How does a zinc flake coating protect against corrosion?
A zinc flake coating is the selfless saviour that stands protectively in front of your steel components when corrosion threatens.
What sounds like a chivalrous fairy tale is a classic type of cathodic corrosion protection: As a less noble metal, that sacrifices itself when environmental influences cause corrosion. The protective layer of aluminium and zinc is thus gradually removed, while the substance of your component remains untouched. It still fulfils its requirements like on the first day, even after a long time in difficult environments.
The advantages of a zinc flake coating
No hydrogen embrittlement
If hydrogen atoms penetrate the metal lattice of steel, there is a risk of hydrogen-induced embrittlement - in short: hydrogen embrittlement. The steel component loses many of its properties as a result; material fatigue occurs. To prevent this, your component is gently prepared for the zinc flake coating process. Instead of pickling the component, it is degreased and phosphated or blasted. No hydrogen is released during the entire coating process for a zinc flake coating.
Good electrical conductivity
A zinc flake coating is not applied electrolytically. Even with corrosion protection, your component retains its electrical conductivity.
Durable corrosion protection
Properly applied, a zinc flake coating withstands the salt spray test for up to 2,000 hours. This provides your component with long-lasting protection against corrosion and thus helps to reduce costs due to material failure.
Very low layer thickness
The zinc flake overcoat effectively protects against corrosion even with a layer thickness of less than 15 μm. This makes it the ideal rust protection solution, especially for shape-sensitive components. Even with metric threaded parts, compliance with the tolerances according to DIN ISO 965 is possible.
No infiltration of the coating
In contrast to a passive rust protection layer, rust cannot find a loophole in a zinc flake coating: infiltration of the protective layer is not possible.
Resistance to chemicals
A zinc flake coating often consists of several layers. It is possible to adjust the upper layer - the topcoat - individually to the requirements and the environment of your component. As a result, the rust protection remains sustainable even in the case of particularly aggressive environmental influences.
Individualised colouring is possible
When applying the upper layer of the zinc flake coating - the topcoat - individualised colouring is possible. In this way, your component also visually meets the required demands.
Benefit from all the advantages of a zinc flake coating with microcor from EOT
Eibach Oberflächentechnik GmbH
Golsberger Str. 3
D-58513 Lüdenscheid
+49 2351 9546-0
+49 2351 9546-99
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