Computer Simulation of Phase seperation for CaO Al 2O 3 SiO 2 System Glass

According to the theory of crystallization chemistry, thermodynamics and kinetics, the process of droplet like phase separation of CaO Al 2O 3 SiO 2 glass was simulated by using TEM, image analyzer and computer The mathematics and logical model of phase separation was developed on the basis of phase transition theory and experiments The key factors of following logarithmic normal distribution are that critical sizes of droplet phase nuclei must change in a certain range for the droplet like phase separation controlled by the mechanism of nucleation growth; relative growth rate of droplet phase locates at 5%～10% The distribution type has no relationship to the absolute values of critical sizes when phase separation takes place, and to the droplet phase diameter when the droplet phase stops growing This simulation method leads to a new way to control nanometre structure of glass and make a noval glass materials with some special properties