FINITE-ELEMENT SIMULATION OF THE UNIAXIAL DIE PRESSING OF CERAMIC POWDER

摘要

The compaction simulation provides a valuable tool to understand the processes used in this study, mainly micro-machining and compaction with fugitive phase. Machining PSCs with a low aspect ratio was successful due to the uniformity in density distribution. Engineering the micro-surface-texture of meso-scale mixing channels was also introduced within a ceramic bulk by using a graphite fugitive phase. The geometry and positioning of the fugitive phase can be designed with the aid of FEM. The effects of powder bed dimension, fugitive phase dimension, its orientation and location on density distribution during powder compaction had been simulated. These results can help in designing the optimum geometry without introducing defects in the final sintered products.