Tribological analysis of TiN and DLC coated contacts by 3D FEM modelling and stress simulation

Kenneth Holmberg (Corresponding Author), Helena Ronkainen, Anssi Laukkanen, Kim Wallin, Ali Erdemir, Osman Eryilmaz

Research output: Contribution to journalArticleScientificpeer-review

43 Citations (Scopus)

Abstract

Surface coatings, like titanium nitride (TiN) and diamond-like carbon (DLC) coatings, offer high wear resistance and good friction performance for a wide range of applications. With novel advanced techniques like modelling and simulation, the performance of these coatings can be predicted under a wide range of loading conditions. This provides valuable information for the coating design and for the use of coatings in different applications. A previously developed three-dimensional finite element method (FEM) model was used for calculating the first principal stress distribution in a scratch test contact as a spherical diamond tip is moving with increased load on DLC and TiN coated high speed steel surfaces containing no residual stresses. The used three-dimensional model is comprehensive in the sense that it considers elastic and plastic behaviour of the contacting surfaces. The first cracks to appear on the surface are angular cracks on the edge of the scratch groove. This corresponds to the region of high two directional tensile stresses occurring in FEM stress simulations at the edge of the scratch groove. The coating/substrate stiffness ratio influences considerably on the coating behaviour. The TiN coating that had higher Young's modulus compared to the substrate material experienced high tensile stresses when loaded by the diamond stylus. The DLC coating that had lower stiffness compared to substrate material experienced comparatively low tensile stresses. The DLC coatings had maximum tensile stresses in the range of 700–900 MPa. The TiN coatings had tensile stresses in the range 2200–3000 MPa. The coating thickness had only minor effect on the maximum tensile stress level for the 1 and 2 μm thick coatings. The location of the experimentally observed first crack in the surface corresponds to the location of maximum tensile stress concentrations in the stress simulations and the direction of the observed crack corresponds with the stress components in the calculated stress field. The role of residual stresses is discussed.
Original languageEnglish
Pages (from-to)877-884
Number of pages8
JournalWear
Volume264
Issue number9-10
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed
Event12th Nordic Symposium on Tribology: NORDTRIB 2006 - Helsingør, Denmark
Duration: 7 Jul 20069 Jul 2006

Fingerprint

Diamond
Titanium nitride
titanium nitrides
Diamonds
finite element method
Carbon
diamonds
coatings
Finite element method
Coatings
carbon
tensile stress
Tensile stress
simulation
cracks
Cracks
grooves
titanium nitride
stress distribution
residual stress

Keywords

  • Coating
  • FEM analysis
  • TiN
  • DLC
  • ProperTune

Cite this

Holmberg, Kenneth ; Ronkainen, Helena ; Laukkanen, Anssi ; Wallin, Kim ; Erdemir, Ali ; Eryilmaz, Osman. / Tribological analysis of TiN and DLC coated contacts by 3D FEM modelling and stress simulation. In: Wear. 2008 ; Vol. 264, No. 9-10. pp. 877-884.
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abstract = "Surface coatings, like titanium nitride (TiN) and diamond-like carbon (DLC) coatings, offer high wear resistance and good friction performance for a wide range of applications. With novel advanced techniques like modelling and simulation, the performance of these coatings can be predicted under a wide range of loading conditions. This provides valuable information for the coating design and for the use of coatings in different applications. A previously developed three-dimensional finite element method (FEM) model was used for calculating the first principal stress distribution in a scratch test contact as a spherical diamond tip is moving with increased load on DLC and TiN coated high speed steel surfaces containing no residual stresses. The used three-dimensional model is comprehensive in the sense that it considers elastic and plastic behaviour of the contacting surfaces. The first cracks to appear on the surface are angular cracks on the edge of the scratch groove. This corresponds to the region of high two directional tensile stresses occurring in FEM stress simulations at the edge of the scratch groove. The coating/substrate stiffness ratio influences considerably on the coating behaviour. The TiN coating that had higher Young's modulus compared to the substrate material experienced high tensile stresses when loaded by the diamond stylus. The DLC coating that had lower stiffness compared to substrate material experienced comparatively low tensile stresses. The DLC coatings had maximum tensile stresses in the range of 700–900 MPa. The TiN coatings had tensile stresses in the range 2200–3000 MPa. The coating thickness had only minor effect on the maximum tensile stress level for the 1 and 2 μm thick coatings. The location of the experimentally observed first crack in the surface corresponds to the location of maximum tensile stress concentrations in the stress simulations and the direction of the observed crack corresponds with the stress components in the calculated stress field. The role of residual stresses is discussed.",
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author = "Kenneth Holmberg and Helena Ronkainen and Anssi Laukkanen and Kim Wallin and Ali Erdemir and Osman Eryilmaz",
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Tribological analysis of TiN and DLC coated contacts by 3D FEM modelling and stress simulation. / Holmberg, Kenneth (Corresponding Author); Ronkainen, Helena; Laukkanen, Anssi; Wallin, Kim; Erdemir, Ali; Eryilmaz, Osman.

