Lubrication improvement and friction reduction of DLC-coated sliding surfaces by in-process structuring and post polishing

Peter Andersson (Corresponding Author), Jari Koskinen, Simo Varjus, J. Kolehmainen, S. Tervakangas, W. Buss

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)

    Abstract

    The paper describes an experimental investigation on the influence of the surface roughness of diamond‐like hard carbon (DLC) coatings on the friction and wear in sliding contact against steel under conditions of starving lubrication. Experimental studies employed a reciprocating ball‐on‐flat tribometer in two different modes of operation. The study showed a micro‐lubrication effect in terms of lubrication assistance achieved by microscopic cavities in the topography of a DLC coating and good sliding behaviour even in the case of starving oil lubrication. Post‐process polishing of the coated surfaces was adopted for eliminating unnecessary friction losses due to asperity interactions and micro‐abrasive wear.
    Original languageEnglish
    Pages (from-to)97-112
    Number of pages16
    JournalTriboTest
    Volume14
    Issue number2
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed

    Keywords

    • DLC
    • carbon coatings
    • coatings
    • DLC coatings
    • friction
    • micro-lubrication
    • lubrication
    • wear

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