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

7 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

Fingerprint

friction reduction
lubrication
Polishing
polishing
Lubrication
sliding
Carbon
Friction
carbon
friction
Wear of materials
coatings
sliding contact
Coatings
tribometers
Steel
Topography
topography
Oils
surface roughness

Keywords

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

Cite this

Andersson, Peter ; Koskinen, Jari ; Varjus, Simo ; Kolehmainen, J. ; Tervakangas, S. ; Buss, W. / Lubrication improvement and friction reduction of DLC-coated sliding surfaces by in-process structuring and post polishing. In: TriboTest. 2008 ; Vol. 14, No. 2. pp. 97-112.
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Lubrication improvement and friction reduction of DLC-coated sliding surfaces by in-process structuring and post polishing. / Andersson, Peter (Corresponding Author); Koskinen, Jari; Varjus, Simo; Kolehmainen, J.; Tervakangas, S.; Buss, W.

In: TriboTest, Vol. 14, No. 2, 2008, p. 97-112.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Lubrication improvement and friction reduction of DLC-coated sliding surfaces by in-process structuring and post polishing

AU - Andersson, Peter

AU - Koskinen, Jari

AU - Varjus, Simo

AU - Kolehmainen, J.

AU - Tervakangas, S.

AU - Buss, W.

PY - 2008

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AB - 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.

KW - DLC

KW - carbon coatings

KW - coatings

KW - DLC coatings

KW - friction

KW - micro-lubrication

KW - lubrication

KW - wear

U2 - 10.1002/tt.55

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