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Film-breaking mechanism

Figure 1 47. Diagram showing the mechanisms leading to pit nucleation a) penetration mechanism, b) film-breaking mechanism. Figure 1 47. Diagram showing the mechanisms leading to pit nucleation a) penetration mechanism, b) film-breaking mechanism.
Three main mechanisms are discussed by most authors for the processes leading to breakdown of passivity the penetration mechanism, the film-breaking mechanism, and the adsorption mechanism [4]. Figure 7.2a through c presents diagrams for their explanation. [Pg.353]

The change of the pit shape with its size and thus its age gives support to the film-breaking mechanism. A rapid change of the electrode potential causes small cracks within the... [Pg.374]

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