Abstract
The effect of preliminary heat treatment on the kinetics of nucleation is modeled by numerical solution of the kinetic equations within the framework of standard nucleation theory. It is shown that such an approach sufficiently exactly explains the measured data of the number of nuclei for two-step annealing treatments in a Li2O · 2SiO2 melt. The measured increase of the nucleation rate after the preliminary heat treatment is ascribed to the increase of the frequency of attachment of single molecules on the nucleus surface after the temperature change.
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