Centrifugal slip casting in prefabricated template was used to prepare open-cell Al2O3 foams. Aqueousα- Al2O3 slurries with up to 50% solid contents ( volume fraction) were prepared. The sedimentationof slurries during centrifugation was discussed with respect to the hydronamic conditions at large particle concentrations.The efect of solid contents on mass segregation was observed. Segregation phenomena were hinderedfor slurries with high solid loadings exceeding 50% ( volume fraction) . The dried and sintered behaviorsof samples were analyzed. The cell struts in green bodies had good particles packing and showed highgreen density ( 63. 4% theory density) . After sintered at 1 500 ℃ , the cell struts of final products had highsintered density (98. 8% theory density) and homogeneous microstructure. The porosity of final products is75. 6%