Zinc-magnesium-pigment rich coatings for corrosion protection of aluminum alloys

► Successful test of zinc-magnesium pigments for corrosion protection of aluminum. ► Best pigment type zinc with 26 wt% magnesium. ► More than 10,000 h positive salt spray test. ► Corrosion potential for zinc with 26/20/16 wt% magnesium lower than AA2024 alloy. ► Cathodic potential increase faster than observed protection activity time.