界面动力学对微重力下溶液法晶体生长的生长界面和溶解界面稳定性的影响

Effects of Interface Kinetics on the Stability of Crystal Growth Face and Dissolution Face in Crystallization from Solution under Microgravity

用一个二维的数学模型研究微重力条件下溶液法晶体生长的晶体生长界面和溶解界面的稳定性以及界面动力学对界面稳定性的影响.研究表明,不管是否考虑界面动力学效应都存在稳定的晶体生长界面和溶解界面,其形状都是上部适当后倾的适当形状的曲面.计算了在各种情况下晶体生长稳定界面和溶解稳定界面的形状.界面动力学使晶体生长稳定界面的倾斜度变小,使溶解稳定界面的倾斜度略微变小.

The stability of the shapes of crystal growth face and dissolution face in a twodimensional mathematical model of crystal growth from solution under microgravity is studied, and the effects of the interface kinetics of crystallization and dissolution on that stability are also studied. It is proved that the stable shapes of crystal growth face and dissolution face do exist, which are suitably shaped curves with their upper parts inclined backward properly no matter whether the interface kinetics is taken into account or not. The stable shapes of crystal growth faces and dissolution faces are calculated for various cases. The interface kinetics will make the inclination degree of stable crystal growth face reduce and that of stable dissolution face reduce slightly, respectively.