Physical Sciences and Mathematics Commons^™

Optimisation Of Anodic Oxidation Of Aluminium For Enhanced Adhesion And Corrosion Properties Of Sol-Gel Coatings., Michael Whelan, Tobin Edmond, John Cassidy, J. Colreavy, Brendan Duffy

Articles

The anodising process for clad and bare AA2024-T3 has been optimised as a surface preparation technique prior to sol-gel coating deposition. The combination of anodised aluminium surfaces and organically functionalised sol-gel chemistry have been investigated to impart elevated corrosion resistance and increased mechanical properties to the aluminium metal. A duplex anodising process has been developed to utilise the natural corrosion resistance properties of sulphuric acid anodising with the adhesion and hosting properties of phosphoric acid anodising. The novel anodising process and sol-gel sealed surfaces have been characterised using field emission scanning electron microscopy, energy dispersive x-ray spectroscopy. Performance of the …