Preparation and characterization of biocompatible Nb-C coatings

M. Braic, V. Braic, M. Balaceanu, A. Vladescu, C. N. Zoita, I. Titorencu, V. Jinga, F. Miculescu

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


Nb-C composite films, obtained by DC magnetron sputtering method, were investigated as possible candidates for the protective layers used in medical implants. Coatings of different carbon/niobium ratios were prepared and analyzed for elemental and phase composition, crystallographic structure, texture, corrosion behavior, and cell viability. The coating with the highest C/Nb ratio (1.9) was found to have a nanocomposite structure, in which NbC nanocrystalline phase coexists with an amorphous a-C one. The coated samples exhibited an improved corrosion resistance as compared with the Ti alloy. Cell viability measurements proved that human osteosarcoma cells are adherent to the coating surfaces, the highest viability being found for the film with the highest carbon content.

Original languageEnglish
Pages (from-to)4064-4068
Number of pages5
JournalThin Solid Films
Issue number12
Publication statusPublished - 1 Apr 2011
Externally publishedYes


  • Cell viability
  • Corrosion resistance
  • Magnetron sputtering
  • NbC coatings
  • Structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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