Electrochemical study of 2-mercaptoimidazole as corrosion inhibitors in API 5L X70 steel immersed in 3% NaCl

J. J. Rojas Contreras, A. Espinoza-Vázquez,F. J. Rodríguez Gómez,R. Orozco-Cruz, E. F. Hernández-Molina, D. Angeles-Beltrán

MRS ADVANCES（2022）

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摘要

The inhibitor 2-mercaptoimidazole (2-MI) at different concentration in API 5L X70 immersed in sodium chloride was researched by means of electrochemical impedance spectroscopy under different hydrodynamic conditions (rotation rate). The best conditions are present at 0 rpm and 5 ppm with inhibition efficiency of 90.7%. Finally, the 2-MI inhibitor follow a physisorption mechanism according to the Langmuir isotherm. Graphical abstract

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