|About this Abstract
||MS&T21: Materials Science & Technology
||Late News Poster Session
||Hybrid Additive/Subtractive System of Ceramic Materials: Investigation of Powder, Process and Innovative Post-treatments
||Qirong Chen, Enrique Juste, Marie Lasgorceix, Fabrice Petit, Anne Leriche
|On-Site Speaker (Planned)
This work aims at developing a comprehensive understanding of the influence of powder properties and printing parameters on ceramic binder jetting. Alumina powder was used as a model material and was processed by using different routes to obtain granules with various characteristics. Granule properties, characteristics of powder beds, and process parameters were modified and optimized in order to achieve the best quality of printed parts in terms of mechanical strength, microstructure and finished surface. The work also highlights the results of post-impregnation of printed parts with ceramic slurries to enhanced the sintered density. A systematic study was carried out to assess the influence of the internal structures of printed bodies (pores distribution, morphology, pre sintered density) on impregnation efficiency. Densities up to 90% of TD are reported. Laser refining is another innovative post-treatment in the process to refine the periphery of each printed layer.