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Pinhole

Last updated: July 19, 2024

What Does Pinhole Mean?

A pinhole is a pore-like penetration that is present in paints and coatings due to the entrapment of moisture, air, solvents or other fluids. The presence of pinholes increases the corrosion rate experienced on a surface due to the moisture pockets that cause crevice corrosion, pitting and increased redox reactions.

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Corrosionpedia Explains Pinhole

Pinholes are a coating defect (holiday) can be prevented by the use of surface tension reducing agents to transport air bubbles to the surface of a coating.

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