Kinetics of the initial stage of crystallization at a spatially inhomogeneous temperature distribution

摘要

The initial stage of crystallization in a glass whose compositionis close to the Na_2Ocentre dot2CaOcentre dot3SiO_2 sboichiometry is experimentally and theoretically investigated under spatially inhomogeneous temperature conditions.It is shown that the crystallization of this glass in an inhomogeneous temperature field is described by the nonlinear thermal conductivity equation similar to the equation accounting for the propagation of a burning front.