Investigation of nanostructured TiSiC-Zr and TiSiC-Cr hard coatings for industrial applications

C. Vitelaru, M. Balaceanu, A. Parau, C. R. Luculescu, A. Vladescu

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

TiSiC, TiSiC-Zr and TiSiC-Cr coatings, with Zr and Cr added to TiSiC base coating system, have been prepared by cathodic arc method in a CH4 reactive atmosphere. All the coatings exhibited nanocomposite structures, mainly consisting of a mixture of crystalline face-centered cubic (FCC) carbide solid solutions, with a preferential (220) texture, and amorphous carbon phases. The coatings showed compact, homogeneous and featureless cross-sectional microstructures.Cr and Zr incorporation in TiSiC resulted in lattice distortion (from a lattice parameter of 0.4358nm for TiSiC, to 0.4536nm and 0.4320nm for TiSiC-Zr and TiSiC-Cr, respectively) and grain refinement. Also, alloying TiSiC led to a reduction of stress in the films, from -3.12GPa (TiSiC) to -2.37GPa (TiSiC-Cr) and -2.58GPa (TiSiC-Zr), and to film hardness changes (TiSiC: 35.2GPa; TiSiC-Zr: 42.1GPa; TiSiC-Cr: 31.4GPa). Of the investigated coatings, TiSiC-Zr exhibited the lower dry friction coefficient (~0.3) and the lowest wear rate (~2*10-6 mm3N-1m-1).

Original languageEnglish
Pages (from-to)21-28
Number of pages8
JournalSurface and Coatings Technology
Volume251
DOIs
Publication statusPublished - 25 Jul 2014
Externally publishedYes

Fingerprint

Hard coatings
Industrial applications
coatings
Coatings
dry friction
carbides
coefficient of friction
alloying
Grain refinement
Amorphous carbon
coating
lattice parameters
nanocomposites
solid solutions
Alloying
hardness
textures
arcs
Crystal lattices
Lattice constants

Keywords

  • Cathodic arc
  • Friction and wear
  • Structure
  • TiSiC, TiSiC-Zr and TiSiC-Cr coatings

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Investigation of nanostructured TiSiC-Zr and TiSiC-Cr hard coatings for industrial applications. / Vitelaru, C.; Balaceanu, M.; Parau, A.; Luculescu, C. R.; Vladescu, A.

In: Surface and Coatings Technology, Vol. 251, 25.07.2014, p. 21-28.

Research output: Contribution to journalArticle

Vitelaru, C. ; Balaceanu, M. ; Parau, A. ; Luculescu, C. R. ; Vladescu, A. / Investigation of nanostructured TiSiC-Zr and TiSiC-Cr hard coatings for industrial applications. In: Surface and Coatings Technology. 2014 ; Vol. 251. pp. 21-28.
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AB - TiSiC, TiSiC-Zr and TiSiC-Cr coatings, with Zr and Cr added to TiSiC base coating system, have been prepared by cathodic arc method in a CH4 reactive atmosphere. All the coatings exhibited nanocomposite structures, mainly consisting of a mixture of crystalline face-centered cubic (FCC) carbide solid solutions, with a preferential (220) texture, and amorphous carbon phases. The coatings showed compact, homogeneous and featureless cross-sectional microstructures.Cr and Zr incorporation in TiSiC resulted in lattice distortion (from a lattice parameter of 0.4358nm for TiSiC, to 0.4536nm and 0.4320nm for TiSiC-Zr and TiSiC-Cr, respectively) and grain refinement. Also, alloying TiSiC led to a reduction of stress in the films, from -3.12GPa (TiSiC) to -2.37GPa (TiSiC-Cr) and -2.58GPa (TiSiC-Zr), and to film hardness changes (TiSiC: 35.2GPa; TiSiC-Zr: 42.1GPa; TiSiC-Cr: 31.4GPa). Of the investigated coatings, TiSiC-Zr exhibited the lower dry friction coefficient (~0.3) and the lowest wear rate (~2*10-6 mm3N-1m-1).

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