Fig. 5: Model of the partially depassivated Cu surface.

a Local depassivation model. The different parts on the surface are also depicted: Cu₂O surface, walls, and edges, as well as the metal surface and the corrosion inhibitor. b Incomplete depassivation situation. c Locally depassivated surface model, where the different parts on the surface will influence the inhibitors' adsorption. Adapted from ref. ¹³⁸ with authorization.