Theoretical and experimental investigations on corrosion control of 65Cu–35Zn brass in nitric acid by two thiophenol derivatives

摘要: Abstract Inhibitive performance of two thiophenol derivatives namely 4-aminothiophenol (4-ATP) and 4-amino phenol disulfide (4-APD) on corrosion behavior 65Cu–35Zn brass in 0.5 M HNO 3 was investigated. Potentiodynamic polarization electrochemical impedance spectroscopy (EIS) also quantum chemical study were used. 4-APD showed higher efficiency at low temperatures while for the 4-ATP is more efficient. The inhibitors obey Langmuir isotherm its adsorption both physical type. Quantum reveals that benzene ring, S N atoms can be suitable sites onto surface. Finally, an acceptable correlation between theoretical experimental inhibitor acquired.