The stability of the stationary regime of directed crystallisation is examined qualitatively. At the interface, non-equilibrium boundary conditions are used, which means that the interface temperature is not equal to the phase transition's equilibrium temperature. Both a change in the equilibrium temperature of a phase transition during crystallisation and a change in the interface temperature affect the stability of the interface in this scenario. The regional distribution of temperature over the phases is not taken into account in this study. Stability is reduced to the analysis of a system having dispersed parameters, with the linear oscillator equation describing the interaction between them. It is demonstrated that the stationary movement of the flat contact can be unstable under a number of scenarios. Interface instability in the asymptotic scenario of quasi-equilibrium issue formulation fundamentally differs from interface instability in the case of non-equilibrium problem formulation, even in such a schematic description.
Author(S) Details
Alex Guskov
Institute of Solid State Physics of RAS, Moscow, Russia.
View Book:- https://stm.bookpi.org/NTPSR-V1/article/view/6468
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