from the conferences organized by TANGER Ltd.
The disadvantage of magnesium alloys is their low corrosion resistance due to high electronegativity. One of the most effective methods to improve the corrosion resistance of magnesium alloys is to form a conversion adhesive coating on their surface, followed by applying paintwork materials. Chromatic coatings are widely used as adhesion layers under the paintwork before staining magnesium and its alloys. In recent years, in world practice, as an alternative to chromate layers on magnesium and its alloys, nanoscale conversion titan- and/or zirconium- containing, and cerium-containing adhesive coatings have been used. The present work is devoted to the development of the technology for producing these coatings. It has been established that the developed passivating coatings based on the AZ31B magnesium alloy are comparable with chromate coatings in terms of corrosion resistance and protective ability. It has been established that coatings with developed adhesive sublayers have a higher adhesion strength to the base compared to coatings with chromate adhesive sublayer.
Keywords: Titanium-, zirconium-containing coatings, cerium-containing coating, corrosion protection, magnesium alloy, adhesive coatings, conversion coatings, surface treatment, chromate-free passivation© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.