前言水盐三组分体系相图的制作方法颇多,常用的有干渣法、湿渣法、冷却法及合成复体法等。这些方法虽各有其特点,但一般说来都较繁复费时,常常既要测定平衡体系中饱和溶液的组成,且要测定平衡体系的固相组成。 E.L.Heric曾提出一种只需测定平衡体系中饱和溶液的水含量,便可制作出水盐三组分体系相图的方法,颇具特色。其原理是:若以a、b、c分别表示试样中水、盐Ⅰ和盐Ⅱ的重量百分数;以a_s,b_s,c_s分别表示已达溶解平衡的饱和溶液中的水,盐Ⅰ和盐Ⅱ的重量百分 Preface Introduction of water and salt three-component system phase diagram quite a lot, commonly used dry residue method, wet slag method, cooling method and composite complex method. Although these methods have their own characteristics, but generally more complicated and time-consuming, often both to determine the equilibrium system of saturated solution composition, and to determine the equilibrium system of solid phase composition. E.L.Heric proposed a method of measuring the water content of the saturated solution in the equilibrium system to produce the phase diagram of the water-salt three-component system. The principle is: if a, b, c, respectively, said the sample water, salt Ⅰ and salt weight percentage; with a_s, b_s, c_s respectively, has reached the equilibrium solution of saturated solution of water, salt and salt Ⅱ weight percent