| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Effect of graded microstructure on the modulus, hardness, and strength of hot-pressed ZrB<sub>2</sub>-B<sub>4</sub>C FGM |
| Author(s) |
Ajit Kumar Naik, Lava Kumar Pillari Pillari, Manish Patel, Lukas Bichler, Tapas Laha, Siddhartha Roy |
| On-Site Speaker (Planned) |
Ajit Kumar Naik |
| Abstract Scope |
Novel ZrB<sub>2</sub>-B<sub>4</sub>C functionally graded composite (FGM) tile with 100 mm diameter and 6 mm thickness with ZrB<sub>2</sub> content varying from 70 % in the top layer to 10 % in the bottom layer was fabricated using vacuum hot pressing. The density of the fabricated FGM is ~ 35 % lower than monolithic ZrB<sub>2</sub>. The FGM showed a smooth compositional transition without defects in the interlayer regions. The flexural strength of the FGM is approx. 400 MPa and the fracture mode displays a transition with composition along the thickness direction. The combination of low density, smooth interlayer transition, high flexural strength, as well as excellent hardness and wear resistance at the top layer renders the developed FGM potentially very attractive for thermal protection applications in hypersonic aircraft and re-entry vehicles. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Composites, Mechanical Properties |