Abstract
A theoretical description of cluster growth and Ostwald ripening in viscoelastic media is developed. The relaxation of elastic strains due to the viscous properties of the matrix is accounted for by the self-diffusion coefficient of the matrix building units DM. For DM → 0 cluster growth and Ostwald ripening in an elastic (Hookian) body is included as a limiting case. The theoretical results are applied to an analysis of experimental data on Ostwald ripening of AgCl clusters in a sodium borate melt in the vicinity of the glass-transition temperature Tg. Both, qualitative and even quantitative agreement between the developed theory and the experimental results is found.
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