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Anechoic Coating

Last updated: February 24, 2017

What Does Anechoic Coating Mean?

An anechoic coating is a protective fluid film layer that is applied on a metal’s surface via painting or spraying to protect the metal from exposure to a moisture-rich environment. Anechoic coatings are composed of rubber or synthetic polymers. Anechoic coatings are a viable option to prevent marine corrosion.

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Corrosionpedia Explains Anechoic Coating

Anechoic coatings are mostly used in water applications such as marine exploration, submarine construction and underwater housing vessels. They are sometimes applied to a submarine’s exterior surface to reduce the ship’s acoustic signature.

Due to the water-repellent characteristic of anechoic coatings, they are ideal for reducing the moisture level on metallic surfaces and the moisture vapor transmission rate. A coating with a high moisture vapor transmission rate performs poorly as a preventive layer because it allows moisture to seep through and react with the metallic surface, ultimately causing corrosion, degradation and weakening of the surface. Protective coatings with a low moisture vapor transmission rate are advisable for preventative applications.

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