Abstract

AbstractIsothermal internal reactions of the type A + B = AB taking place in a crystal matrix C are studied experimentally. The matrix crystal C is NiO, A = CaO, B = TiO2 (NiTiO3) and the reaction product AB is the perovskite CaTiO3. Both the morphology of the reaction product and the kinetics of its formation have been investigated and are discussed in the light of a previous theoretical study. In addition, chemical diffusivities of Ca‐ and Ti‐ions in the NiO‐matrix are determined.

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