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Meeting MS&T21: Materials Science & Technology
Symposium Additive Manufacturing of High and Ultra-High Temperature Ceramics and Composites: Processing, Characterization and Testing
Presentation Title Innovative Route for the 3D Printing of Hybrid Silicon Carbide/Carbon Fiber Nanocomposites
Author(s) Saja M. Nabat Al-ajrash
On-Site Speaker (Planned) Saja M. Nabat Al-ajrash
Abstract Scope A novel route to fabricate SiC/C composite by utilizing preceramic polymers, stabilized polyacrylonitrile fibers, and subsequent 3D printing was introduced in this study. An allyl hydrido polycarbosilane and 1,6-hexanediol diacrylate were mixed with a photoinitiator to form a photosensitive resin. The resulting resin was loaded with distinct weight percentages of oxidized polyacrylonitrile nanofiber. After the pyrolysis, the preceramic polymer formulation converts to mainly SiC matrix while the fibers transform to reinforcing carbon fibers simultaneously within one pyrolysis cycle. The prepared precursor resin proved to have outstanding photo-curing properties and the ability to transform to the silicon carbide phase. The obtained ceramic hybrid composite was mostly dense with nearly linear shrinkage, shiny/smooth surface, and around 60% retained weight after pyrolysis. The composite appeared to have three coexisting phases including SiC, SiOC, and turbostratic carbon. The results are promising to fabricate high-temperature composites with shorter fabrication time and complex geometries.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Additive Manufacturing of Aqueous Based Silicon Nitride Suspensions via Direct Writing
Additive Manufacturing of Corrosion Resistant UHTC Materials for Chloride Salt-to-sCO2 Brayton Cycle Heat Exchangers
Additive Manufacturing of High-performance Advanced Ceramics by the Ceramic On-demand Extrusion (CODE) Process
Additive Manufacturing of Silicon Nitride Using a Slurry Approach
Additive Manufacturing of ZrB2–ZrSi2 Composites Using an Electron Beam Melting (EBM) Process
Additive Manufacturing Of ZrB2-SiC Heat Exchanger Geometries by Ceramic on Demand Extrusion
Additive Slurry Drying as a Novel Method for Realizing Large Ceramic Components Using AM
Advanced Polymer-derived (Ultra)-high-temperature Resistant Ceramics and Ceramic Nanocomposites for Additive Manufacturing
AM of UHTCs at LLNL
Binder Jet Additive Manufacturing of Novel Design, High Temperature, Ceramic Heat Exchangers
Ceramic On-demand Extrusion (CODE) of Functionally Graded ZrB2-Mo
Deposition of UHTC Coatings on Refractory Substrates by Directed Energy Methods
High Temperature Properties of Polymer-derived Ceramic Matrix Composites Fabricated via Additive Manufacturing
Innovative Route for the 3D Printing of Hybrid Silicon Carbide/Carbon Fiber Nanocomposites
Investigation of Oxidation Behavior of ZrB2-SiC Composites under Different Partial Pressures of Oxygen
Molten Chloride Salt Corrosion Testing of Ultra High Temperature Ceramics for High Temperature Heat Exchangers Fabricated by Additive Manufacturing Methods
Pathways to Additively Manufacture Ultra-high Temperature Ceramic Composites
Process Development and Optimization for The Laser Powder Bed Fusion of WC-Ni Cermet Composites
Strategies for Printing Continuous Fibers and Post-processing for Ceramic Matrix Composites (CMCs)

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