Evaluation of Slurry Properties for Green Body Density Control in Wet Forming Processes

In wet forming processes such as slip casting and tape casting, slurry properties strongly influence green body density and final product performance. Apparent viscosity is commonly used as an indicator of particle dispersion and is generally assumed to correlate with green body density. However, cases have been reported in which the slurry with the lowest apparent viscosity does not produce the highest density. This study investigates the relationship between slurry flowability (apparent viscosity) and packing characteristics, including the packing density of sedimentation layers and filter cakes, to clarify their correlation with green body density.