Film Characteristics of Carbon Steel in Simulant Solution with the Effect of Acetic Acid and CO2

Abstract

The work investigated the influence of acetic acid (HAc) on the corrosion behavior of carbon steel exposed to the simulant solution. The analysis methods such as scanning electron microscopy, x-ray diffraction, energy dispersive spectroscopy, and x-ray photoelectron spectroscopy were employed to systematically characterize the morphology and component of the corrosion film. The corrosion rate was calculated by weight loss and electrochemical methods. In addition, the corrosion behavior was further studied by using potentiodynamic polarization and electrochemical impedance spectroscopy. It was shown that the corrosion potential and current density increased with increasing the amounts of HAc. The HAc concentration has an important effect on the corrosion film and the corrosion mechanism.

Investigation of Inhibition Properties of Sophorolipids for X65 Steel Corrosion in Simulated Oilfield Produced Water Saturated with Carbon Dioxide

“…The intermediate product may be FeO­(OH). This is consistent with the involvement of adsorbed intermediates in the anodic dissolution of iron in acidic solution referred to by Bockris et al and in solutions saturated with CO 2 . , …”

“…This is consistent with the involvement of adsorbed intermediates in the anodic dissolution of iron in acidic solution referred to by Bockris et al 18 and in solutions saturated with CO 2 . 19,20 Almost all the Nyquist plots contain a depressed single semicircle in the complex impedance plane, with the center under the real axis, which is a typical behavior for solid metal electrodes that show frequency dispersion of the impedance data. 21 Dispersion has been ascribed to roughness and other inhomogeneities of the solid surface.…”

Corrosion behavior of X65 carbon steel in simulated oilfield produced water

“…a. The inductive loop is usually related to adsorb the intermediate product of the corrosion reaction . The electrochemical equivalent circuit was shown in Fig.…”

Effects of sulphide ion on corrosion behaviour of X52 steel in simulated solution containing metabolic products species: a study pertaining to microbiologically influenced corrosion (MIC)

“…This is due to the change in the nature of cathode reaction in the presence of sulphide ions as shown in the following reactions [41][42][43] …”