利用耦合FACTSage Toxide热力学数据库的定量相场模型,本研究模拟了硅灰石(CaSiO3)在CaO-Al2O3-SiO2体系中的恒温晶体生长过程,并研究了熔体组分和温度对CaSiO3结晶过程的影响.结果表明,硅灰石的形貌主要由其表面能的各向异性所决定,而几乎不受界面动力学的各向异性所影响.此外,随着温度的降低,析出的硅灰石的生长方式由平面生长向枝晶生长方式转变,于此同时,更加精细的枝晶结构也逐渐呈现出来.模拟所得的枝晶生长速度和尖端半径与Ivanstov理论所得结果一致,和实验测得的数据也处于同一数量级.
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