论文部分内容阅读
应用循环伏安法及计时电流法研究了低价钛离子在低碳钠电极上电结晶形核过程的规律。研究表明、往LiCl-KCl低共晶体系中,当温度为723~783K、低价钛离子浓度为1.04wt%~8.28wt%时,钛在低碳钢电极上以纯钛形式析出时存在电结晶形核过程,在电结晶形核过程中初始晶核产生的数量起主导作用,晶核长大的过程中伴随着新核的产生,晶核长大过程符合半球形三维成核长大模型,受扩散控制。在同一浓度下,钛的晶核密度随阴极过电位及温度的升高而增大。
Cyclic voltammetry and chronoamperometry were used to study the regularity of low-valent titanium ions nucleating on the low-carbon sodium electrode. The results show that when the temperature is 723-783K and the concentration of low-cost titanium ions is 1.04wt% ~ 8.28wt% in the LiCl-KCl low eutectic system, the titanium exists in the form of pure titanium precipitated on the mild steel electrode The nucleation process of electrocrystallization plays a leading role in the nucleation of nuclei in the nucleation process. The growth of nuclei is accompanied by the generation of new nuclei, and the growth of nuclei coincides with the three-dimensional nucleation and growth of hemispheres Model, controlled by proliferation. At the same concentration, the nucleation density of titanium increases with the increase of cathodic overpotential and temperature.