Protective Sliding Carbon-Based Nanolayers Prepared by Argon or Nitrogen Ion-Beam Assisted Deposition on Ti6Al4V Alloy

0456533 - ÚFCH JH 2017 RIV US eng J - Journal Article
Vlčák, P. - Jirka, Ivan
Protective Sliding Carbon-Based Nanolayers Prepared by Argon or Nitrogen Ion-Beam Assisted Deposition on Ti6Al4V Alloy.
Journal of Nanomaterials. Roč. 2016, č. 2016 (2016), 1697090. ISSN 1687-4110. E-ISSN 1687-4129
Institutional support: RVO:61388955
Keywords : carbon-based nanolayers * Ti6Al4V * nanotechnology
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.871, year: 2016

The microstructure and the surface properties of samples coated by carbon-based nanolayer were investigated in an effort to increase the surface hardness and reduce the coefficient of friction of the Ti6Al4V alloy. Protective carbon-based nanolayers were fabricated by argon or nitrogen ion-beam assisted deposition at ion energy of 700 eV on Ti6Al4V substrates. The Raman spectra indicated that nanolayers had a diamond-like carbon character with sp2 rich bonds. The TiC and TiN compounds formed in the surface area were detected by X-ray diffraction. Nanoscratch tests showed increased adhesion of a carbon-based nanolayer deposited with ion assistance in comparison with a carbon nanolayer deposited without ion assistance. The results showed that argon ion assistance leads to greater nanohardness than a sample coated by a carbon-based nanolayer with nitrogen ion assistance. A more than twofold increase in nanohardness and a more than fivefold decrease in the coefficient of friction were obtained for samples coated by a carbon-based nanolayer with ion assistance, in comparison with the reference sample.
Permanent Link: http://hdl.handle.net/11104/0257047