The behaviour of a modified F82H martensitic steel (both uncoated and aluminised) and tungsten was evaluated by immersion tests in stagnant, oxygen-saturated liquid lead at 793 K under an argon atmosphere, for exposure times up to 3700 h. The F82H steel is a candidate structural material for Accelerator Driven Systems (ADS), while tungsten is potentially suitable for a beam window working immersed in liquid lead. Layers of Me3O4consisting of an inner sublayer with Me = Fe and Cr and an outer chromium-free sublayer of Fe3O4, formed on the surface of the uncoated steel while the aluminised steel showed no significant alteration. On tungsten, a compact and adherent layer of WO3formed and reacted with liquid lead leading to the formation of friable Pb-W-O ternary compounds. A two-step mechanism is proposed for interactions of metals and alloys exposed to oxygen-saturated molten lead: the first step is the solid phase oxidation of the base metal; the second is the interaction between liquid lead and the oxide layer formed on the metal surface.
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
Benamati, G., Buttol, P., Imbeni, V., Martini, C., & Palombarini, G. (2000). Behaviour of materials for accelerator driven systems in stagnant molten lead. Journal of Nuclear Materials, 279(2-3), 308 - 316. https://doi.org/10.1016/S0022-3115(99)00283-4