Abstract
The packing density of the cakes prepared by slip casting of the alumina powder mixtures with a wide particle size distribution ranging from 0.1 to 10μm has been studied. More effective particle packing was achieved for powder mixtures consisting of two discrete size components, in which the fine particles can fill the void spaces between the coarse particles. The entire range of distribution can be divided into two regions so as to constitute a binary packing system. The ultimate packing density depended on the fraction of the finest component rather than the variety of the size distributions. The packing behavior was discussed in terms of the two different types of the packing mode.
