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Microstructure and Properties of Graphene Oxide-doped TiO2 Coating on Titanium by Micro Arc Oxidation

  • Yu Gao (高羽)
  • Wei Yang (杨巍)Email author
  • Dapeng Xu
  • Jian Chen
  • Bailing Jiang
Metallic Materials
  • 6 Downloads

Abstract

Micro arc oxidation (MAO) coatings doped with graphene oxide (GO) were prepared on pure titanium by adding GO and sodium dodecyl benzene sulfonate (SDBS) into a sodium silicate solution. The as-deposited coatings were comparatively analyzed by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The binding forces of the MAO, MAO+GO and MAO+GO+SDBS three coatings were measured by a scratch tester. The mechanical property of the three coatings was analyzed using the nano-indentation technique. The corrosion resistance of the coatings was tested by the electrochemical system in 3.5% NaCl solution. The photocatalytic activity of the prepared samples was evaluated by determining the degradation of methylene blue (MB) solution. The results showed that compared to the MAO coating, the morphologies and phase compositions of MAO+GO and MAO+GO+SDBS composite coatings were significantly different. These two composite coatings all had superior photocatalytic activity. Especially, the MAO+GO composite coating still had enhanced binding force and excellent corrosion resistance. Furthermore, the relationship between the microstructure and the properties of these three MAO coatings was analyzed.

Key words

pure titanium micro arc oxidation graphene oxide microstructure properties 

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Copyright information

© Wuhan University of Technology and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Yu Gao (高羽)
    • 1
  • Wei Yang (杨巍)
    • 1
    Email author
  • Dapeng Xu
    • 1
  • Jian Chen
    • 1
  • Bailing Jiang
    • 2
  1. 1.School of Materials Science and Chemical EngineeringXi’an Technological UniversityXi’anChina
  2. 2.School of Materials Science and EngineeringNanjing Tech UniversityNanjingChina

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