Formation of Nano-Scale FeCO₃ Protective Corrosion Product in Carbon Dioxide-Saturated 3% Sodium Chloride Solution

Abstract:

Corrosion of carbon steel in CO₂ saturated NaCl solution contains the formation of FeCO₃, as a corrosion product. The protective property of the formed FeCO₃ scale layer to corrosion in brine solutions containing CO₂ was established as the possible cause of the corrosion rate decrease above 60 °C. In this study, formation of nanoscale FeCO₃ film as a corrosion product of X52 carbon steel in CO₂-Saturated 3% NaCl solution was investigated. Result showed that corrosion rate decreased after precipitation and formation of protective FeCO₃ film in high temperature and high bulk solution pH.

• Periodical: Key Engineering Materials (Volume 740)
• Pages: 3-8
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.740.3
• Online since: June 2017
• Authors: Saeid Kakooei*, Mokhtar Che Ismail, Bothi Raja, Hamed Mohebbi, Sattar Emamian, Majid Moayedfar
• Keywords: Carbon Steel, CO₂ Corrosion, FeCO₃, Nano-Scale

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