| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of High and Ultra-high Temperature Ceramics and Composites: Processing, Characterization and Testing
|
| Presentation Title |
Effect of Variations in Carbon Fiber Loading of Silicon Carbide and Zirconium Diboride Cmcs Through Direct Ink Writing |
| Author(s) |
Jonathan Kaufman, Connor Wyckoff, Benjamin Lam, Christopher Kassner, Katherine Acord, Lisa Rueschhoff |
| On-Site Speaker (Planned) |
Jonathan Kaufman |
| Abstract Scope |
Ultra-high temperature ceramics (UHTC) are a class of materials that are used for aerospace applications because of their high melting temperatures and ablation resistance. This study focuses on increasing chopped carbon fiber loading in both ZrB2 and SiC –based inks to improve fracture toughness. By using direct ink writing (DIW), a gradient of the carbon fiber is printed to minimize fibers at the surface. The effect of varied concentrations of the carbon fibers on the rheology and printability of the different inks is investigated. The different carbon fiber loadings and gradated ceramics are evaluated with oxyacetylene torch testing to study oxidation and ablation resistance. The change in fiber orientation with respect to fiber loading is analyzed by using X-ray computed tomography as a function of the matrix ceramic. |