| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5465310 | Surface and Coatings Technology | 2017 | 22 Pages |
Abstract
Composite plasma electrolytic oxidation (PEO) was carried out to deposit Ti-oxides directly on a substrate of Al 6061 alloy. A TiO2 (anatase)- and Al2O3-dense composite PEO film is generated on the substrate, and the corrosion resistance was examined by electrochemical analyses: potentio-dynamic polarization (PP), and electrochemical impedance spectroscopy (EIS) using an equivalent electrical circuit model. In addition, surface and cross-sectional morphologies were observed to confirm the dependence of pore size on treatment time. Using a current density of 10Â A/dm2 applied for up to 30Â min, the PEO film produced is denser, more continuous, and has smaller pores in comparison to conventional PEO specimens. In addition, the corrosion resistance observed in the electrochemical tests is enhanced for the composite PEO film in comparison to conventional PEO treatment.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Dahye Sung, Donghyun Kim, Jung-Hyun Park, Yonghwan Kim, Wonsub Chung,