New surfactants N-alkyl-N,N-dimethyl-N-(3-thienylmethylene)ammonium bromides: Preparation and anticorrosion evaluation

摘要

A new series of N-alkyl-N,N-dimethyl-N-(3-thienylmethylene)ammonium bromides (designated as NTA-n, n=8, 10, 12, 14, and 16) were synthesized. The electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization showed that NTA-n could protect availably X70 steel from attack of HCl with an inhibition efficiency of about 95%. And the inhibition ability follows the following sequence: NTA-8