In: Wear, Vol. 264, No. 9-10, 2008, p. 877-884.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Tribological analysis of TiN and DLC coated contacts by 3D FEM modelling and stress simulation

AU - Holmberg, Kenneth

AU - Ronkainen, Helena

AU - Laukkanen, Anssi

AU - Wallin, Kim

AU - Erdemir, Ali

AU - Eryilmaz, Osman

PY - 2008

Y1 - 2008

N2 - Surface coatings, like titanium nitride (TiN) and diamond-like carbon (DLC) coatings, offer high wear resistance and good friction performance for a wide range of applications. With novel advanced techniques like modelling and simulation, the performance of these coatings can be predicted under a wide range of loading conditions. This provides valuable information for the coating design and for the use of coatings in different applications. A previously developed three-dimensional finite element method (FEM) model was used for calculating the first principal stress distribution in a scratch test contact as a spherical diamond tip is moving with increased load on DLC and TiN coated high speed steel surfaces containing no residual stresses. The used three-dimensional model is comprehensive in the sense that it considers elastic and plastic behaviour of the contacting surfaces. The first cracks to appear on the surface are angular cracks on the edge of the scratch groove. This corresponds to the region of high two directional tensile stresses occurring in FEM stress simulations at the edge of the scratch groove. The coating/substrate stiffness ratio influences considerably on the coating behaviour. The TiN coating that had higher Young's modulus compared to the substrate material experienced high tensile stresses when loaded by the diamond stylus. The DLC coating that had lower stiffness compared to substrate material experienced comparatively low tensile stresses. The DLC coatings had maximum tensile stresses in the range of 700–900 MPa. The TiN coatings had tensile stresses in the range 2200–3000 MPa. The coating thickness had only minor effect on the maximum tensile stress level for the 1 and 2 μm thick coatings. The location of the experimentally observed first crack in the surface corresponds to the location of maximum tensile stress concentrations in the stress simulations and the direction of the observed crack corresponds with the stress components in the calculated stress field. The role of residual stresses is discussed.

AB - Surface coatings, like titanium nitride (TiN) and diamond-like carbon (DLC) coatings, offer high wear resistance and good friction performance for a wide range of applications. With novel advanced techniques like modelling and simulation, the performance of these coatings can be predicted under a wide range of loading conditions. This provides valuable information for the coating design and for the use of coatings in different applications. A previously developed three-dimensional finite element method (FEM) model was used for calculating the first principal stress distribution in a scratch test contact as a spherical diamond tip is moving with increased load on DLC and TiN coated high speed steel surfaces containing no residual stresses. The used three-dimensional model is comprehensive in the sense that it considers elastic and plastic behaviour of the contacting surfaces. The first cracks to appear on the surface are angular cracks on the edge of the scratch groove. This corresponds to the region of high two directional tensile stresses occurring in FEM stress simulations at the edge of the scratch groove. The coating/substrate stiffness ratio influences considerably on the coating behaviour. The TiN coating that had higher Young's modulus compared to the substrate material experienced high tensile stresses when loaded by the diamond stylus. The DLC coating that had lower stiffness compared to substrate material experienced comparatively low tensile stresses. The DLC coatings had maximum tensile stresses in the range of 700–900 MPa. The TiN coatings had tensile stresses in the range 2200–3000 MPa. The coating thickness had only minor effect on the maximum tensile stress level for the 1 and 2 μm thick coatings. The location of the experimentally observed first crack in the surface corresponds to the location of maximum tensile stress concentrations in the stress simulations and the direction of the observed crack corresponds with the stress components in the calculated stress field. The role of residual stresses is discussed.

KW - Coating

KW - FEM analysis

KW - TiN

KW - DLC

KW - ProperTune

U2 - 10.1016/j.wear.2006.12.084

DO - 10.1016/j.wear.2006.12.084

M3 - Article

VL - 264

SP - 877

EP - 884

JO - Wear

JF - Wear

SN - 0043-1648

IS - 9-10

ER -