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Chemically Bonded Phosphate Ceramic (CBPC)

Last updated: April 10, 2019

What Does Chemically Bonded Phosphate Ceramic (CBPC) Mean?

A chemically bonded phosphate ceramic is a type of coating that is used to protect certain types of metals from corrosion. Chemically bonded phosphate ceramics are comprised of a mixture of phosphates, water, metal oxides and minerals. When applied to a base metal, a chemical reaction occurs that forms bonds between the coating and the metal.

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Corrosionpedia Explains Chemically Bonded Phosphate Ceramic (CBPC)

Because they have a relatively short pot life, chemically bonded phosphate ceramic coatings are typically applied using a plural component spraying system.

Once applied, an exothermic chemical reaction adheres the coating to the base metal via chemical bonds. These chemical bonds provide a resilient coating that is not easily removed. Chemically bonded phosphate ceramic coatings also prevent the penetration of virtually all corrosive materials. Inorganic in its composition, chemically bonded phosphate ceramics have no volatile organic compounds, making them potentially safer than other types of coatings.

Chemically bonded phosphate ceramics are used in many industries, including medical, structural and energy. Wastewater treatment also uses chemically bonded phosphate ceramics because the chemical bond formed with the metal prevents the corrosive, bacteria-filled wastewater from contacting the coated material, thus allowing it to have a longer service life.

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