Improving Corrosion and Photocatalytic Properties of Composite Oxide Layer Fabricated by Plasma Electrolytic Oxidation with NaAlO2

Siti Fatimah; Nisa Nashrah; Kadir Tekin; Young Gun Ko

doi:10.3390/ma15207055

Improving Corrosion and Photocatalytic Properties of Composite Oxide Layer Fabricated by Plasma Electrolytic Oxidation with NaAlO₂

Materials (Basel). 2022 Oct 11;15(20):7055. doi: 10.3390/ma15207055.

Authors

Siti Fatimah¹, Nisa Nashrah¹, Kadir Tekin¹, Young Gun Ko¹

Affiliation

¹ Materials Electrochemistry Group, School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Korea.

Abstract

The present work dealt with the development of a protective and functional oxide layer via one-step plasma electrolytic oxidation (PEO) on pure titanium by employing highly concentrated aluminate solution in a short processing time. A compositional analysis showed that Al₂TiO₅ active compound was formed successfully by means of Al₂O₃ incorporation when TiO₂ was spontaneously developed with the aid of plasma swarms. The electrochemical performance showed the protective and functional capabilities of the layer, which was attributed to the respective amounts of Al₂O₃ and Al₂TiO₅. Such capabilities were achieved in a short processing time, thus reducing the total production cost.

Keywords: anti-corrosive coating; corrosion; photocatalysis; plasma electrolytic oxidation; pure titanium.

Grants and funding

This research received no external funding.