Toward a nearly defect-free coating via high-energy plasma sparks
- Collection with item attached
- Item details URL
- Toward a nearly defect-free coating via high-energy plasma sparks
- A nearly defect-free metal-oxide-based coating structure was made on Al-Mg-Si alloy by plasma electrolytic oxidation at high current density accompanying high-energy plasma sparks. The present coatings were performed at two different current densities of 50 and 125 mA/cm(2) in the alkaline-phosphate-based electrolytes with different concentrations of sodium hexafluoroaluminate (Na3AlF6). The addition of ( Na3AlF6) to the electrolyte used in this study would result in a decrease in the size of the micropore, and a reasonably defect-free coating structure was achieved in the sample treated at high current density of 125 mA/cm(2). This was attributed mainly to the hydrolysis of AlF63- triggered by intense plasma sparks, which resulted in a uniform distribution of fluorine throughout the coating. Accordingly, the corrosion performance of the coating formed in the electrolyte containing 1.5 g/L Na3AlF6 at 125 mA/cm(2) was improved significantly as confirmed by electrochemical impedance analysis. In addition, the formation mechanism of the nearly defect-free coating in the presence of Na3AlF6 was discussed.
- Made available in Cube on 2018-09-28T16:05:25Z (GMT). No. of bitstreams: 0
- Kaseem, Mosab
- Yang, Hae Woong
- Ko, Young Gun
- SCIENTIFIC REPORTS(7)
- Funding Program
- Project ID
- Rep.of Korea
- Project Name
- Advanced Regional-Linked Education Program for Cutting-Edge Functional Materials for Next-Generation Creative Industries.
- Files in This Item
There are no attached files.