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渗金属融盐中铬化合物的相分析,对控制渗铬工艺过程与机理的研究均有一定的实际意义。渗铬融盐中除含有大量金属铬外,同时还可能含有铬的氯化物和氧化物。但有关这些化合物的相互分离方法。似未见有文献报导。故本文对这些铬化合物的分析化学性质首先进行了比较和研究,同时讨论了数种溶剂对不同铬化合物的溶解作用。指出用FeCl_3的盐酸溶液可选择溶解CrCl_2,用含有少量二价铬的盐酸可选择溶解CrCl_3,而Cr°和Cr_2O_3在此二溶剂中则完全不被溶解。同时指出,用稀硫酸作金属铬的选择性溶剂,即可与Cr_2O_3有效地分离。
The phase analysis of chromium compounds infiltrated by metal infiltration has some practical significance for controlling the process and mechanism of chromizing. Chromium molten salt in addition to containing a large amount of metal chromium, but also may contain chromium chloride and oxides. But about the mutual separation of these compounds. There seems no literature reports. Therefore, the analytical chemistry of these chromium compounds was first compared and studied. At the same time, the solubility of different chromium compounds by several solvents was discussed. It is indicated that CrCl_2 can be selectively dissolved by hydrochloric acid solution of FeCl_3 and that of CrCl_3 by hydrochloric acid with a small amount of divalent chromium, while Cr ° and Cr_2O_3 are not dissolved at all in these two solvents. Also pointed out that the use of dilute sulfuric acid as a selective solvent of chromium metal, Cr_2O_3 can be effectively separated.