Solute dynamics in the liquid solution with stoichiometric compounds formation
2019
Abstract We show that in a binary solution in the presence of liquid phase of non-permanent composition, and a stoichiometric phase, for solute concentration exceeding some critical value, the instability mathematically described by the Cahn–Hilliard type equation can develop. Within the framework of the model system a dispersion relation is constructed. This relation allows to determine the concentration fluctuations dependence on time, and to investigate dynamics of structural factor and of amplification rate. The observed instability can explain the processes of slow non-monotonic relaxation in the glass-forming metal melts upon melting.
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