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KINETICS OF THE MOTION OF THE INTERFACE DURING MUTUAL DIFFUSION IN A TWO-COMPONENT SYSTEM.

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Abstract

Kinetic calculations are performed with allowance for Kirkendall displacement of the lattice in each phase. The kinetic exclusions to phase formation with diffusion and boundary control of growth in the diffusion zone are formulated. Mutual diffusion experiments are carried out in Ni-Mo and Cu-Zn.
... It is worth mentioning that the reaction rate control, i.e. the existence of the jump of the chemical potential at the interface, also means that the interface flux is proportional to the deviation of the composition at the interface from its equilibrium value (see also the original paper [3]). Later on Geguzin et al. [5] and Gosele and Tu [6] considered the more general case, i.e. considering not only the diffusion of one of the species only, and arrived at the expression [6] dx AB /dt=G∆CK eff /(1+x AB /D), ...
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