In the present study, the incongruent dissolution of barium from barium titanate (BaTiO 3 ) has been studied as a function of dispersion pH and powder volume fraction for two different BaTiO 3 powders. In alkaline dispersions, the barium solubility strongly increases as the pH increases, as suggested by thermodynamic considerations. At pH <7, the barium solubility reaches a plateau, the height of which is dependent on the surface area of the powder and the solids loading of the slip. The BaTiO 3 surface is completely depleted of barium in this region.
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Neubrand et al. (2000) studied this question.
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