Local Corrosion Chemistry—A Review

The localized chemistry in pits, crevices, and cracks has been studied since the middle of the 1920’s. Galvele introduced a quantitative framework for localized corrosion through his paper on acidification in pits. He developed a concept that required that the arithmetic product of pit depth and current density (x·i) must attain a critical value in order to sustain this local acidification. This framework, introduced in 1976, is still useful...