2011•Corrosion & ProtectionRequires access

Inhibition Performance of an Oil Field Inhibitor in H_2S/CO_2 Saturated 3% NaCl Solution

Cui Xin-an

Abstract

The inhibition performance of an imidazoline derivative inhibitor for carbon steel in CO2/H2S saturated 5% NaCl solution at 60 ℃ was investigated by potentiodynamic polarization and weight loss measurements,and the surface analysis of carbon steel was performed by SEM and EDS.Results showed that the inhibitor CI-03,acting as an anodic-type inhibitor,could inhibit the corrosion of carbon steel in simulation solution significantly.Its adsorption on the metal surface obeys Langmuir adsorption isotherm.The inhibitor could form a product film on the metal surface by adsorption,which brought on high protection performance for carbon steel.

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Key concepts: Adsorption, Corrosion inhibitor, Corrosion, Carbon steel, Metal, Polarization (electrochemistry), Materials science, Chemistry