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MICROSTRUCTURE AND PROPERTIES OF MAO COMPOSITE COATINGS CONTAINING NANORUTILE TiO2 PARTICLES

Author

Listed:
  • ZHENWEI LI

    (School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P. R. China)

  • SHICHUN DI

    (School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, P. R. China)

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.

Suggested Citation

  • Zhenwei Li & Shichun Di, 2017. "MICROSTRUCTURE AND PROPERTIES OF MAO COMPOSITE COATINGS CONTAINING NANORUTILE TiO2 PARTICLES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 24(03), pages 1-12, April.
    • Handle: RePEc:wsi:srlxxx:v:24:y:2017:i:03:n:s0218625x17501153
    DOI: 10.1142/S0218625X17501153
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