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INFLUENCE OF FLUORIDE ION CONCENTRATIONS ON THE CORROSION BEHAVIOR OF Ta2N NANOCRYSTALLINE COATING FOR DENTAL IMPLANT APPLICATIONS

Author

Listed:
  • JIANG XU

    (Department of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, P. R. China†School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, 693 Xiongchu Avenue, Wuhan 430073, P. R. China)

  • JIN JIN MA

    (Department of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, P. R. China)

  • PAUL MUNROE

    (#x2021;School of Materials Science and Engineering, University of New South Wales, NSW 2052, Australia)

  • ZONG-HAN XIE

    (#x2020;School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, 693 Xiongchu Avenue, Wuhan 430073, P. R. China§School of Mechanical Engineering, University of Adelaide, SA 5005, Australia)

Abstract

The development of new corrosion-resistant coatings is often challenging, but strongly driven by the potential benefits such coatings hold. A nanostructured Ta2N coating was deposited on a Ti–6Al–4V substrate in an Ar–N atmosphere using a double cathode glow discharge plasma method with the aim being to improve its corrosion resistance in oral environments. The microstructure of the coating was investigated by a range of methods including XRD, SEM-EDS and TEM. The as-deposited coating exhibited densely packed fibrous structure and the individual fibers were composed of equiaxed grains with an average grain size ∼13nm, arranged along the longitudinal axis of the individual fibers. The electrochemical behavior of the Ta2N nanocrystalline coating was characterized in artificial saliva containing different NaF concentrations by a range of electrochemical techniques, including potentiodynamic measurement, EIS, capacitance and PZFC measurements. It was shown that the coating possessed superior corrosion resistance compared to uncoated Ti–6Al–4V, because its passive film exhibited higher stability against the fluoride ion attack.

Suggested Citation

  • Jiang Xu & Jin Jin Ma & Paul Munroe & Zong-Han Xie, 2018. "INFLUENCE OF FLUORIDE ION CONCENTRATIONS ON THE CORROSION BEHAVIOR OF Ta2N NANOCRYSTALLINE COATING FOR DENTAL IMPLANT APPLICATIONS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(04), pages 1-19, June.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:04:n:s0218625x1850083x
    DOI: 10.1142/S0218625X1850083X
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