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Wherever there are chloride solutions, such as sea water, bleach or oxidising salts e.g. ferric chloride and cupric chloride, pitting and crevice corrosion can occur.
Pitting occurs randomly on wetted surfaces in the form of small deep cavities. Crevice corrosion occurs in narrow crevices, into which the solution can penetrate but is not flushed away during normal operation as in other, more open areas.
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