Talking about wire-like corrosion of anticorrosive-coated metals

2025-10-04View Original

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Filamentary corrosion is a special case of underfilm corrosion, and it occurs most easily on varnished steel at high humidity levels (65%~90%). Filamentary corrosion occurs first due to local defects or scratches on the coating, and secondly because of an electrolyte that penetrates through the coating film. Filamentary corrosion products can spread randomly beneath the paint film, with their corrosion traces typically developing in a straight or elliptical pattern. To prevent filiform corrosion, it is necessary to avoid damage or scratches to the coating layer, as well as to control humidity; for example, instruments should be stored in an environment with a humidity level of less than 55%.

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Talking about wire-like corrosion of anticorrosive-coated metals

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