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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 Deposition of UHTC Coatings on Refractory Substrates by Directed Energy Methods
Author(s) Zlatomir Apostolov, Noam Eliaz, Michael Cinibulk
On-Site Speaker (Planned) Zlatomir Apostolov
Abstract Scope Extreme environments and advanced design architectures impose increasingly demanding requirements on the survivability and manufacturability of high-speed aerial platforms. Leading edges and control surfaces carry the brunt of environmental loads and require levels of protection surpassing those of the rest of the aeroshell. Ultra-high temperature ceramics (UHTCs) are often the material of choice to serve as protective coatings; however, their durability, paired with complex surface geometry and state of the respective substrates, can create significant obstacles towards efficient coating deposition. Here we introduce a recent effort exploring the deposition of UHTC compositions as coatings on C- and SiC-based composite substrates by Directed Energy methods. Characterization of the substrates and powder feedstock, as well as preliminary melt studies of candidate compositions and blends are presented. Additionally, routes to address some of the foreseeable obstacles, as encountered in previous work by the authors and others in the field, will also be discussed.
Proceedings Inclusion? Planned: Other (journal publication, etc.; describe below)

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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