Abstract Experimental results of an investigation of crystallization of calcium sulfate dihydrate by potentiometry, conductometry, redoxmetry and photometry are presented and discussed. The chemical species participating in the crystallization process are determined and the dominant role of CaSO40 complexes is demonstrated. It is found that: (1) spontaneous homogeneous crystallization kinetics follows linear dependence on absolute supersaturation, which is characteristic of diffusion-controlled crystals growth, (2) the induction period for nucleation the interfacial tension of the nuclei 7.04 mJ/m2 and 9.69 mJ/m2, and (3) the abrupt change in the interfacial tension occurs when initial concentrations (Ca2+)0 ≈ (SO42−)0 and is associated with the recharging of the micelle that can aggregate to form a transitional amorphous phase.

中文翻译：

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水溶液中二水硫酸钙的成核和晶体生长：溶液组分的形态、生长动力学和界面张力

摘要 介绍和讨论了用电位法、电导法、氧化还原法和光度法研究二水硫酸钙结晶的实验结果。确定了参与结晶过程的化学物质，并证明了 CaSO40 复合物的主导作用。发现：（1）自发均匀结晶动力学与绝对过饱和度呈线性相关，这是扩散控制晶体生长的特征，（2）成核的诱导期，晶核的界面张力为 7.04 mJ/m2 和 9.69 mJ /m2，以及 (3) 当初始浓度 (Ca2+)0 ≈ (SO42−)0 时，界面张力发生突然变化，并且与胶束的再充电有关，胶束可以聚集形成过渡非晶相。