The Journal of Science and Engineering Applications (JSEA)

Abstract

This study examines the impact of multiple factors on the atmospheric corrosion of copper, including the impacts of individual gases (SO₂, NOx, and O₃) and the synergistic interactions of mixed gases on copper's atmospheric corrosion. The synergistic effect of SO₂ and NO₂ on copper corrosion appears exclusively at elevated humidity levels of 90%. The combined action of SO₂ and O₃ is more potent than that of SO₂ and NO₂, potentially elucidating the elevated corrosion rate of copper in O₃-abundant rural settings. The impact of ammonium sulfate particles is notably highlighted, as the corrosion rate and mechanism of copper undergo major alterations at the critical relative humidity (CRH) of ammonium sulfate. Various copper corrosion products and their creation methods are also presented. A concise review of prevalent experimental and characterization approaches for investigating copper atmospheric corrosion is presented, and research trends in copper atmospheric corrosion are outlined.