About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Materials Corrosion Behavior in Advanced Nuclear Reactor Environments III
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| Presentation Title |
Liquid metal penetration or rapid oxide growth -- Investigating heavy liquid metal inclusions in porous Fe-oxides |
| Author(s) |
Franziska Schmidt, Kayla Yano, Saikumaran Ayyappan, Matthew Chancey, Hyosim Kim, Djamel Kaoumi, Peter Hosemann, Blas Uberuaga, Yongqiang Wang |
| On-Site Speaker (Planned) |
Franziska Schmidt |
| Abstract Scope |
Oxide-formation on pure Fe exposed to O-rich PbBi eutectic (LBE) proceeds in a manner that appears to be fundamentally different from other corrosive oxide-forming environments, like water. As usual, Fe-oxide grows both inwards into the solid and outwards into the liquid. Both oxides are presumed to be magnetite, but the outer layer is very porous and contains LBE-inclusions. Surprisingly, these inclusions seem to be the consequence of rapid growth of the outer oxide, which makes them true inclusions rather than a sign of LBE-penetration into a previously pristine oxide via nano-channels, as is often assumed. Their presence may be a main contributor to oxide crack formation and delamination. This talk focuses on evidence for the inclusion mechanism, and the side-question of why these inclusions are enriched in Pb compared to the LBE bulk. Additionally, we will discuss the potential effects of proton irradiation, as observed in several simultaneous irradiation-corrosion experiments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Iron and Steel, |