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Microstructure and properties of mao composite coatings containing nanorutile TiO2 particles

  • Zhenwei Li*
  • , Shichun Di
  • *Corresponding author for this work
  • School of Mechatronics Engineering, Harbin Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

Microarc oxidation (MAO) composite coatings containing rutile TiO2 were produced on 2024 aluminum alloy in an electrolyte with nanorutile TiO2 particles. The microstructure and properties of the composite coatings were analyzed by SEM, EDS, laser confocal microscope, XRD, Vickers hardness tester, scratch test and friction test, respectively. The results showed that the composite coatings consisted of γ-Al2O3, α-Al2O3, mullite and rutile TiO2. With increasing concentration of rutile TiO2 particles in the electrolyte, the compactness of the composite coatings was improved significantly. The abrasion performance of the microarc oxidation composite coatings containing rutile TiO2 was better than that of MAO coatings without rutile TiO2.

Original languageEnglish
Article number1750115
JournalSurface Review and Letters
Volume24
Issue number3
DOIs
StatePublished - 1 Apr 2017
Externally publishedYes

Keywords

  • 2024 Aluminum alloy
  • abrasion performance
  • adhesion strength
  • composite coatings
  • microarc oxidation
  • nanorutile TiO particles

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