Self-lubricating chromium carbide/amorphous hydrogenated carbon nanocomposite coatings: A new alternative to tungsten carbide/amorphous hydrogenated carbon

C. Mitterer, M. Lechthaler, G. Gassner, G. A. Fontalvo, L. Tóth, B. Pécz, M. Raible, K. Maier, E. Bergmann

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In the automotive industry, there is an increasing demand to apply self-lubricious coatings to reduce fuel and oil consumption. Within this work, self-lubricious nanocomposite coatings consisting of 1-3.5 nm sized CrC nanocrystals embedded in an amorphous hydrogenated carbon (a-C:H) matrix have been developed in a laboratory-scale sputtering system and up-scaled to a production-type plant. The nanostructure and composition of these coatings are presented and correlated to mechanical and tribological properties. With hardness values of about 11 GPa, dry-sliding friction coefficients between 0.08 and 0.18, and wear rates between 3.9×10-16 and 2.8×10-15 m3/N/m, the coatings outperform present state-of-the-art WC/a-C:H coatings and seem to be excellent candidates for applications in automotive engines and drivetrain systems.

Original languageEnglish
Pages (from-to)751-757
Number of pages7
JournalProceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
Volume223
Issue number5
DOIs
Publication statusPublished - Aug 1 2009

Fingerprint

chromium carbides
tungsten carbides
Tungsten carbide
Chromium
Carbides
Nanocomposites
nanocomposites
Carbon
coatings
Coatings
carbon
Fuel Oils
fuel oils
dry friction
sliding friction
fuel consumption
Automotive industry
Nanocrystals
coefficient of friction
Sputtering

Keywords

  • Chromium carbide/amorphous hydrogenated carbon
  • Diamond-like carbon
  • Self-lubricious coatings
  • Sputtering

ASJC Scopus subject areas

  • Mechanical Engineering
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Self-lubricating chromium carbide/amorphous hydrogenated carbon nanocomposite coatings : A new alternative to tungsten carbide/amorphous hydrogenated carbon. / Mitterer, C.; Lechthaler, M.; Gassner, G.; Fontalvo, G. A.; Tóth, L.; Pécz, B.; Raible, M.; Maier, K.; Bergmann, E.

In: Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, Vol. 223, No. 5, 01.08.2009, p. 751-757.

Research output: Contribution to journalArticle

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