Abstract

The paper presents a quantitative theory for the growth of multilayered scales formed of phases with variable compositions, molar volumes and diffusivities. The theory enables the determination of moving-boundary state growth kinetics for the scales formed of phases showing high non-stoichiometry. It completely describes the multilayered (multiphase) planar scale growing on pure metal and allows for the calculation of the total as well as partial reaction rates, the ratio of thickness of the phases formed and the metal concentration distribution in the scale.

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