ABSTRACT
An α-Al2O3 powder with fine grain size and high purity was processed by cold isostatic pressing and slip casting and sintered in a dilatometer. The influence of different green microstructures on the sintering behavior was analyzed. Increasing the green density leads to higher sintered densities and faster sintering because the pore size and its coordination number decrease. The sintering path for particles packed uniformly or randomly is different. When the green density is > 57%, it is possible to sinter to almost full density at 1300°C.
