The formation of a hydrotalcite coating on the aluminium alloy 6060 using a spray system. (2nd January 2018)

• Record Type: Journal Article
• Authors: Zhou, Lingli; Friis, Henrik; Roefzaad, Melanie; Hansen, Kasper Bondo; Eisenhardt, Sara; Andersen, Asger; Zangenberg, Nikolaj
• Is Part Of: Clay minerals. Volume 50:Number 5(2015:Dec.)
• Page Start: 583
• Page End: 592
• Publication Date: 2018-01-02
• Subjects: Al alloy 6060, -- hydrotalcite, -- coating, -- spray system; Clay minerals -- Periodicals; Clay -- Periodicals; 549.6
• DOI: 10.1180/claymin.2015.050.5.03
• Languages: English
• ISSNs: 0009-8558

Abstract

Abstract: Coatings with the composition of Li-Al-NO3 hydrotalcite were formed on the Al alloy 6060 using a spray system. The coatings consist of crystals with a typical hydrotalcite structure. Dense, uniform and blade-like flakes cover completely the surface of the Al substrate. The coatings display a multi-layer structure with average thickness of ∼1000 nm. The hydrotalcite-coated samples performed better than those without coatings in salt-spray and filiform-corrosion tests, and further treatment involving sealing with a Mg acetate solution and dipping in a H2 O2 + Ce-based solution improved the corrosion resistance ability.