PARTICLE CROWDING ANALYSIS OF SLIP CASTING

The particle crowding index and interparticle spacing terms were calcu lated for seven alumina suspensions. The particle crowding index was u sed to interpret the casting rate for the tested alumina suspensions; the index was successfully correlated with the casting rate for cakes that produced the same modes of porosity, Unfortunately, this index co uld not be correlated with the casting rate for the particle system th at produced varied porosity as a function of composition. The interpar ticle spacing term was correlated with viscosity for particle size dis tributions between 31 and 0.1 mu m. For particle size distributions ex tended to 44 mu m, the viscosity could not be correlated with interpar ticle spacing, because the quantity of fine particles, rather than the particle packing, controlled the viscosity.