Electrochemical corrosion behaviour of copper in binary mixtures of dimethylformamide and water

Abstract

The results of electrochemical corrosion studies of copper in dimethylformamide and water mixtures show that the corrosion of copper is cathodically controlled with the metal being anodically active in the region of a higher mole percent of water. It is interesting to note that polarization curves determined in aerated mixtures do not show passivity, while in deaerated mixtures they show passivity in 30, 50, 70, 90, and 100 mol% DMF. Stirring and the dissolved oxygen influence both cathodic and anodic processes.