Properties of nanocomposite film combining hard TiN matrix with embedded fullerene-like WS2 nanoclusters

T. Polcar, D. Bharathi Mohan, C. Silviu Sandu, G. Radnoczi, A. Cavaleiro

Research output: Contribution to journalArticle

10 Citations (Scopus)


We have developed hard self-lubricant coatings combining a hard matrix (TiN) and a self-lubricant phase in the form of inorganic-like WS2 fullerene. The nanoparticles were injected from the preparation chamber directly to the sample surface during reactive sputtering from a Ti target in Ar/N 2 atmosphere. The injection of the particles led to the local oxidation of the matrix due to the flow of residual oxygen from the preparation chamber; therefore, the final composite was TiN/Ti-O-WS2. The observation of the composite film by scanning and transmission electron microscopies showed the incorporation of the WS2 nanoparticles; however, their bonding with the matrix was weak. The analysis of the wear tracks did not show any presence of WS2 in the contact.

Original languageEnglish
Pages (from-to)3191-3195
Number of pages5
JournalThin Solid Films
Issue number10
Publication statusPublished - Mar 1 2011


  • Composites
  • Fullerene-like
  • Self-lubrication
  • Sliding friction
  • Sputtering
  • Titanium nitride
  • Tribology
  • Tungsten sulfide

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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