| 초록 |
Ceramic additive manufacturing (AM) technologies have attracted much attention since 1990 to overcome the forming limit of ceramics because of their both hardness and brittleness and to reduce time of forming process. AM is a fabrication process that used digital information from a computer-aided design file to stack 2D layers of various materials to produce a 3D object, without requiring any part-specific tooling. AM technologies have attracted much attention in various fields such as medicine, automotive, aerospace, consumer, and other industrial applications. However, there are still limitations in both selection of materials as well as controlling part performance. In the former case, polymers and metals are typically used as materials for high precision AM whereas the technology for ceramics is comparatively inadequate yet. In the latter case, functionality of 3D structure was controlled only by designing 3D architectures, however we can expect much advanced functionality by using multi-materials for AM process. To this purpose, our group has developed a novel AM processes based on both material extrusion and photopolymerization for multi-ceramic AM. The fabrication system and processing has been successfully optimized for various types of materials. We could co-print multi-component in one structure using less amount of ceramic slurry with high resource efficiency. We could control cross-contamination between multi components by adapting novel washing process. We believe that this new technology may provide big turning point to overcome limitation of traditional ceramic forming process. |
