| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Chemistry and Physics of Interfaces
|
| Presentation Title |
Mechanical Properties of Monolithic Transition Metal Borides After ExtendedHhigh Temperature Oxidation |
| Author(s) |
Michael Ammendola, Robert Slapikas, Douglas Wolfe, Anindya Ghoshal |
| On-Site Speaker (Planned) |
Michael Ammendola |
| Abstract Scope |
As ultra-high temperature ceramics (UHTCs), Zr- and Hf-based boride compositions have been thoroughly investigated for aerospace applications due to their desirable thermomechanical properties at high temperatures. State-of-the-art research has focused primarily on the development of these systems in composite architectures; however, a more targeted scrutiny of the monolithic borides can enhance our understanding of each constituent toward material development for extreme environments. In this work, the oxidation behavior is explored for sintered ceramics of ZrB2, HfB2, and (Zr,Hf)B2 by subjecting the materials to increasing durations of oxyacetylene flame exposure at 2400 °C. Microstructural and phase evolution are characterized by electron microscopy and X-ray diffraction, respectively, while mechanical properties are evaluated by indentation testing and analysis. Insights will be gleamed on the ablation performance, thermal shock response, and retained mechanical properties as a function of the flame exposure time, meriting new insights on the thermomechanical properties of monolithic boride materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Ceramics, Characterization |