Effect of the high doze of N+(1018cm–2) ions implantation into the (TiHfZrVNbTa)N nanostructured coating on its microstructure, elemental and phase compositions, and physico-mechanical properties

A. D. Pogrebnjak, S. O. Bor’ba, Ya O. Kravchenko, E. O. Tleukenov, C. V. Plotnikov, V. M. Beresnev, Y. Takeda, K. Oyoshi, A. I. Kupchishin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Structure and properties of (TiHfZrVNbTa)N nanostructured multicomponent coatings implanted with a very high (1018cm–2) dose of N+ions have been studied. As a result of the implantation a multilayer structure has been formed in the surface layer of the coating. The structure is composed of amorphous, nanocrystalline (disperse) and nanostructured (with the initial sizes) nanolayers. In the depth of the coating two phases (with the fcc and hcp structures) having a small volume content are formed. The nitrogen concentration near the surface attains 90 at % and then decreases with the depth. In the initial state after the deposition the coating nanohardness values are from 27 to 34 GPa depending on the conditions of the deposition. As a result of the implantation the hardness is decreased approximately by the depth of the projective ions range, i.e., to 12 GPa and then increases with the depth to 23 GPa. The investigations were conducted using the Rutherford backscattering, scanning electron microscopy with the microanalysis, high resolution electron microscopy (with local microanalysis), X-ray diffraction, nanoindentation, and wear tests.

Original languageEnglish
Pages (from-to)393-401
Number of pages9
JournalJournal of Superhard Materials
Volume38
Issue number6
DOIs
Publication statusPublished - 1 Nov 2016
Externally publishedYes

Keywords

  • elemental and phase compositions
  • implantation
  • microstructure
  • nanostructured multicomponent coating
  • physico-mechanical properties

ASJC Scopus subject areas

  • Materials Science(all)
  • Inorganic Chemistry

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