Electrochemical investigation of Cyproconazole as corrosion inhibitor for copper in synthetic seawater

摘要

This paper presents the investigation of cyproconazole, namely2-(4-chlorophenyl)-3-cyclopropyl-1-(1H-1,2,4-triazol-1-yl)butan-2-ol, ascorrosion inhibitor for copper in synthetic seawater(3.5% NaCl solution). The inhibition action of cyproconazole on the corrosion of copper was investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization. The selective desorption of Cyproconazole from copper surface was also studied by the differential polarization curves. EIS indicates that the inhibition formed an adsorption film on copper surface. The inhibition efficiency increases with increasing concentration. Polarization curves show that Cyproconazole acts as mixed-up inhibitor.