Influence of Oxygen on Copper Corrosion Behavior in Simulated Groundwater

ABSTRACT The corrosion behavior of copper in simulated groundwater with different oxygen conditions was investigated using different electrochemical techniques. Additionally, scanning electron microscopy (SEM) equipped with energy‐dispersive X‐ray spectroscopy (EDS) and Raman spectroscopy were used to characterize the corroded surfaces and identify the corrosion products. Under anaerobic conditions, copper exhibited predominantly uniform corrosion at a slow rate, with cuprous oxide (Cu₂O) identified as the primary corrosion product. In an aerobic environment, additional corrosion products including cupric oxide (CuO) and basic copper carbonate (Cu₂(OH)₂CO₃) were observed, and the presence of oxygen significantly accelerated the corrosion process, resulting in an initially higher corrosion rate.