| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Effect of Particle Morphology and Green Part Density on Microstructure Evolution and Mechanical Properties of Sintered Alumina Fabricated via Ceramic Fused Filament Fabrication (CF3) |
| Author(s) |
Kameswara Pavan Kuma Ajjarapu, Kavish Sudan, Kunal Kate |
| On-Site Speaker (Planned) |
Kameswara Pavan Kuma Ajjarapu |
| Abstract Scope |
In this work, Ceramic Fused Filament Fabrication (CF3) 3D printing process, that combines Fused Filament Fabrication (FFF) and sintering processes was used to fabricate dense alumina specimens. Spherical and irregular alumina powders were used to prepare highly-filled polymer feedstock filaments to determine how powder morphology and 3D printing parameters such as extrusion multiplier affect part density, powder packing and sintered microstructure. Green parts were printed with spherical and irregular alumina powder-filled filaments using an extrusion multiplier of 1.0. and 1.2 that corresponds to under and over-extrusion, resulting in a change in green density of 3D printed parts. All other 3D printing process parameters were kept constant. Further, the green parts were sintered at similar conditions to study the microstructural evolution and variation in mechanical properties with change in powder morphology and green part density. |