Crystallization of Glass Forming Melts

摘要

A survey on the kinetics of nucleation and the mechanisms of crystal growth is given. Theoretical and experimental developments verifying the more general, non steady state formulation of the theory of nucleation are discussed. It is argued that the experimentally observed transiency in the kinetics of nucleation in glass forming systems may be due to both non steady state time lag as well as to growth effects. In order to distinguish between both cases, an analysis of the temperature dependence of the induction times, t_0~*, and a comparison with the temperature dependence of the non steady state time lag and the rates of nucleation and growth are required. Experimental results on the mechanisms of crystal growth are provided.