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Corrosion at nanoscale; interface barriers and phase competition

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The problem of simultaneous growth and competition of intermediate phases during reactive diffusion was analyzed by Gösele and Tu in 1982. In this work we reformulate old problem and propose method based on volume fi xed frame of reference. It allows computing the material velocity in the reacting system in which reactions at several moving interfaces occur. All reactions lead to the lattice shift due to the difference of intrinsic diffusivities and different molar volumes. The following peculiarities are taken into account: (1) the deviation from local equilibrium at both interfaces of each moving inter-phase zone (i.e., at each side of the moving phase-boundary); (2) different mobility of the components in the interphase zone; (3) nonzero steps of molar volumes for each component f[...]

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