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Meeting MS&T22: Materials Science & Technology
Symposium Additive Manufacturing of High and Ultra-high Temperature Ceramics and Composites: Processing, Characterization and Testing
Presentation Title Anisotropic Microstructures in Platelet-Seeded Silicon Carbide obtained via Direct Ink Writing
Author(s) Tess Marconie, Jeffrey P Youngblood, Rodney W. Trice
On-Site Speaker (Planned) Rodney W. Trice
Abstract Scope Silicon carbide (SiC) is a material of interest for many applications due to its mechanical properties, oxidation resistance, and high thermal conductivity. Colloidal processing and pressureless sintering can enable forming of complex shaped, dense SiC parts. Direct ink writing (DIW) is a colloidal processing technique where ceramic suspensions are extruded through a nozzle along a path, building up a part layer-by-layer. However, DIW is not only interesting for making complex shapes, but also for creating anisotropic microstructures by aligning particles via the forces in the print nozzle. In this work, SiC with anisotropic microstructure is created via the alignment of platelet seed particles in DIW and subsequent pressureless liquid phase sintering and annealing. The anisotropic microstructure and crystallographic texture of these materials will be explored with SEM, XRD, and EBSD. Mechanical properties of these ceramics will be explored via 4-pt flexural strength with Weibull analysis performed.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing of Chopped Fiber Ultra-High Temperature Ceramic Composites
AM of SiC:SiC Composites via Robocasting
Anisotropic Microstructures in Platelet-Seeded Silicon Carbide obtained via Direct Ink Writing
Considerations for Additive Manufacturing of Ultra-high Temperature Ceramic Composites Using Preceramic Polymers
Evaluating Extrusion Deposited Additively Manufactured Fiber-reinforced Thermoplastic Polymers as Carbon/Carbon Preforms
Heterogeneous Lattice Structure Ceramic-Refractory Metal Materials Created via Additive Manufacturing
High-temperature Performance of LCVD SiC Fiber-Reinforced CMCs
In-Bath 3D Printing of Preceramic Polymers
Laser-induced Slip Casting for Additive Manufacturing of Large Ceramic Components
Micro and Nanostructured Compositing Approaches to Green Body Strengthening of Polymer-Derived UHTC
Optimizing Functionally Graded ZrB2-Mo Components by Ceramic On-Demand Extrusion (CODE)
Oxidation Behavior of Additively Manufactured SiC-SiOC Composites
Strategies for Printing Fibers and Post-processing for Ceramic Matrix Composites (CMCs)
Structural Characterization of the 3D Printed Ceramic Composite Materials

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