Abstract
The mechanisms of formation and dissolution of anodic oxide films on pure aluminium rotating disc specimens in alkaline solution have been investigated using galvanostatic anodizing, potentiostatic anodizing, potential drop experiments and impedance spectroscopy. It was found that in alkaline solution the strength of the applied electric field accelerates the formation of the anodic oxide film, while it retards its dissolution, indicating electrochemical formation of the film and a complete lack of its field-assisted dissolution. The rate of growth and the thickness of the anodic oxide film were observed to decrease with an increasing rate of specimen rotation as a result of accelerated chemical film dissolution due to rapid removal of aluminate ions from and fast supply of hydroxide ions towards the film/solution interface.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
