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Home  > Publications  > Blog  > Corrosion protection without zinc

Tuesday, 25 February 2020

Corrosion protection without zinc

Thursday, 12 September 2013 | Posted by: Kirsten Wrede, European Coatings Journal

Facing ever stricter regulations and increasing demand for more sustainable products, zinc-based anticorrosive pigments have been under debate for a long time.

Due to their negative effects on health and environment, products that used to be standard (like chromates) are more and more substituted by non-toxic alternatives. Nevertheless, the anti-corrosive properties of zinc are significant, and still a lot of anticorrosives are zinc-based.

Now, the overall aim would be to develop substitutes that are not only zinc-free and thus more environmentally friendly than conventional products, but also maintain or even increase their performance, without losing sight of the cost.

I think that’s a quite challenging requirement profile! If all that were feasible without any fuss, wouldn’t all relevant products be zinc-free by now? What do you think is the optimal way to reach zinc-free solutions?

By the way: at the European Coatings Conference "Protective Coatings”, running today and tomorrow in Düsseldorf, two presentations will be held discussing just this issue. From what I’ve learned so far, both rely on synergies – combining two or more compounds/agents in order to come up with a positive result. I’m looking forward to hearing about these solutions!

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