| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Refractory Metals 2025
|
| Presentation Title |
Oxidation of refractory metals in molecular and dissociated oxygen |
| Author(s) |
Elizabeth J. Opila, Connor Stephens |
| On-Site Speaker (Planned) |
Elizabeth J. Opila |
| Abstract Scope |
Refractory metals have potential use in ultra-high temperature applications due to their extremely high melting temperatures. However, these metals are prone to rapid oxidation. One application of interest is for hypersonic leading edges in which shock waves generated from high Mach number velocities dissociate oxygen present in the environment. In this presentation, a bench top method for characterizing oxidation kinetics of refractory metals in dissociated oxygen is introduced, showing promise for cost-effective hypersonics materials testing and rapid through-put relative to arc jet facilities. A microplasma is generated in a resistive heating system allowing separate effect studies of temperature and gas dissociation, enabling mechanistic understanding. Oxidation of tantalum metal is used to demonstrate the greater reactivity of refractory metals in dissociated oxygen. Oxidation results obtained in molecular and dissociated oxygen at temperatures between 1300 and 1500C are presented. Testing of additional refractory metals in this facility are currently underway. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Environmental Effects, Other |