| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Hybrid Additive Manufacturing Technology Applied to Si3N4 Freeform Components Fabrication |
| Author(s) |
Anna De Marzi, Johanna Schmidt, Sarah Diener, Giorgia Franchin, Paolo Colombo |
| On-Site Speaker (Planned) |
Anna De Marzi |
| Abstract Scope |
DIW and Vat Photo-polymerization techniques have been largely developed in the past years. Their use is however limited due to the process of material consolidation itself. In order to overcome their drawbacks, the two technologies will be combined so just a thin shell of the extruded filament will need to be consolidated to maintain itself. Therefore, it’s possible to not tune the ink’s rheology is required and to deal with black ceramic particles. A suspension of silicon nitride powder in an acrylate mixture will be printed in different freeforming shapes by using a prototyped system composed of an UV LEDs array mounted over the printer head of a DIW equipment and controlled via the machine gcode path. The hybrid equipment will be shown and presented. Debinding and sintering processes were performed to remove the organic part of the structure and SEM images were taken to determine its densification. |