Publication | Open Access
Effect of KI on Improving Copper Corrosion Inhibition Efficiency of Benzotriazole in Sulfuric Acid Electrolytes
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1993
Year
Materials ScienceInorganic ChemistryChemical EngineeringSynergistic EffectEngineeringCopper DissolutionCorrosion TechnologyCorrosionEnvironmental ElectrochemistryCorrosion ProtectionSulfuric Acid ElectrolytesChemistryNew Complex FilmCorrosion ResistanceElectrochemistryCorrosion Inhibition
A synergistic effect exists when BTAH and iodide ions are used together to prevent the corrosion of copper in sulfuric acid. The nature of this effect has been studied systematically by using electrochemical techniques and x‐ray photoelectron spectroscopy. The synergistic effect is due largely to the formation of a film of Cu(IBTA) complex and is probably polymeric in nature. This new complex film greatly depresses copper dissolution.