Abstract
Diffusion experiments using barium carbonate-alumina couples have been carried out. This work follows up a kinetic study previously published on the synthesis of BaAl 2O 4 from stoichiometric BaCO 3 + γ-Al 2O 3 powder mixtures, with formation of an intermediate compound [1]. In the current study, the formation of other barium aluminates is shown when the distances of diffusion greatly increase. After different annealing times, a complete isothermal cross section of the equilibrium phase diagram can be proposed.
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