Structure, hydrophilicity and corrosion resistance of sol-gel derived Ag-containing TiO2 film on plasma nitrided 316L stainless steel

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • T. Fu
  • Z. Alajmi
  • S. Y. Yang
  • Y. M. Zhou
  • Y. Ge

Detail(s)

Original languageEnglish
Pages (from-to)85-92
Journal / PublicationJournal of Sol-Gel Science and Technology
Volume69
Issue number1
Publication statusPublished - Jan 2014

Abstract

Pure and Ag-containing TiO2 films (Ag/Ti = 3.3 at.%) are coated on plasma nitrided 316L stainless steel by sol-gel method for biomedical applications. The addition of Ag does not cause obvious change in TG-DSC curves of the dried gels. The rough surface generated by plasma nitriding and the addition of Ag improve structural integrity of the TiO2 films. X-ray diffraction reveals N loss and oxidation of the nitride layer during calcination treatment, and peaks of Ag or its oxides are not detected. X-ray photoelectron spectroscopy analysis indicates that Ag presents as metallic state in the film. Water contact angles of the coating samples decrease with UV irradiation treatment. The potentiodynamic polarization tests in a Ca-free Hank's balanced salt solution show that the TiO2 coated samples have decreased corrosion resistance due to N loss and oxidation of the nitride layer. The methods for crystallization of TiO2 gel layers with minimized or avoided structural changes of the nitride layer will be tried in order to improve corrosion resistance of the duplex treated 316L stainless steel. © 2013 Springer Science+Business Media New York.

Research Area(s)

  • Antibacterial, Corrosion, Hydrophilicity, Nitriding, Stainless steel, TiO2

Citation Format(s)

Structure, hydrophilicity and corrosion resistance of sol-gel derived Ag-containing TiO2 film on plasma nitrided 316L stainless steel. / Fu, T.; Alajmi, Z.; Yang, S. Y. et al.
In: Journal of Sol-Gel Science and Technology, Vol. 69, No. 1, 01.2014, p. 85-92.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review