Augmentation of Polymer-FeCO Microlayers on Carbon Steel for Enhanced Corrosion Protection in Hydrodynamic CO Corrosion Environments.

Carbon dioxide (CO) internal corrosion of carbon steel pipelines is a significant challenge and is typically managed by adding corrosion inhibitors. In certain operational conditions, a natural protective layer of iron carbonate (FeCO) can form on the internal walls of the pipeline, offering inhibition efficiency comparable to that of standard surfactant inhibitors. However, incomplete coverage of the FeCO layer on carbon steel can sometimes trigger localized corrosion.