What do all these products have in common? They all provide a protective shield and separate the iron from its corrosive environment. How exactly the chemical reactions of the different sprays work, would, however, go beyond the limits of this blog post.
But let’s, for example, take a look at the WEICON Zinc Spray, which consists of microfine zinc flakes. Zinc protects against corrosion in two different ways. For one thing, as already mentioned, the applied layer ensures the separation of steel and its corrosive environment. Secondly, zinc provides another, more active way of corrosion protection. Chemically speaking, zinc is less precious than iron, which is why it gives off its electrons in a moist environment and therefore “sacrifices“ itself for the iron, so to speak. The correct term for this process is redox reaction.
But enough of chemistry for now. You’re probably more interested in how you can tackle rust in daily life.