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.
    @article{ac6457dfd55c49e1b9cc0ad1bad99c78,
    title = "Tribological analysis of TiN and DLC coated contacts by 3D FEM modelling and stress simulation",
    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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    year = "2008",
    doi = "10.1016/j.wear.2006.12.084",
    language = "English",
    volume = "264",
    pages = "877--884",
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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 -