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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 Laser-induced Slip Casting for Additive Manufacturing of Large Ceramic Components
Author(s) Shawn M. Allan, Yannik Zieger, Martin Schwentenwein, Johannes Homa
On-Site Speaker (Planned) Shawn M. Allan
Abstract Scope Additive manufacturing of advanced ceramics is steadily gaining importance for a wide variety of applications. Three common obstacles for ceramic AM are 1) long debinding times, 2) limitations to relatively small geometries, and 3) limited solutions for dark, non-oxide ultrahigh temperature ceramics (UHTCs). A novel aqueous-slurry based method, laser-induced slip casting (LIS), allows printing and subsequent sintering of large and bulky components. Via infrared lithographic exposure, thermal energy is generated that partially dries the suspensions and consolidates the structure with a high green density. The method is not dependent on the color or light-absorption of the ceramic powders, allowing dark materials such as carbides and other UHTCs to be processed. LIS has been applied to alumina, solid-state sintered silicon carbide, and silicon nitride (beta-sialon), yielding densities of approximately 99%. The resulting material strength is on par with conventional forming methods such as slip-cast or pressed ceramics.

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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