About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanics at the Extremes: Bridging Length-Scales From Nanoscale to Bulk
|
| Presentation Title |
The Oxidation Behavior of the (Ta1-xHfx)-Al-C MAX Phases |
| Author(s) |
Lavina Backman, Yael Passy, Homa Keshmiri, Jenna Jaklich, Sara Mills, Eric Patterson |
| On-Site Speaker (Planned) |
Lavina Backman |
| Abstract Scope |
MAX phases and MXenes have been revisited as a structural material for extreme environments due to their unique mechanical properties. While they have historically been viewed as possessing poor oxidation resistance at longer times (~hours), they have yet to be evaluated for short-term applications. Hf and Zr-based materials are known to have better oxidation resistance compared to Ti-based materials, however, very few attempts to form a Zr- or Hf- based MAX phase have been successful due to the high stability of competing phases. Researchers, however, have recently incorporated Hf into a Ta-Al based MAX phase. Ta-Hf based compounds have been known to form the complex oxide Hf6Ta2O17, which has been hypothesized as enabling good oxidation resistance in Hf-Ta containing UHTCs. (Ta1-xHfx)-Al-C MAX phases were synthesized following methods published in the literature, and tested at T≥1500°C in air for fifteen minutes. Their resulting oxidation behavior and resistance will be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, High-Temperature Materials, Other |