We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of initial CaCO<sub>3</sub> saturation levels on the CO<sub>2</sub> corrosion of 1Cr carbon steel.
- Authors
Rizzo, Riccardo; Ambat, Rajan
- Abstract
This paper presents the investigation on the effect of calcium on the corrosion behavior of 1Cr carbon steel under various levels of initial CaCO3 saturation (SCaCO3) of the bulk solutions. All the experiments were performed at 80°C in 1 wt% aqueous NaCl solution saturated with CO2. Four initial SCaCO3 levels were investigated, namely 0, 0.6, 2, and 10. The corrosion process was followed using linear polarization resistance, potentiodynamic sweeps, and electrochemical impedance spectroscopy. The surface morphology of the corrosion products was analyzed with scanning electron microscopy and structural information using X‐ray powder diffraction. Precipitation of a substitutional solid solution of FexCayCO3 (x + y = 1) was found on the steel surface. The growth of this layer was delayed by Ca2+ ions in the solution, but its protectiveness was not affected and was comparable with the pure FeCO3 corrosion product. No signs of localized corrosion were detected on the material.
- Subjects
ELECTROLYTIC corrosion; CARBON steel corrosion; CARBON steel; X-ray powder diffraction; LINEAR polarization; SCANNING electron microscopy
- Publication
Materials & Corrosion / Werkstoffe und Korrosion, 2021, Vol 72, Issue 6, p1076
- ISSN
0947-5117
- Publication type
Article
- DOI
10.1002/maco.202011822