NOMATEN ONLINE-SEMINAR September 24: Experimental approach to the effects of irradiation on the corrosion rate of zirconium alloys
NOMATEN Online Seminar
Location: gotomeeting room - https://meet.goto.com/NCBJmeetings/nomaten-seminar
Seminar date: September 24th, 2024, 1 PM
Experimental approach to the effects of irradiation on the corrosion rate of zirconium alloys
Speaker name: Dr. Marc Tupin
Speaker affiliation: CEA Saclay, France
Abstract:
Understanding fuel rod cladding corrosion processes remains a challenge in terms of the impact of alloying elements on the oxidation rate. The corrosion mechanisms of zirconium alloys - Zircaloy-4 and M5 - are not yet fully understood, due to the complexity of these materials, the environment and ionizing radiation conditions. The aim of our research over the last decade has been to decouple and study separately the influence of radiation damage in the metal from the effects induced in the oxide layer and the impact of radiolysis of water. The most remarkable finding is that the effects of radiation on the corrosion rate of Zircaloy-4 are negative overall, whereas the M5 alloy shows better behavior after ion irradiation. The results and prospects will be discussed in terms of mechanism and modeling.
Bio:
Dr. Marc Tupin is the Research Director at the Department of Materials and Physical Chemistry Research (DRMP) at CEA Saclay, part of the Université Paris-Saclay. Dr. Tupin holds a PhD in Physical Chemistry from Grenoble University, with extensive experience in the field of materials science. Dr. Tupin’s research is centered on understanding the complex mechanisms of corrosion, especially of zirconium alloy, the effects of irradiation on materials, and electrochemistry measurements applied to corrosion. Dr. Tupin has a particular focus on hydrogen embrittlement in zirconium alloys, which are critical materials in the nuclear industry. The main project is “GEN II - GEN III advanced cladding” which aims to develop and optimize materials for improved performance and safety in nuclear reactors
