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Properties of UV-irradiated TiO2, ZrO2, and TiO2-ZrO2 films as pore-sealing layers on micro-arc-oxidized aluminum alloys

  • Ying Li
  • Hanxiao Yang
  • Yuhang He
  • Qiancheng Zhang
  • Yonggui Shi
  • Yuanqing ChenEmail author
Original Paper: Functional coatings, thin films and membranes including deposition techniques

Abstract

In this paper, the UV-assisted sol–gel route was employed to fabricate the TiO2 pore-sealing films on the micro-arc-oxidized (MAO) aluminum alloys (MAO/Al). As compared with the TiO2 film derived from traditional sol–gel method, the UV-irradiated TiO2 film showed a structure with less cracks, resulting in enhanced electrode potential, higher impedance, and lower corrosion current. Further, we investigated and compared the properties of the UV-treated amorphous oxides, including the TiO2, ZrO2, and TiO2-ZrO2 films on MAO/Al. It was found that their corrosion resistances were related to the metallic–oxygen–metallic (M–O–M) lattice in the films. The MAO/Al sealed with UV-irradiated ZrO2 pore-sealing film showed higher corrosion resistance than the samples sealed with UV-irradiated TiO2 film or TiO2-ZrO2 film, which was owing to the fact that a larger amount of M–O–M lattice formed in the UV-ZrO2 film during the UV irradiation.

Highlights

  • UV-assisted sol-gel ZrO2, TiO2, and TiO2-ZrO2 layers were prepared on micro-arc oxidized aluminum alloys.

  • The ZrO2 pore-sealing layer showed enhanced anti-corrosion properties than that of TiO2, and TiO2-ZrO2 layers.

  • The formation of M-O-M bonds was contributed to the enhancement of anti-corrosion properties.

Keywords

UV irradiation Corrosion Micro-arc oxidation Aluminum alloys 

Notes

Acknowledgements

This work is supported by the National Key Research and Development Program of China (2017YFB1102801), the Open Project for Key Laboratory of Intense Dynamic Loading and Effect (KLIDLE1801), the Aviation Science Foundation Project (20170970002) and the Natural Science Foundation of Shaanxi Provincial Department of Education (No. 17JK0571).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Ying Li
    • 1
    • 2
  • Hanxiao Yang
    • 3
  • Yuhang He
    • 3
  • Qiancheng Zhang
    • 4
    • 5
  • Yonggui Shi
    • 3
  • Yuanqing Chen
    • 3
    Email author
  1. 1.Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structure, Institute of Advanced Structure TechnologyBeijing Insititue of TechnologyBeijingChina
  2. 2.State Key Laboratory of Explosion Science and TechnologyBeijing Institute of TechnologyBeijingChina
  3. 3.School of Materials Science and EngineeringXi’an University of TechnologyXi’anChina
  4. 4.State Key Laboratory for Strength and Vibration of Mechanical StructuresXi’an Jiaotong UniversityXi’anChina
  5. 5.Key Laboratory of Intense Dynamic Loading and EffectNorthwest Institute of Nuclear TechnologyXi’anChina

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