Mechanistic Model for the Prediction of Top-of-the-Line Corrosion Risk

A model is presented for the prediction of the corrosion rate by carbon dioxide (CO₂) under dewing conditions. A mechanistic approach is developed that takes into consideration the hydrodynamics, thermodynamics, heat and mass transfer, chemistry, and electrochemistry during the phenomenon of top-of-the line corrosion. This model is validated by experimental data. It offers a better insight into the role played by primary parameters such as temperature, total pressure, partial pressure of CO₂, gas velocity, and condensation rate.