Impact of corrosion products on performance of imidazoline corrosion inhibitor on X65 carbon steel in CO2 environments

The impact of pre-corrosion on the performance an imidazoline-based corrosion inhibitor was evaluated with respect to inhibition uniform and localised in CO2-environments. Corrosion protection found be a function two factors, adsorption/film formation presence products. This effect most significant continuous FeCO3-rich layer high coverage steel surface, resulting only providing ?25 % overall afforded by FeCO3. products had influence adsorption pit depth.