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What is Passivation?

Passivation is a chemical reaction that causes a material to be less affected by corrosion or other environmental factors. Passivation causes a micro-coating to be applied on the surface of the material by allowing the material to oxidize, then converting the oxidation to a metalophosphate. This surface is then sealed into the part using either a manganese or zinc compound.

Description

Applications

Black Oxide, Electroless Nickel Plating, Zinc Plating, Tumbling, Media Blasting

Applicable materials

Steel, Stainless Steel

Color/Specification

n/a

Benefits of Passivation

Formation of protective film
Delays metal corrosion
Enhances corrosion resistance
Changes metal surface state
Electrode potential jump
Stable passivation film that is difficult to destroy
Does not increase workpiece thickness or change color
Improves product precision and added value
Suitable for various metal materials
Tagged: Passivation

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