A study of the Carboxyethylimidazoline as an H₂S Corrosion Inhibitor of X-120 Pipeline Steel

摘要

The H2S corrosion inhibition of X-120 pipeline steel by using carboxyethylimidazoline has beenevaluated by using electrochemical techniques. Electrochemical techniques include polarizationcurves, linear polarization resistance, electrochemical impedance spectroscopy and electrochemicalnoise measurements. Testing solutions includes H2S-containing 3% NaCl with different inhibitor-1 concentrations (0, 16, 32, 80, 160 and 332 ol l ) at 50 . Different techniques have shown that by-1 adding 160 ol l of carboxyethylimidazoline the susceptibility to both uniform and localizedcorrosion decreases.