Author(s)

Di Shan ¹, Huan Yang ¹, Hui Shao ¹, Changqing Fang ¹, Yuzhen Wang ¹, Wei Shi ¹, Kun Wang ¹

Affiliation(s)

¹ Xi'an University of Technology, Xi'an, 710048, China

Corresponding Author

Di Shan

ABSTRACT

The pure titanium was anodized in reduced graphene oxide (rGO) / citric acid (C6H8O7) aqueous electrolyte at 50 V. Six samples were taken within 60 min based on the current-time relationship to investigate the microstructure, phase composition, hardness, and corrosion resistance. The results revealed that in the initial 2 min, the oxide film in the growth stage showed a noticeable increase in thickness. The film consisted of various non-steady state oxides such as Ti3O5 and Ti2O3. Subsequently, from 2 to 9 min, the oxide film is in the dissolution stage, characterized by a high content of lattice O^2-, high crystallinity and low structural defects. The nano-hardness and corrosion resistance of the oxide film in this stage were superior to those of other samples. Finally, from 9 to 60 min, the oxide film continued to grow slowly towards a balanced stage. The oxide film thickness increased slightly, while the lattice O^2- content decreased and structural defects increased, resulting in decreased hardness and corrosion resistance. Therefore, it is recommended to maintain the oxidation time between 5 to 9 min during the dissolution stage to achieve a high-performance oxide film.

KEYWORDS

Titanium, Anodizing, Chemical composition, Corrosion resistance

CITE THIS PAPER

Di Shan, Huan Yang, Hui Shao, Changqing Fang, Yuzhen Wang, Wei Shi, Kun Wang, Effect of anodization time on the properties of rGO doped titanium oxide films. Journal of Materials, Processing and Design (2024) Vol. 8: 81-88. DOI: http://dx.doi.org/10.23977/jmpd.2024.080210.

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