Tribological properties of Mo-S-C coating deposited by pulsed d.c. magnetron sputtering

T. Vitu*, T. Huminiuc, G. Doll, E. Bousser, A. Matthews, T. Polcar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Transition metal dichalcogenides such as MoS2 are widely used as solid lubricants for vacuum applications. On the other hand, diamond-like carbon coatings exhibit excellent sliding properties in the ambient environment. Our Mo-S-C coatings deposited by pulsed d.c. sputtering combine both structures to obtain stable properties regardless of the testing conditions. The coatings were studied using HR-TEM and Raman spectroscopy, revealing amorphous nature of the coating. The tribological properties were evaluated by pin-on-disc method. The results showed high lubrication ability in all the testing conditions. HR-TEM and Raman spectroscopy were employed to show the structural characteristics of the wear traces. Our results indicate that the low-friction effect should be attributed to carbon structure re-arrangement since expected wear-induced MoS2 formation was not observed.

Original languageEnglish
Article number203939
Number of pages10
JournalWear
Volume480-481
Early online date21 May 2021
DOIs
Publication statusPublished - 15 Sep 2021

Keywords

  • Mo-S-C
  • Raman spectroscopy
  • TMD
  • Tribology

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