Electrochemical evaluation of aminotriazole corrosion inhibitor under flow conditions
Por:
Garnica-Rodriguez A., Genesca J., Mendoza-Flores J., Duran-Romero R.
Publicada:
1 oct 2009
Resumen:
The primary purpose of this study was to investigate the effect that turbulent pipe flow has on the electrochemical behaviour of a 3-amino-1,2,4-triazole (aminotriazole or 3-AT)-based corrosion inhibitor. The experiments were carried out in a 4-L laboratory pipe loop. A metallic ring made of API X52 pipeline steel was located in a linear segment of the pipe loop and acted as a test electrode. The test environment used in all experiments was a 3% NaCl solution saturated with CO(2) at 20 A degrees C. The range of Reynolds number studied was from 6518 to 32118, assuring turbulent flow conditions in the pipe loop. Electrochemical impedance spectroscopy (EIS) was used to determine the electrochemical behavior of the steel in the environment at different flow rates and inhibitor concentrations. It was found that the electrochemical impedance of the system is dependent on both exposure time and flow conditions (Reynolds number). It was also detected that EIS data can give information on the p
Filiaciones:
Garnica-Rodriguez A.:
Univ Nacl Autonoma Mexico, Dept Ingn Met, Fac Quim, Mexico City 04510, DF, Mexico
Genesca J.:
Univ Nacl Autonoma Mexico, Dept Ingn Met, Fac Quim, Mexico City 04510, DF, Mexico
Mendoza-Flores J.:
Direccion de Exploracion y Produccion, Corrosion, Instituto Mexicano Del Petroleo (IMP), Eje Central Lazaro Cardenas # 1520, Mexico, DF, Mexico
Duran-Romero R.:
Direccion de Exploracion y Produccion, Corrosion, Instituto Mexicano Del Petroleo (IMP), Eje Central Lazaro Cardenas # 1520, Mexico, DF, Mexico
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