Corrosion characterization of cu-based alloy in different environment

Corrosion behavior of copper as alloy base material had been investigated electrochemically in three different solutions. Solution of 1 M HNO₃, 3,5% NaCl and 1M NaOH had been used as the corrosive medias for Cu alloys and Electrochemical Impedance Spectroscopy (EIS) method was used to study its corrosive characteristics. The result of the study revealed that bronze had corrosion resistance average which was higher compared to brass and copper in corrosive media of 1M HNO₃, 3,5% NaCl and 1M NaOH. The most aggressive corrosive media attacked Cu and its alloys starting from 1M NaOH, HNO₃ and 3,5% NaCl.