Corrosion in heavy liquid metals for energy systems

Heavy liquid metals (HLMs) such as molten Pb and lead bismuth eutectic (LBE) are being proposed as heat transport fluids in advanced nuclear and concentrated solar power systems because of their low vapor pressure, excellent thermophysical (high boiling point and thermal conductivity) and neutronic properties, and thermal energy storage potential. However, HLM compatibility with structural materials including corrosion and liquid metal embrittlement is among the main challenges preventing widespread applications in energy systems. To control the structural material interaction with the HLM, one has to pay close attention to the HLM chemistry. The HLM chemistry in combination with the material-to-HLM interaction is key to enabling this technology. This special topic provides a platform to highlight recent advances addressing challenges involving heavy liquid metal coolant-material interactions.