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Meeting MS&T23: Materials Science & Technology
Symposium Additive Manufacturing of High and Ultra-high Temperature Ceramics and Composites: Processing, Characterization and Testing
Presentation Title Robocasting Sintered SiC and Alumina for Extreme Applications
Author(s) Joe Cesarano, Mathew Esquibel, Nik Ninos, Sajjad Bigham, Kashif Nawaz
On-Site Speaker (Planned) Joe Cesarano
Abstract Scope Robocasting is a specific subset of extrusion-based additive manufacturing (AM) techniques utilizing concentrated fine-particulate pastes carried in a volatile solvent medium. A review of robocasting technology and its utility for AM of dense and porous ceramics and composites will be presented. Developments for difficult-to-manufacture components fabricated for extreme applications will be highlighted. Primarily, the state-of-the-art for pressureless sintered SiC (SSiC) and alumina will be presented. Robocast SSiC is showing properties comparable to Hexaloy. Sintered density of at least 97% theoretical is repeatably attained with fine microstructures. Physical and mechanical properties of robocast SSiC will be presented. Furthermore, complex SSiC and alumina components with internal channels are being fabricated for high-temperature high-pressure and corrosion resistant heat exchangers and micro-reactors. The state-of-performance for these structures will be examined. Finally, the advantages, disadvantages, and limitations of the current state of the technology will be discussed.


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Extrusion Based 3-D Printing of Reinforced SiC Using Hydrogel Pastes
Interpenetrating Phase Heterogeneous Ceramic-refractory Metal Composite Materials Created via Additive Manufacturing
Residual Stress in Additively Manufactured Alumina via Stereolithography
Robocasting Sintered SiC and Alumina for Extreme Applications
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