Enhancement of Wettability by Wet Surface Modification and Application of Rare-Earth Element in Sealing of Ceramic Oxide Thin Film on Al Alloy
In this paper, a ceramic oxide thin film was produced on commercial Al–Mg alloy by plasma electrolytic oxidation (PEO). The influence of PEO treatment time on the wettability of the coating was evaluated by measuring the contact angle of the coatings. It was revealed that the
PEO treated surface was hydrophilic due to the porous nature of PEO coating. The rare-earth element sealing treatment was applied to the PEO treated Al–Mg alloy using cerium-based sealing solution. The result of the electrochemical study exhibited that the Ce-sealed PEO coating showed
two orders of magnitude lower corrosion current density than the substrate, indicating a significant improvement in corrosion resistance. It is supposed that effective sealing by improved wettability through nanoscale porosity in the ceramic oxide may exert synergistic effects with the corrosion
protection effect of Ce element.
Keywords: Cerium; Electrochemical Properties; Oxides; Plasma Electrolytic Oxidation; Thin Film
Document Type: Research Article
Affiliations: 1: Korea Testing and Research Institute (KTR), Ulsan, 44412, Korea 2: Department of Marine Engineering, Mokpo Maritime University, 58628, Korea
Publication date: 01 November 2016
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Ingenta Connect is not responsible for the content or availability of external websites
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content