Electrochemical corrosion behavior of carbon steel under dynamic high pressure H2S/CO2 environment

Through the design of experimental setup, the electrochemical corrosion behavior of carbon steel under dynamic high pressure of H2S/CO2 environment was studied by in situ electrochemical measurements and weight loss measurements. Computational fluid dynamics (CFD) was also performed to simulate the flow velocity and shear stress on specimen surface. The results show that both the anodic and cathodic processes are activation controlled. The impedance spectra are characterized by double capacitive semicircles. The in situ electrochemical measurements are in accordance with the CFD simulation of flow velocity and shear stress on the specimen surface.