E. Abelev, D. Starosvetsky, Y. Ein‐Eli
2007
Citations
0
Influential Citations
30
Citations
Journal
Electrochimica Acta
Abstract
This work presents the novel nature of 2,4-hexadienoic acid potassium salt (potassium sorbate (KCH3CH CHCH CHCO2)) as an effective copper aqueous corrosion inhibitor. The influence of pH and potassium sorbate concentration on copper corrosion in aerated sulfate and chloride solutions is reported. Degree of copper protection was found to increase with an increase in potassium sorbate concentration; an optimum concentration of this inhibitor in sulfate solutions was found to be 10 g/L. Copper is highly resistant to corrosion attacks by chloride ions in the presence of potassium sorbate. X-ray photoelectron spectroscopy (XPS) studies suggest that copper protection is achieved via the formation of a mixed layer of cuprous oxide, cupric hydroxide and copper(II)-sorbate at the metal surface.