Effect of Chloride Concentration on Corrosion Behavior of Carbon Steel under Gamma-ray Irradiation.

The corrosion behavior of carbon steel in chloride aqueous solutions at a low dose rate was investigated by corrosion testing using chloride aqueous solutions with different chloride concentrations at a dose rate of 500 Gy/h. The corrosion rate of carbon steel increased with the irradiation, and the corrosion rate had a maximum value at a certain concentration. The oxidants produced by radiolysis of chloride aqueous solution enhanced the corrosion of carbon steel. The main oxidants were oxygen and hydrogen peroxide, and the diffusion process of oxidants controlled the corrosion of carbon steel under the gamma-ray irradiation. There was a positive correlation between the dependence of the corrosion rate and chloride concentration and the dependence of the oxidant and chloride concentrations. [ABSTRACT FROM AUTHOR]