First-principles study on dissolution corrosion behavior of alumina coating in liquid LiPb

Abstract

Liquid Lithium-Lead (LiPb) alloys can act as both neutron multiplier and tritium breeder in liquid blanket of fusion reactors, however, their corrosion on structure steel is still a challenge. Add a coating on the surface of structural component is an effective way to alleviate the liquid metal corrosion. In this work, by using the first principles molecular dynamic simulations, the dissolution, diffusion of alumina coating in liquid LiPb, the penetration of Li/Pb in alumina coating and the interface structure between alumina coating and liquid LiPb were investigated to evaluate the performance of the alumina coating in liquid LiPb. These data can provide indispensable information for understanding the performance of corrosion resistant coating in liquid LiPb.