Acetic acid and CO2 corrosion was investigated on carbon steel specimens covered with iron carbonate (FeCO3) layers. The tests were carried out at 80 °C, 0.5 bar CO2, using rotating cylinder electrodes. Protective iron carbonate layers did form in solutions with high FeCO3 supersaturation, both in presence and absence acetic acid. The protective effect of the FeCO3 layer failed with decreasing supersaturation. The results were interpreted in terms of the scaling tendency concept.

Subject
Films, Corrosion rate, Metal surfaces, Protective films, Reservoirs, Acidity, Supersaturation, Constants, Film formation, Steel, Acetic acid, Corrosion protection, Scaling
Keywords:
acetic acid, carbon dioxide, corrosion, carbon steel, iron carbonate
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2007
Association for Materials Protection and Performance (AMPP)
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