Effect of pH and Cl- on Electrochemical Corrosion of Cu-Cr-Zr Alloy

Eelectrochemical methods were applied to study the corrosion resistance of Cu-Cr-Zr alloy under the condition of 0.6 mol/L NaCl solution and pure water solutions with different pH. The structure and morphology of samples after 72 hours immersion tests were characterized by SEM and EDS. Corrosion resistance of samples in different solutions were compared. The results showed that the corrosion resistance of Cu-Cr-Zr alloy was decreased by chloride ions. The electrochemical corrosion of Cu-Cr-Zr alloy in the chlorine solution decreased in the alkaline environment,uniform corrosion occurred in strong acid solution,and localized corrosion occurred in strong alkaline solution.