| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments III
|
| Presentation Title |
Thermomechanical Characterization of Advanced Reactor Materials in High Temperature Gas Environments |
| Author(s) |
William Searight, Leigh Winfrey |
| On-Site Speaker (Planned) |
William Searight |
| Abstract Scope |
Advanced reactors have much more demanding environments than light-water reactors in terms of high heat, radiation flux and corrosion. To enable these reactor systems, structural materials must be developed to endure these conditions without significant thermomechanical degradation. Material candidates of interest include Silicon Carbide matrix composite (SiC/SiC), TZM molybdenum-based alloy and Highly Oriented Pyrolytic Graphite (HOPG), all of which need additional experimental verification of their long-term survivability in high-temperature corrosive environments. To examine thermomechanical property evolution in advanced reactor gas environments, mixtures of hydrogen, helium, and argon will be backfilled in a 1400 °C tube furnace for 40 hours as an initial assessment of environmental survivability. Sample surfaces will be characterized using electron microscopy techniques, Thermogravimetric Analysis (TGA) and nanoindentation. Time of Flight Secondary Ion Mass Spectroscopy (TOF SIMS) will be used to map hydrogen content post-exposure. |