′X 4, MeX 3 Me′X 3, MeNO 3 Me′(NO 3) 2, Me 2SO 4 Me′SO 4 (Me, Me′ denote metallic elements, X denotes halogen), Me AX B Me′ CX D (X is CrO 2- 4, WO 2- 4 or MoO 2- 4), and common cation systems MeX MeX′, MeX Me 2X′ (Me, Me′ denote metallic elements, X, X′ denote anion forming elements or radicals). It had been found that molten salt systems forming intermediate compounds and ones without intermediate compound distribute in different regions. Moreover, six general regularities for the formation of intermediate compounds in binary molten salt systems had been summarized on the basis of thirteen semi empirical models, which was obtained from the known phase diagrams.[