Perspective—Localized Corrosion: Passive Film Breakdown vs Pit Growth Stability

By Gerald S. Frankel, Tianshu Li, J. Scully. 2017

179 citations recorded by the source corpus.

A debate about the critical step in localized corrosion has raged for decades. Some researchers focus on the composition and structure of the passive film associated with the initial breakdown of the film, whereas others consider that the susceptibility to pitting is controlled by the pit growth kinetics and the stabilization of pit growth. The basis for a unified theory of pitting is presented here in which pit stability considerations are controlling under aggressive conditions (harsh electrolytes and extreme environments and/or susceptible microstructures) and the passive film properties and protectiveness are the critical factors in less extreme environments and/or for less susceptible alloys.

Subfields: Civil and Structural Engineering, Materials Chemistry, Metals and Alloys

View Paper: https://www.semanticscholar.org/paper/1992c81c177f518edd15239638eda6698e533488

Citations in the corpus

• Passivation of a corrosion resistant high entropy alloy in non-oxidizing sulfate solutions (2019, unknown): “Additionally, resistance to passive film breakdown has been suggested as the dominant factor in localized corrosion under some circumstances [54].”