As to indicate the effect of the le

为了表明浸出过程的影响，我们估计了从固体中分离后液相中溶解的Ba2 +含量。这些的分析结果<br>表1-3总结了各种浸出条件下的液体（溶解的Ba量与起始BaTiO3粉末中的Ba相关）。首先，浸出时间的变化直接影响溶解的Ba离子的量。表1中显示了在100℃下于0.1 M乙酸中浸出BaTiO3种子的时间依赖性的结果：通过将浸出时间从1-4 h延长，溶解的Ba量从0.74 mol％翻倍。随着Ba溶出度的增加，Ba耗尽层将充当缓冲剂。因此，在浸提24小时后，发现仅溶解2.0mol％的Ba 2+。假设从BaTiO3种子中溶解Ba离子的浸出动力学遵循以下公式。（1）根据菲克扩散定律的解：

为了说明浸出过程的效果，我们估计了从固体分离后液相中溶解的Ba2+含量。分析的结果<br>表1~3总结了各种浸出条件的液体（溶解巴的量与起始BaTiO3粉末中的Ba相关）。首先，溶解的巴离子量可直接受浸出时间变化的影响。在0.1 M醋酸中，BaTiO3种子在100+C下浸出的时间依赖性的结果见表1：溶解的Ba量通过将浸出时间从1小时延长到4小时，使溶解的Ba量从0.74倍翻倍到1.54摩尔%。随着巴溶解的增加，巴耗尽层起到缓冲作用。因此，浸出24小时后，只发现2.0 mol% Ba2+的溶解。假设BaTiO3种子中Ba离子溶解的浸出动力学遵循Eq.（1），根据菲克扩散定律的解决方案：

As to indicate the effect of the leaching process we estimated the dissolved Ba2+ content in the liquid phase after separation from the solid. The results of the analysis of theseliquids for the various leaching conditions are summarized in Tables 1–3 (the amount of dissolved Ba was correlated to the Ba in the starting BaTiO3 powder). At first, the amount of dissolved Ba ions can directly be influenced by the variation of the leaching time. The results regarding the time dependence of the leaching of BaTiO3 seeds at 100 ◦C in 0.1 M acetic acid are shown in Table 1: the dissolved Ba amount doubles from 0.74 to 1.54 mol% by prolonging the leaching time from 1 to 4 h. With increasing Ba dissolution the Ba depleted layer acts as a buffer. Thus, after leaching for 24 h a dissolution of only 2.0 mol% Ba2+ was found. Assuming the leaching kinetics of the dissolution of the Ba ions from the BaTiO3 seeds follows Eq. (1), according to the solution of Fick’s diffusion laws:<br>