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Corrosion eats up around three percent of economic output every year, which amounts to 70 billion euros in Germany alone. A polymer coating that releases corrosion-inhibiting substances when needed and even heals scratches itself is intended to limit the damage. But the various components of such a layer need to be precisely coordinated with one another. Material for school: Techmax 19: Corrosion https://www.max-wissen.de/max-hefte/t...