How does gamma radiation affect the corrosion behavior of copper in the presence of Ag/AgCl quasi-reference electrodes (QREs)?

Label:chem

Topic
Copper is a material of interest for nuclear waste storage applications, and understanding its corrosion behavior under gamma radiation is crucial. The study investigates the corrosion of copper in 0.1M NaCl solution under gamma radiation using Ag/AgCl QREs.
Answer
Gamma radiation affects the corrosion behavior of copper by increasing its open circuit potential (OCP) due to the oxidizing power of radiolysis species. The study shows that the OCP of copper under radiation is statistically higher than that of non-irradiated samples. Potentiodynamic polarization measurements indicate no significant difference in corrosion potential (Ecorr) and corrosion current density (jcorr) between irradiated and non-irradiated copper samples. However, an observable difference in the anodic branch suggests the possible formation of a passive film under radiation. The Ag/AgCl QREs are reliable for these measurements, confirming their suitability for in-situ electrochemical corrosion studies under gamma radiation.
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