Corrosion Coating

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Definition - What does Corrosion Coating mean?

Corrosion coating is the process of covering a surface or substrate with another substance to temporarily or permanently protect it from deterioration or degradation as a result of its reaction with the environment or corrosive agents. Some corrosion coatings may not eliminate but only slow down corrosion; and some coatings, like paints and lacquers, are not only protective but decorative as well.

Corrosion coatings may be applied as liquids, gases (vapor deposition) or solids.

Corrosionpedia explains Corrosion Coating

Corrosion coating is one of the protection materials or methods used to eliminate or slow down corrosion in order for the item or part to have a longer lifespan as well as to reduce maintenance and parts replacement costs.

There are several factors to consider when choosing the appropriate corrosion coating, such as:

  • Corrosion is usually caused by a combination of various conditions and relationships between materials.
  • The type of corrosion that the part is most likely to develop (stress-corrosion cracking, uniform, galvanic, pitting, crevice or graphic corrosion).
  • How the part will be used; how long the part will be exposed to the corrosive environment and the strength of the corrosive materials.
  • The environmental conditions that the part will be exposed to (temperature, humidity, location of the part (outdoor, indoor)).
  • Quality of the part’s surface—is it free of surface porosity and other imperfections because microscopic holes can allow the corrosive agent to reach below the surface.

Users should conduct tests to confirm if the choice is indeed the right one before making the final choice.

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