Tribological studies of rhenium doped fullerene-like MoS2 nanoparticles in boundary, mixed and elasto-hydrodynamic lubrication conditions

Lena Yadgarov, Vincenzo Petrone, Rita Rosentsveig, Yishay Feldman, Reshef Tenne, Adolfo Senatore

Research output: Contribution to journalArticlepeer-review

92 Scopus citations

Abstract

The tribological properties of rhenium-doped inorganic fullerene-like MoS2 nanoparticles were studied in poly alpha olefin oil, and compared to inorganic fullerene-like (IF) MS2 (M=Mo,W) nanoparticles and 2H-MoS2 platelets. For this purpose a rotational disc tribometer was used. Different regimes in the Stribeck curve, i.e., boundary, mixed and elasto-hydrodynamic lubrication conditions were studied. A precipitous reduction in friction and wear of oil suspensions with nanoparticles were observed for the entire IF samples. However, Re-doped IF exhibited the best results, presumably due to their reduced tribocharging and agglomeration. The various tribological mechanisms of solid state additives are discussed.

Original languageEnglish
Pages (from-to)1103-1110
Number of pages8
JournalWear
Volume297
Issue number1-2
DOIs
StatePublished - 5 Jan 2013
Externally publishedYes

Keywords

  • Boundary lubrication
  • Inorganic fullerene-like nanostructures
  • Nanotribology
  • Solid nano lubricants
  • Stick-slip

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