Conversion coating

Type of metal coating From Wikipedia, the free encyclopedia

A conversion coating is a chemical or electro-chemical treatment applied to manufactured parts that superficially converts the material into a thin adhering coating of an insoluble compound. These coatings are commonly applied to protect the part against corrosion, to improve the adherence of other coatings, for lubrication, or for aesthetic purposes.[1][2][3][4]

Types

The most common conversion coating processes for metal parts with industrial use include

Non-metallic substrates

Conversion coatings have been studied for non-metallic substrates, such as for protection of fluorozirconate glasses used in optoelectronics.[12]

Regulations

US military specifications for conversion coatings include MIL-DTL-5541, MIL-DTL-81706, and MIL-DTL-5574, all dealing with aluminum.

See also

References

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