Electrical properties of thermal oxide scales on pure iron in liquid lead-bismuth eutectic

Jie Qiu; Junsoo Han; Ryan Schoell; Miroslav Popovic; Elmira Ghanbari; Djamel Kaoumi; John R Scully; Digby D Macdonald; Peter Hosemann

arXiv · 2010.05372

Electrical properties of thermal oxide scales on pure iron in liquid lead-bismuth eutectic

Jie Qiu·Junsoo Han·Ryan Schoell·Miroslav Popovic·Elmira Ghanbari·Djamel Kaoumi·John R Scully·Digby D Macdonald·Peter Hosemann

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Abstract

The impedance behavior of pre-oxidized iron in liquid lead-bismuth eutectic (LBE) at 200 oC is studied using electrochemical impedance spectroscopy. The structures and resistance of oxide grown on iron oxidized in air at different temperatures and durations are compared. The results show that the resistance of the oxide film increases with increasing oxidizing temperature, due to the formation of a thicker scale and fewer defects. At the same temperature (600 oC), increasing the oxidation time can also reduce the defect concentration in the oxide film and improve the impedance of the oxide scale in LBE.

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Jie Qiu, Junsoo Han, Ryan Schoell, Miroslav Popovic, Elmira Ghanbari, Djamel Kaoumi, John R Scully, Digby D Macdonald, Peter Hosemann. 2020-10-11. Electrical properties of thermal oxide scales on pure iron in liquid lead-bismuth eutectic. https://arxiv.org/abs/2010.05372

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