Copper corrosion behavior in the disposal of highly radioactive nuclear waste
KONG Decheng1, MAO Feixiong2, DONG Chaofang1, XIAO Kui1, LI Xiaogang1
1. Corrosion and Protection Center, University of Science and Technology of Beijing, Beijing 100083, China;
2. School of Metallurgy and Materials, Northeastern University, Shenyang 110819, China
Abstract:With the rapid development of nuclear industry, the disposal of highly radioactive waste becomes a major safety and environmental issue, and the deep geological disposal is a generally accepted solution. For the reduction and the anaerobic disposal repository of granite, the suitable canister material is the high-purity copper. This paper reviews the domestic and foreign researches of the electrochemical behavior of the copper corrosion in the high-level waste environment, including the geological environment of the repository, the mechanism and the process of the copper corrosion and the life prediction of the copper canister. This paper provides a theoretical basis for better assessment of the corrosion resistance of the copper and precise prediction of the disposal canister life in the repository environment.
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