Anodizing and post-anodizing processes to enhance corrosion resistance of Al alloys
- Autori: Zaffora A.; Di Franco F.; Santamaria M.
- Anno di pubblicazione: 2021
- Tipologia: Articolo in rivista
- Parole Chiave: Sealing
- OA Link: http://hdl.handle.net/10447/516022
Abstract
In this work the dependence of corrosion resistance of Al alloys AA 2024-T3 on sealing treatments was studied. AA 2024-T3 samples were anodized at 14 V in a bath containing sulfuric and tartaric acids. Anodized samples were sealed with four different treatments: hot water, vapour, hot water with salts and stirred hot water. Electrochemical Impedance Spectroscopy measurements were performed to estimate samples' corrosion resistance in a solution simulating sea water environment. Samples sealed in hot water showed the highest corrosion resistance.