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  • Load-carrying capacity of WC/C-coated gears lubricated with a low-viscosity oil
    Kržan, Boris
    The application of low-friction coatings on the surfaces of gear teeth is primarily motivated by the increasing demands for load-carrying capacity or the rolling-contact fatigue life. Despite the ... costs of manufacturing being higher, better performance is an important consideration for many demanding applications, which means that coated gears are being evaluated on a continuous basis. In the present study we have investigated the load-carrying capacity of WC/C-coated gears that were lubricated with an oil blend that was formulated in-house. The gear tests with the coated and un-coated gears were carried out with a reduced level of oil that corresponds to an immersion depth of three times the modulus of the gear. A significantly higher load-carrying capacity was found for the WC/C-coated gears lubricated with a tailored, low-viscosity oil in comparison to the standard case-carburized gears lubricated with a conventional gear oil of a similar viscosity. The carburized gears failed due to scuffing on the pinion tip, while coating thinning on the pinion face and coating fracture in the wheel-root area are the dominant failure mechanisms for WC/C-coated gears. An approximately 40 % lower roughness was found on the coated gear flanks.
    Vir: Lubrication science. - ISSN 0954-0075 (Vol. 28, iss. 3, Apr. 2016, str. 127-139)
    Vrsta gradiva - članek, sestavni del
    Leto - 2016
    Jezik - angleški
    COBISS.SI-ID - 14157339

    Povezava(-e):

    http://onlinelibrary.wiley.com/wol1/doi/10.1002/ls.1305/full
    DOI

vir: Lubrication science. - ISSN 0954-0075 (Vol. 28, iss. 3, Apr. 2016, str. 127-139)

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