Abstract
ABSTRACTIn this study, the particle dispersion state in a dense BaTiO3 slurry containing a dispersant and binder was assessed by various slurry evaluations such as particle size distribution measurement by laser diffraction, viscosity measurement, dynamic viscoelasticity measurement, and hydrostatic pressure measurement, which is a novel slurry evaluation technique developed by our group. Then, the relationship between the slurry evaluation results and the packing fraction of green sheets fabricated from these slurries was discussed. We found that the particle size distribution and the relative viscosity and yield stress by dynamic viscoelasticity measurement could not properly estimate the packing fraction of green sheets. In contrast, the hydrostatic pressure measurement was able to distinguish the particle dispersion state, and the results show an acceptable correlation with the packing fraction. The reason is that our developed method evaluates not only the initial particle dispersion state, but also its change as the particle concentration increases.
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