[1A08-12] Radiolysis, Corrosion 3

[1A12] Corrosion evaluation and mitigation in the PCV systems under the influence of α/β/γ radiolysis

(5) Possibility of Corrosion Suppression of Carbon Steel using Inert Gas Ultra-Fine Bubble Water

*Hideki Katayama¹, Yusuke Muto², Yusuke Tsutsumi¹, Hikari Watanabe², Isao Shitanda², Masayuki Itagaki² (1. NIMS, 2. TUS)

Keywords:carbon steel, corrosion, inert gas, ultra-fine bubbles, dissolved oxygen

The possibility of suppressing the corrosion of carbon steel in argon gas ultra-fine bubble water was investigated by an electrochemical method. As a result, the corrosion rate of carbon steel was suppressed for at least 24 hours in the environment exposed to the atmosphere. In addition, it was found that the suppression effect lasts for a longer time by purging the gas phase with argon gas.