Corrosion Inhibitor Transport
Application ID: 109081
The model simulates atmospheric corrosion of a galvanic couple, comprising of an Al-Co-Ce metallic coating and an aluminum alloy, which is in contact with electrolyte film of 100 micrometer thickness.
The corrosion inhibitors are released from the metallic coating and are transported to the aluminum scratch surface by diffusion and migration. The model presented here accounts for charge transport as well mass transport involving 11 species and 5 homogeneous reactions.
The model computes the transient and spatial distribution of species in the film, estimating the time required for accumulation of critical inhibitor concentration over the aluminum scratch surface. The effect of scratch size and initial pH of the electrolyte is also demonstrated in the model.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
- COMSOL Multiphysics® et
- soit le Module Battery Design, Module Corrosion, Module Electrochemistry, Module Electrodeposition, ou Module Fuel Cell & Electrolyzer
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Grille des Spécifications and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.