Corrosion of Copper and a copper alloy in different aqueous media

Abstract

In this research, the corrosion behavior of the copper and copper alloy in different conditions and environment were studied. The corrosion behaviour and mechanism for copper and copper alloy in( HNO3, H2SO4,HCl, NaCl)solutions were studied by chemical mass loss, kinetic of corrosion, half life time, inhibitor efficiency and corrosion rate of inhibitor efficiency methods at25oC.were also investigated. The chemical results revealed that copper and copper alloy corrodes in( HNO3, H2SO4,HCl, NaCl)solutions the corrosion rate increased with the increasing in acid concentration.Weight loss technique were used to study the corrosion inhibition efficiency in1.0 M( HNO3, H2SO4,HCl, NaCl) solutions by using the urea and acetanilide. The results showed that urea is good corrosion inhibitors, Corrosion inhibition efficiency increased with increasing weight of inhibitor. Inhibition efficiency was found maximum up to 68.5% for copper. The rate of metal dissolution increases with acid concentration. The corrosion of copper was found to be greater than copper alloy .