Investigating Atmospheric Corrosion of Copper and the Role of Cathodic Cleaning in Nuclear Waste Containment Applications
Abstract
This thesis investigates the corrosion behaviour of copper, focusing on the impact of air-formed surface films and the effectiveness of cathodic cleaning procedures. Using macro and micro electrochemical techniques, the study assesses how surface finishing and film formation influence copper's corrosion resistance. Results indicate that rougher surfaces develop more protective films over 30 days, enhancing corrosion resistance. However, cathodic cleaning is not fully effective in reducing surface films, with its efficacy highly dependent on experimental conditions. The process also poses risks, such as hydrogen evolution, and is limited by the reformation of films during post-cleaning immersion. This research challenges existing assumptions about copper surface films and treatment, highlighting the need for refined methodologies to improve copper's long-term durability. These findings offer significant contributions to academic research and industrial practices in corrosion science, potentially guiding future advancements in corrosion prevention and material longevity.