The competition between corrosion and oxidation on a steel surface immersed in lead alloys with controlled oxygen leads to different oxide-layer characteristics as compared with those formed in gases. The presence of a liquid metal [liquid lead or lead-bismuth eutectic (LBE)] can either enhance or reduce the oxidation rate, resulting in different oxide growth rates and microstructures. Based on analysis of experimental results in static LBE/lead and gases under the same experimental conditions, we predict the oxide-layer structure and thickness as functions of immersion time and analyze the factors that play important roles in the oxidation process in LBE/lead. It is shown that there is a significant difference between the oxide formed in liquid lead alloys and in gases, including the oxide-layer structure. To generate a stable protective oxide layer on steel surfaces in LBE, the long-term corrosion effect, the supply of oxygen, and the penetration of the liquid metal into the structural materials or oxide layers must be taken into account.

This content is only available via PDF.
You do not currently have access to this content.