Centre d'apprentissage

Boundary Conditions: Polarization Curves

In Part 2 of this course on corrosion modeling using COMSOL Multiphysics and the add-on Corrosion Module, we cover important concepts in electrochemical boundary conditions and polarization curves, as well as the use of the built-in corrosion materials available in the material library in COMSOL Multiphysics. Boundary conditions in electrochemistry usually refer to the reactions at metal surfaces, which are defined through kinetic expressions. You can define the electrode kinetics through pre-defined equations, such as Butler-Volmer and Tafel, user-defined equations, or polarization curves from the material library. The Corrosion Module expands the material library in the software by including many additional types of materials and their respective properties for modeling corrosion. This includes equilibrium potentials and polarization data (local current density vs. electrode potential) for various metals and alloys in electrolytes. The tutorial demonstrates applying these materials in a cathodic protection model, emphasizing the importance of reference electrode settings and showing how to streamline setup using predefined material data for accurate corrosion simulations.

Follow along by downloading the attached model file.