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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 Interpenetrating Phase Heterogeneous Ceramic-refractory Metal Composite Materials Created via Additive Manufacturing
Author(s) David J. Mitchell, Christopher C. Ledford, Trevor G. Aguirre, Corson L. Cramer, Steven E. Bullock, Michael M. Kirka, Michael J. Lance, Tomas Grejtak
On-Site Speaker (Planned) David J. Mitchell
Abstract Scope Refractory metals and ceramics have excellent ultra-high temperature properties, yet both typically exhibit brittle failure behavior, and refractory metals can have oxidation issues at high temperatures. Continuous fiber ceramic matrix composites (CMCs) have demonstrated that composite microstructures can provide a material with brittle reinforcing and matrix phases that exhibits damage tolerance and graceful failure behavior. However, continuous fiber CMCs are labor intensive and expensive to produce, limiting their applicability. The goal of this project was to create an interpenetrating phase composite (IPC) material of ceramic and refractory metal via additive manufacturing (AM) that demonstrated damage tolerant behavior. IPCs were fabricated from materials such as silicon carbide, zirconium diboride, tungsten and molybdenum. Refractory metal lattices were created via e-beam melting AM, then infiltrated with silicon carbide or zirconium diboride matrix by combinations of powder, polymer and vapor infiltration. The resultant structures were analyzed to identify chemical/phase composition, microstructure and materials properties.


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Additive Manufacturing of Silicon Carbide Ceramics at the Micron-/nano- Particle Size for Hypersonic Capabilities
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Anisotropic Shrinkage of Additively Manufactured Ceramics Via Stereolithography
Carbide Based Fiber Growth by Laser Chemical Vapor Deposition
Effect of Variations in Carbon Fiber Loading of Silicon Carbide and Zirconium Diboride Cmcs Through Direct Ink Writing
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
Towards Binder Jet Additive Manufacturing of High-temperature Ceramics - Understanding the Fundamentals to Overcome Processing Challenges
Vat Photopolymerization-based Additive Manufacturing of Different Non-oxide Ceramics

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