Substitution of Chromium(VI)-based substances for corrosion protection of Aluminum- and Magnesium alloys

Substances based on Chromium (VI) are used for passivation / chromating of aluminium and magnesium alloys as a corrosion protection of the surface. These substances (chromium trioxide and dichromates) are subject to the REACH regulation and use will be forbidden from September 2017 on. The goal is to develop suitable substitutes.