Effect of helium ion irradiation on short-time corrosion behavior of two novel high-entropy alloys in simulated PWR primary water

Abstract The effect of helium ion irradiation on the short-time corrosion behavior of two novel high-entropy alloys (HEAs) was investigated in simulated PWR primary water. The results revealed that a double-layer oxide film consisting of Ti, Nb and V oxides was formed on both HEAs, including outer oxide particles and a protective inner oxide layer with a maximum depth of ∼500 nm. Irradiation up to 10.5 dpa may hardly promote corrosion kinetics since severe lattice distortion and sluggish diffusion in HEAs. The corrosion processes with and without irradiation were discussed in detail.