Study of H2O2 Production and Consumption in γ-Irradiated Aqueous Systems in Contact with Zircalloy, Inconel, and AISI Alloys. An Electrochemical Approach.

Luca Gagliani; Christian Ekberg; Mats Jonsson

Study of H2O2 Production and Consumption in γ-Irradiated Aqueous Systems in Contact with Zircalloy, Inconel, and AISI Alloys. An Electrochemical Approach.
Paper i proceeding, 2025

_{This study investigates the steady-state concentration of radiolytic H2O2 produced by γ-radiolysis of water in contact with stainless steel, Inconel and Zircalloy materials. The findings reveal that the alloys lead to different hydrogen peroxide concentrations under γ-irradiation up to a total received dose of 2.2 MGy, with a maximum reduction of 40 % with respect to the control sample achieved by stainless steel and no tangible difference induced by Zircalloy. Without γ-irradiation, H2O2 reactivity is instead minimal and homogeneous toward all the alloys. No evidence of material oxidation was found on the surface of the irradiated samples. Further electrochemical investigations evidenced a shift of the Electrochemical Corrosion Potential (ECP) toward more positive values under γ-irradiation for both stainless steel and Zircalloy, with stainless steel showing a larger drift and higher current than Zircalloy. The results indicate that simple use of H2O2 solutions may not correctly mimic the effect of water radiolysis products and γ-irradiation on the alloys object of this study.}

Gamma Radiation

Radiolysis

Electrochemistry

Hydrogen Peroxide

Författare

Luca Gagliani

Kärnkemi och industriell materialåtervinning

Kungliga Tekniska Högskolan (KTH)

Forskning Andra publikationer

Christian Ekberg

Chalmers, Kemi och kemiteknik, Energi och material

Forskning Andra publikationer

Mats Jonsson

Kungliga Tekniska Högskolan (KTH)

The 23rd International Conference on Water Chemistry in Nuclear Reactor Systems

1279

The 23rd International Conference on Water Chemistry in Nuclear Reactor Systems
Busan, South Korea,

Ämneskategorier (SSIF 2025)

Materialkemi

Metallurgi och metalliska material

Annan kemi

Oorganisk kemi

Yt- och korrosionsteknik

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Infrastruktur

Chalmers materialanalyslaboratorium

Mer information

Skapat

2026-08-20

Study of H2O2 Production and Consumption in γ-Irradiated Aqueous Systems in Contact with Zircalloy, Inconel, and AISI Alloys. An Electrochemical Approach. Paper i proceeding, 2025