About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
American Ceramic Society Journal Awards Symposium
|
| Presentation Title |
3D Printing of Fiber-Reinforced Ultra High-Temperature Ceramics via Paste Extrusion Technique |
| Author(s) |
Saqlain Zaman, Joseph E. Munoz, Laura Molina, Md Sahid Hassan, Md Shahjahan Mahmud, Joshua Z.R. Dantzler, Alexis Lopez, Dominic H. Austen, Evgeny Z.R. Shafirovich, Shadman T Nabil, Francisco Medina, Nicholas Ku, Lionel Vargas Gonzalez, Yirong Lin |
| On-Site Speaker (Planned) |
Saqlain Zaman |
| Abstract Scope |
Ultra-high-temperature ceramics (UHTCs) offer exceptional melting temperatures and oxidation resistance but are hindered by brittleness and challenges in shaping complex geometries. This study investigates the 3D printing of zirconium diboride- silicon carbide (ZrB₂-SiC) composites, reinforced with either short or aligned fibers, to enhance mechanical strength and enable complex designs. Using suspensions of preceramic polymer with ZrB₂ and SiC short fibers, the research found that fiber alignment significantly improved material properties—doubling thermal conductivity, increasing electrical conductivity tenfold, and achieving fracture strengths above 57 MPa at 22.5% fiber volume. However, porosity over 10% in pyrolyzed parts restricted further gains. To improve the material properties even further, ongoing work explores paste extrusion-based 3D printing using continuous carbon fibers (CCF) within a ZrB₂-SiC matrix, yielding further property enhancements. These advancements highlight the promise of 3D printing for fabricating high-performance UHTCs tailored to demanding aerospace applications. |