Zinc Rich Paint

Definition - What does Zinc Rich Paint mean?

Zinc rich paints are those paints that contain a suitably high amount of zinc dust or zinc powder mixed with organic or inorganic binders. Such zinc rich paints are applied as a topcoat on steel or other metallic surfaces that operate in harsh environmental conditions and that have a continuous risk of corrosion. The zinc dust prevents the metal from becoming corroded by simply sacrificing itself.

Zinc dust is a zinc material in the form of a powder that is also known as zinc powder.

Corrosionpedia explains Zinc Rich Paint

Zinc is an important chemical element with atomic number 30 and is found in group 12 of the periodic table. It is one of the important sacrificing elements used to control corrosion by sacrificing itself via the galvanization process.

Zinc rich paints are primarily used to protect metallic surfaces from corrosion by providing cathodic protection at the expense of the zinc contained in these paints.

Zinc rich paints and coatings are often used with the addition of a primer that acts as a secondary shield to protect the surface from corroding.
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