This article is cited in 2 papers

Phase transitions

Evolution of the heterogeneous structure of model sodium silicate glasses during binodal decomposition: X-ray small-angle scattering investigation

T. N. Vasilevskaya

Ioffe Institute, St. Petersburg

Abstract: The kinetics of binodal decomposition in model glasses of the Na$_2$O–SiO$_2$ system from the initial stage to the stage of the Ostwald ripening inclusive has been investigated in situ. It has been found that the spatial-temporal evolution of the heterogeneous structure during binodal decomposition has a multistage character. The characteristic size of the phase regions at each stage of the binodal decomposition varies with time according to the power law $L\sim t^{\beta}$. The values of exponents $\beta$ for different stages of the binodal decomposition are as follows: 1/20 (fluctuation stage), 1/2 (growth stage), 0 (transient stage), and 1/3 (Ostwald ripening stage). The particle size distributions for all stages of the binodal decomposition have been presented.

Received: 19.08.2013
Accepted: 02.10.2013

 English version: Physics of the Solid State, 2014, 56:4, 771–779

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