Diffusion properties of liquid lithium-lead alloys from atomistic simulation

摘要

Liquid Li and Li-Pb alloy are the most potential candidate materials for the blanket of thermonuclear fusion reactor. In the present paper, the diffusion behaviors of liquid Li, Pb and Li-Pb alloys are studied by molecular dynamics simulations with a modified analytical embedded atom method potential. The obtained diffusion coefficients of liquid Li and Pb are in good agreement with the experimental results. For liquid Li-Pb alloys, the mutual diffusion coefficient increases monotonously with increasing Li content, while the diffusion coefficients of components do not increase until the concentration of Li is more than 50%.