Corrosion of Stainless Steel in Aqueous Solution by Radioactive Strontium

Abstract

In order to understand the effect of beta-rays from strontium-90 (Sr-90), one of the radionuclides released in the Fukushima Daiichi Nuclear Power Plant accident, on corrosion of stainless steel, we have conducted a immersion test of Type316L stainless steel in which Sr-90 was dropped into artificial seawater. We have found that the drop of Sr-90 increased the potential of SUS316L steel, which was caused by an increase in the concentration of hydrogen peroxide in the solution due to beta-rays.

Keywords

Stainless Steel, Corrosion Potential, Artificial Seawater, Beta-rays, Radiolysis

Publications

• T.Aoyama, C.Kato, T.Sato, N.Sano, N.Yamashita, F.Ueno: Effect of Sr-90 Dissolved Solution on Corrosion Potential of Type 316L Stainless Steel, Zairyo-to-Kankyo, 71(4), pp 110-115 (2022). (in Japanese)