The influence of carbon based coatings and surface finish on the tribological performance in high-load contacts

H. Ronkainen (Corresponding Author), O. Elomaa, S. Varjus, L. Kilpi, T. Jaatinen, J. Koskinen

    Research output: Contribution to journalArticleScientificpeer-review

    12 Citations (Scopus)

    Abstract

    The effect of surface finish with two types of carbon based coatings was evaluated in rolling contact twin disc tests. The surface finish grades represented the ground surface, and two polished surfaces providing average surface roughness values of Ra 0.128. µm and 0.030. µm. The twin disc test parameters were selected to represent the contact parameters of practical gear contacts with the maximum contact pressure of 1.7. GPa. The micropitting could be prohibited by polishing the surfaces or by using surface coatings. With the optimised combination of surface roughness and carbon coating the reduction of 27% in friction coefficient could be achieved with improved wear performance in twin disc tests.
    Original languageEnglish
    Pages (from-to)402-409
    JournalTribology International
    Volume96
    DOIs
    Publication statusPublished - 2016
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    contact loads
    Carbon
    coatings
    Coatings
    carbon
    surface roughness
    Surface roughness
    Polishing
    polishing
    coefficient of friction
    Gears
    grade
    Wear of materials
    Friction

    Keywords

    • coating
    • friction
    • polishing
    • surface roughness

    Cite this

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    title = "The influence of carbon based coatings and surface finish on the tribological performance in high-load contacts",
    abstract = "The effect of surface finish with two types of carbon based coatings was evaluated in rolling contact twin disc tests. The surface finish grades represented the ground surface, and two polished surfaces providing average surface roughness values of Ra 0.128. µm and 0.030. µm. The twin disc test parameters were selected to represent the contact parameters of practical gear contacts with the maximum contact pressure of 1.7. GPa. The micropitting could be prohibited by polishing the surfaces or by using surface coatings. With the optimised combination of surface roughness and carbon coating the reduction of 27{\%} in friction coefficient could be achieved with improved wear performance in twin disc tests.",
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    The influence of carbon based coatings and surface finish on the tribological performance in high-load contacts. / Ronkainen, H. (Corresponding Author); Elomaa, O.; Varjus, S.; Kilpi, L.; Jaatinen, T.; Koskinen, J.

    In: Tribology International, Vol. 96, 2016, p. 402-409.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - The influence of carbon based coatings and surface finish on the tribological performance in high-load contacts

    AU - Ronkainen, H.

    AU - Elomaa, O.

    AU - Varjus, S.

    AU - Kilpi, L.

    AU - Jaatinen, T.

    AU - Koskinen, J.

    PY - 2016

    Y1 - 2016

    N2 - The effect of surface finish with two types of carbon based coatings was evaluated in rolling contact twin disc tests. The surface finish grades represented the ground surface, and two polished surfaces providing average surface roughness values of Ra 0.128. µm and 0.030. µm. The twin disc test parameters were selected to represent the contact parameters of practical gear contacts with the maximum contact pressure of 1.7. GPa. The micropitting could be prohibited by polishing the surfaces or by using surface coatings. With the optimised combination of surface roughness and carbon coating the reduction of 27% in friction coefficient could be achieved with improved wear performance in twin disc tests.

    AB - The effect of surface finish with two types of carbon based coatings was evaluated in rolling contact twin disc tests. The surface finish grades represented the ground surface, and two polished surfaces providing average surface roughness values of Ra 0.128. µm and 0.030. µm. The twin disc test parameters were selected to represent the contact parameters of practical gear contacts with the maximum contact pressure of 1.7. GPa. The micropitting could be prohibited by polishing the surfaces or by using surface coatings. With the optimised combination of surface roughness and carbon coating the reduction of 27% in friction coefficient could be achieved with improved wear performance in twin disc tests.

    KW - coating

    KW - friction

    KW - polishing

    KW - surface roughness

    U2 - 10.1016/j.triboint.2015.04.019

    DO - 10.1016/j.triboint.2015.04.019

    M3 - Article

    VL - 96

    SP - 402

    EP - 409

    JO - Tribology International

    JF - Tribology International

    SN - 0301-679X

    ER -