|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
||The Influence of Print Layer Orientation on Silicon Carbide Formed via Direct Ink Writing
||Kyle Cox, Tess Marconie, Jeffrey Youngblood, Rodney Trice
|On-Site Speaker (Planned)
Silicon carbide is a useful ceramic due to its high melting temperature and high strength. This makes it an attractive material for use in both traditional aircraft and hypersonic vehicles. In this study, additively manufactured silicon carbide, processed via direct ink writing (DIW) of a 53 vol% colloidal suspension, can achieve densities >95% through pressureless sintering. Each part was printed to have a different layer orientation, or to have the angle change between each layer. Four-point bend testing was performed to determine flexural strength of DIW parts. Weibull analysis was performed on each DIW layer configuration to determine the characteristic strength. SEM and optical microscopy were used to analyze the fracture surface.