|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
||Now On-Demand Only - Extrusion-based Additive Manufacturing of Silicon Carbide
||Ruoyu Chen, Adam T. Bratten, Joshua Rittenhouse, Haiming Wen
|On-Site Speaker (Planned)
Due to its excellent high-temperature properties and stability, silicon carbide (SiC) is a candidate material for many applications in extreme environments. However, traditional SiC manufacturing techniques are limited in geometric flexibility and accuracy, typically requiring long times and high cost. Additive manufacturing (AM) of SiC is a promising solution to current problems. In this work, an extrusion-based AM technique was used followed by a pressureless field-assisted sintering technique to produce highly dense specimens with no warpage. Microstructure characterization of green and sintered bodies manufactured using this technique was performed by scanning electron microscopy and x-ray diffraction. The effects of rheology of the printing slurry and printing parameters on the final printed specimens were investigated. Finally, a machine learning model was developed to relate printing parameters to the precision of the printed product. Our manufacturing technique is novel and feasible for production of geometrically complex SiC parts.