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

10 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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author = "H. Ronkainen and O. Elomaa and S. Varjus and L. Kilpi and T. Jaatinen and J. Koskinen",
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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 -