Chemical, electroless chromating (yellow chromating, Alodine, chemical oxidation with ALODINE 1200) produces very thin, uniform inorganic layers of aluminium and chromium oxide hydrates. These so-called conversion layers are a type of passivation layer.
They are mainly used for corrosion protection and as a primer for subsequent painting. The yellow iridescent layers are electrically conductive, solderable and thinner than 2 µm. They are therefore used in apparatus engineering wherever corrosion protection is required but a conductive layer is essential at the same time – for example for electromagnetic compatibility – so that anodising is not an option.
Yellow chromating with ALODINE 1200
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