Numerical simulation of residual stresses in diamond coating on Ti-6Al-4V substrate

Z. Nibennaoune, D. George, Said Ahzi, D. Ruch, Y. Remond, J. J. Gracio

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this paper, we present numerical simulations of the residual stresses developed between diamond coatings and Ti-6Al-4V substrates when using chemical vapour deposition technique. The large difference in thermal expansion coefficients of diamond and titanium alloys results in high residual stresses in the diamond film. This could lead to interfacial cracking and material failure. The finite element method was used to simulate the cooling process of diamond films at various thicknesses and deposited at temperatures ranging from 600 °C to 900 °C. The influence of different parameters such as temperature, film thickness, material characteristics, geometry and edge effects are investigated for different case geometries. The film debonding and cracking is discussed and numerical results are compared with existing experimental and numerical results. Finally, some propositions are made to enhance the experimental process in order to reduce the residual stress intensities and the possible material degradation.

Original languageEnglish
Pages (from-to)3260-3266
Number of pages7
JournalThin Solid Films
Volume518
Issue number12
DOIs
Publication statusPublished - 2 Apr 2010
Externally publishedYes

Fingerprint

Diamond
residual stress
Residual stresses
Diamonds
diamonds
Diamond films
diamond films
coatings
Coatings
Computer simulation
Substrates
Geometry
simulation
Debonding
titanium alloys
geometry
Titanium alloys
Thermal expansion
Film thickness
Chemical vapor deposition

Keywords

  • Diamond film
  • Finite element analysis
  • Residual stress
  • Titanium alloy

ASJC Scopus subject areas

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

Cite this

Numerical simulation of residual stresses in diamond coating on Ti-6Al-4V substrate. / Nibennaoune, Z.; George, D.; Ahzi, Said; Ruch, D.; Remond, Y.; Gracio, J. J.

In: Thin Solid Films, Vol. 518, No. 12, 02.04.2010, p. 3260-3266.

Research output: Contribution to journalArticle

Nibennaoune, Z, George, D, Ahzi, S, Ruch, D, Remond, Y & Gracio, JJ 2010, 'Numerical simulation of residual stresses in diamond coating on Ti-6Al-4V substrate', Thin Solid Films, vol. 518, no. 12, pp. 3260-3266. https://doi.org/10.1016/j.tsf.2009.12.092
Nibennaoune, Z. ; George, D. ; Ahzi, Said ; Ruch, D. ; Remond, Y. ; Gracio, J. J. / Numerical simulation of residual stresses in diamond coating on Ti-6Al-4V substrate. In: Thin Solid Films. 2010 ; Vol. 518, No. 12. pp. 3260-3266.
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