基于时域有限差分法的ESP玻璃的钾离子浓度分布的模拟（英文）

Simulation on Potassium Ion Concentration Profile of Engineered Stress Profile Glass by FDTD Method

由于特殊的交换离子浓度分布,工程应力分布玻璃(ESP玻璃)的强度呈现集中分布的特性。为了预测其钾离子浓度的分布,运用了时域有限差分法对其扩散过程进行数值模拟。该模拟是基于测量的扩散系数、玻璃表面浓度以及第一步交换后的钾离子浓度分布进行的。模拟计算的结果与使用能谱仪测量的实验结果相吻合。基于模拟计算的结果,讨论了ESP玻璃的强度与钾离子浓度分布的关系。

Strength of Engineered Stress Profile glass has been proved narrowly distributed owing to its particular exchanged ion profile. In order to predict the K^＋ concentration profile, Finite-Difference Time-Domain method was introduced to simulate the diffusion processes. Simulation procedures were conducted based on detected diffusion coefficients, surface concentrations, and ion profile subjected to single step ion exchange. The calculated results show a reasonable agreement with the experimental measurements （Energy Dispersive Spectroscopy）. According to the simulation results, the relation between K^＋ profile and strength performance were interpreted.