Passivation

Passivation is an additional step in the galvanisation process that involves sealing off the metal coating that has been applied – zinc-nickel, for example – from the outside environment. This slows down the oxidation process of the metal coating, which improves corrosion resistance. This is used, for example on hydraulic, automotive and machine components.


What is passivation?

Passivation is an additional step in the galvanisation process. that involves sealing off the metal coating that has been applied – zinc-nickel, for example – from the outside environment. This slows down the oxidation process of the metal coating, which improves corrosion resistance. The passivation layer often determines the appearance and can give the product a colour.  Galvano Hengelo passivates your products by applying transparent zinc-nickel (white).

fabriekshal galvano


What does Galvano Hengelo do?

We apply passivation to various treatments. Among other things, Protalloy®, our zinc nickel coating. Protalloy® is a very thin top coating of 5 μm Protalloy®. This coating provides a protection against red rust (NSS) for more than 1,000 hours! It is also a hard coating (350 to 550 HV), which provides better scratch and wear resistance than zinc and zinc-iron electroplating. Protalloy® is a good basis for applying any (optical) topcoat such as a lacquer or powder coating.

More about Protalloy® (pdf) >>