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Galvanic corrosion can be predicted by using the electromotive force (emf) or standard potential series for metal reduction listed in Table at the next slide
A mechanically deformed metal or alloy can experience galvanic corrosion due to
differences in atomic plane distortion and a high dislocation density
Improper heat treatment can cause nonuniform microstructure and therefore, galvanic-phase corrosion is enhanced in corrosive media
This term implies that specific parts of an exposed surface area corrodes in a suitable electrolyte. This form of corrosion is more difficult to control than general corrosion.
Filiform Corrosion is basically a special type of crevice corrosion, which occurs under a protective film. It is common on food and beverage cans being exposed to the atmosphere.
The initiation of pits occurs at localized sites on a metal surface defects, which may be due to coating failure, mechanical discontinuities or microstructural phase heterogeneities such as secondary phases.