| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing of Ceramics and Ceramic Composites: Materials Properties, Processes, and Modeling
|
| Presentation Title |
Additive Manufacturing of Hybrid Silicon Carbide/Carbon Fiber Nano-composites |
| Author(s) |
Saja M. Nabat Al-ajrash, Charles Browning |
| On-Site Speaker (Planned) |
Saja M. Nabat Al-ajrash |
| Abstract Scope |
A novel route to fabricate a hybrid ceramic matrix composite by utilizing preceramic polymers, chopped carbon nanofiber precursors and subsequent additive manufacturing was introduced in this study. The polycarbosilane was loaded with distinct weight percentages of polyacrylonitrile nanofiber which followed by subsequent 3D printed and pyrolysis. The end objective of the pyrolysis cycle is that the polycarbosilane resin is converted into a silicon carbide matrix, with the PAN converted into reinforcing carbon nanofibers. The impact of the CNF percentages on structural and mechanical properties was investigated using scanning electron microscopy, transmission electron microscopy, and nano-indentation characterization techniques, respectively. The obtained ceramic hybrid composite was fully dense with nearly linear shrinkage and a shiny, smooth surface after pyrolysis. The ceramic matrix composite appeared to have three coexisting phases including silicon carbide, silicon oxycarbide, and turbostratic carbon. The results are promising to fabricate hybrid composites working at high temperatures with complex geometries. |