Tribological performance and action mechanism of S -alkyl and S -benzimidazole substituted dialkyldithiocarbamates

Tribological performance and action mechanism of S -alkyl and S -benzimidazole substituted... Two new derivatives of dioctyldithiocarbamate, one containing heterocyclic group (benzimidazole) and another being an aliphatic compound, were synthesized and characterized. Their tribological performances as lubricant additives in liquid paraffin were evaluated by four-ball and SRV friction and wear testers. The results showed that S -benzimidazole substituted dioctyldithiocarbamate (BMZ–C 8 ) possesses excellent tribological properties, its friction reducing ability and anti-wear property at high loads are comparable to that of zinc dialkyldithiophosphate (ZDDP). However, the tribological performance of S -ethyl substituted dioctyldithiocarbame (HY–C 8 ) is worse than BMZ–C 8 . The rubbed surfaces were investigated using X-ray Photoelectron Spectroscopy (XPS), Auger Electron Spectroscopy (AES) and Scanning Electron Microscopy (SEM). The action mechanisms of additives were also proposed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Wear Elsevier

Tribological performance and action mechanism of S -alkyl and S -benzimidazole substituted dialkyldithiocarbamates

Wear, Volume 241 (1) – Jun 1, 2000

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Publisher
Elsevier
Copyright
Copyright © 2000 Elsevier Ltd
ISSN
0043-1648
eISSN
1873-2577
DOI
10.1016/S0043-1648(00)00345-8
Publisher site
See Article on Publisher Site

Abstract

Two new derivatives of dioctyldithiocarbamate, one containing heterocyclic group (benzimidazole) and another being an aliphatic compound, were synthesized and characterized. Their tribological performances as lubricant additives in liquid paraffin were evaluated by four-ball and SRV friction and wear testers. The results showed that S -benzimidazole substituted dioctyldithiocarbamate (BMZ–C 8 ) possesses excellent tribological properties, its friction reducing ability and anti-wear property at high loads are comparable to that of zinc dialkyldithiophosphate (ZDDP). However, the tribological performance of S -ethyl substituted dioctyldithiocarbame (HY–C 8 ) is worse than BMZ–C 8 . The rubbed surfaces were investigated using X-ray Photoelectron Spectroscopy (XPS), Auger Electron Spectroscopy (AES) and Scanning Electron Microscopy (SEM). The action mechanisms of additives were also proposed.

Journal

WearElsevier

Published: Jun 1, 2000

References

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