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随着钢铁工业的发展,对研究合金中单一相的数量、组成提出了迫切要求。而从合金中被分离出的相常常是几个相的混合物,为测定单一相的数量、组成,就必须将混合相进行再分离。目前较有效而又常用的手段是采用化学溶解法,但当混合相对化学试剂相对稳定性相似时要进行定量分离就困难了。 WC、Mo_2C是同属于第一类碳化物,它们对强酸、稀酸、碱溶液中的稳定性,虽然WC比Mo_2C稳定,但比较接近,因此用化学溶解法将它们分离有一定的困难。本文就WC、Mo_2C在溶液中极化行为的明显差别,用恒电位仪装置,采用定电位电解法,对此两相分离的实验进行讨论。
With the development of the steel industry, there is an urgent need to study the quantity and composition of single phases in the alloy. However, the phase separated from the alloy is often a mixture of several phases. To determine the number and composition of single phases, the mixed phase must be reisolated. Currently more effective and commonly used means of chemical dissolution, but when the relative stability of mixed relative chemical reagents similar to quantitative separation difficult. WC and Mo_2C belong to the same kind of carbides. Their stability to strong acid, dilute acid and alkaline solution is similar to that of Mo_2C. However, it is difficult to separate them by chemical dissolution method. In this paper, WC, Mo_2C polarization behavior in solution significantly different, with a potentiostat device, using potentiostatic electrolysis, the two-phase separation experiments are discussed.