苯并咪唑衍生物在1 mol/L HCl溶液中对45#碳钢缓蚀行为的研究
摘要
Two new benzimidazole derivatives, BSC6T and BSC8T, were synthesized using 2-aminobenzimidazole and triazine anionic surfactants. Their inhibition effect on steel 45(GB) in 1 mol/L HCl solution were studied by means of mass loss method, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). Results showed that the inhibition efficiency increased significantly with the increasing inhibitor concentration; BSC6T and BSC8T acted as a mixed type inhibitors with cathodic inhibition as the dominative action; BSC6T and BSC8T had better inhibition effect rather than 2aminobenzimidazole; however, among the three inhibitors, BSC8T exhibited the best inhibition performance with inhibition efficiency up to 98.6% for a concentration of 0.9 g/L.