Slip casting of co-milled Al₂O₃-sic powder mixtures and their characterization before and after sintering against slip thickness

We have studied the slip casting of binary systems consisting of Al ₂O₃ and SiC ceramic powders. The uniformity of ceramic powder mixtures and slip cast systems in the green and sintered states were quantified with color measurements of L, a* and b*. Our results show that the a* and b* parameters varied widely from samples consisting of pure Al₂O₃ that were white and pure SiC that were black. Intimate mixing of the ceramic powders, such as obtained in a high energy planetary ball mill, was important to produce homogeneous green and sintered compacts.