Determination of optimum slurry evaluation method for the prediction of BaTiO3 green sheet density
| Autor: | Takamasa Mori, Naoya Iwata |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Tape casting hydrostatic pressure measurement Materials science Clay industries. Ceramics. Glass 02 engineering and technology 021001 nanoscience & nanotechnology Atomic packing factor 01 natural sciences Dispersant particle dispersion state TP785-869 0103 physical sciences Particle-size distribution Evaluation methods tape casting Ceramics and Composites Slurry Particle slurry Composite material 0210 nano-technology Dispersion (chemistry) packing fraction |
| Zdroj: | Journal of Asian Ceramic Societies, Vol 8, Iss 1, Pp 183-192 (2020) |
| ISSN: | 2187-0764 |
| Popis: | In 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. |
| Databáze: | OpenAIRE |
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