About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Effect of Particle Morphology on Thixotropicity of SiC Colloidal Gel for Direct-Write Additive Manufacturing |
Author(s) |
Michael Adedamola Odunosho |
On-Site Speaker (Planned) |
Michael Adedamola Odunosho |
Abstract Scope |
Robocasting is a promising tool for fabrication of multi-functional SiC due to its capability in tuning the properties of printed structures. Previous works mostly employed small SiC particle sizes (40nm – 0.7μm) during ink formulation process because of better dispersion and faster sintering rate. However, these small particle-sized SiC powders are expensive. On the other hand, large, irregularly-shaped SiC starting powders are low-cost but they can easily agglomerate and are therefore prone to nozzle clogging and difficulty in printing. In this experiment, the milling process is used to control the particle morphology. The powder is milled at different times (3, 7, and 10 hours) and the effect of milling time on rheology (thixotropicity) of the SiC paste is studied. Lastly, factorial design of experiment with Herschel-Bulkley model is used to study the effect of milling time on thixotropicity and printability of SiC paste via different nozzle sizes. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |