Electrochemical characteristics of Al-brass are investigated in both 3.5% NaCl and sea water. At active potential, the alloy is dissolved directly or through an adsorbed metastable CuCl layer. At higher applied anodic potential, the active-passive transition leads to the formation of a thicker and more stable CuCl salt layer. With further increase in the anodic potential, the formation of CuO and/or Cu(OH) 2 will take place. The inhibition of the corrosion process is studied by adding SDBS, DPh(EO) 9 , and LAPACl as anionic, nonionic, and cationic surfactants. It is found that the inhibition efficiency increases in the following order SDBS>LAPACl>DPh(EO) 9 , and increases with increasing their concentrations.