Structure and corrosion resistance of Ti/TiC coatings fabricated by plasma immersion ion implantation and deposition on nickel-titanium

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

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Author(s)

  • Ali Shanaghi
  • Paul K. Chu
  • Ali Reza Sabour Rouhaghdam
  • Ruizhen Xu
  • Tao Hu

Detail(s)

Original languageEnglish
Pages (from-to)151-155
Journal / PublicationSurface and Coatings Technology
Volume229
Publication statusPublished - 25 Aug 2013

Abstract

Titanium carbide coatings have a broad range of biomedical applications because of their high hardness, low friction, excellent corrosion resistance, and good biocompatibility. NiTi alloys are also widely used in surgical implants in orthodontics and orthopedics. In order to improve the surface properties, nanostructured titanium carbide coatings are deposited on NiTi by plasma immersion ion implantation and deposition after a titanium interlayer has been fabricated on the NiTi substrate. The structure and corrosion behavior which impact the biological properties are investigated systematically by X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, atomic force microscopy, and electrochemical impedance spectroscopy in simulated body fluids at 37 °C. The TiC thin films with a C/Ti ratio of 1.087 have the (220) orientation. The EIS results demonstrate that the Ti/TiC multilayer provides significantly better corrosion resistance and stability compared to the uncoated NiTi substrate. © 2012 Elsevier B.V.

Research Area(s)

  • Biocompatibility, Corrosion resistance, Multilayered Ti/TiC coatings, Plasma immersion ion implantation and deposition

Citation Format(s)

Structure and corrosion resistance of Ti/TiC coatings fabricated by plasma immersion ion implantation and deposition on nickel-titanium. / Shanaghi, Ali; Chu, Paul K.; Sabour Rouhaghdam, Ali Reza; Xu, Ruizhen; Hu, Tao.

In: Surface and Coatings Technology, Vol. 229, 25.08.2013, p. 151-155.

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