Nondiffusive coagulation of microparticles in solid-state dispersions
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An expression is derived for the size distribution of dispersed particles and other relations are derived as well, on the basis of a more general equation for the rate of change of the upper and lower limits of the size spectrum. An analysis of these relations reveals the characteristics of transition between two processes, namely from formation of a dispersed phase (crystallization) to coagulation of particles through a disperse system where no coagulation of microparticles occurs. It is shown that in many real disperse systems (dispersion-hardened alloys) microparticles grow by the mechanism of nondiffusive coagulation, the latter being limited by the rate at which atoms build up at the boundaries of particles.
KeywordsCrystallization Lower Limit Disperse Particle General Equation Disperse System
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