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Novel Alkylborate-Dithiocarbamate lubricant additives: synthesis and tribophysical characterization

(2012) TRIBOLOGY LETTERS. 45(1). p.67-78
Author
Organization
Abstract
Boron-based lubricant additives have recently received significant attention, because of their wear-reducing and frictional properties and low pollution. At the same time, dithiocarbamate complexes with different metals have a long history of being used as multifunctional additives to lubricants. In this study, novel, environmentally friendly additives containing alkylborate and dithiocarbamate groups with alkyl or methylbenzyl substitutes in one molecule were studied. Tribological tests were performed with the additives admixed in a mineral oil using steel-on-steel contacts in a four-ball tribometer. Borate derivatives of different dithiocarbamate ligands were synthesized by several step reactions to investigate tribochemical properties of boron, sulfur, and nitrogen combined in one selected compound. Viscous liquid products were characterized by multinuclear (1)H, (13)C, and (11)B NMR spectroscopy. The surface morphology and the elemental composition of the tribofilms were investigated using an optical profiler and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). It was found that some of these novel compounds provide better antiwear performance and similar frictional properties compared with a commercially available ZnDTP package. Traces of sulfur in the tribofilms formed with both 0.2 and 1.0 wt% of alkylborate-dithiocarbamate compounds in a mineral oil were detected with EDS.
Keywords
NMR, SEM/EDS, Tribological properties, Antiwear additives, Dibenzyl and diethyl dithiocarbamates, Boron, ENGINE OILS, LIQUID PARAFFIN, SURFACE-CHEMISTRY, ZINC DITHIOPHOSPHATE, TRIAZINE DERIVATIVES, DIOCTYL DITHIOCARBAMATE, TRIBOLOGICAL PERFORMANCE, ALLERGIC CONTACT-DERMATITIS, ACTION MECHANISM, RAPESEED OIL

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Citation

Please use this url to cite or link to this publication:

MLA
Shah, FU, Sergei Glavatskih, and ON Antzutkin. “Novel Alkylborate-Dithiocarbamate Lubricant Additives: Synthesis and Tribophysical Characterization.” TRIBOLOGY LETTERS 45.1 (2012): 67–78. Print.
APA
Shah, F., Glavatskih, S., & Antzutkin, O. (2012). Novel Alkylborate-Dithiocarbamate lubricant additives: synthesis and tribophysical characterization. TRIBOLOGY LETTERS, 45(1), 67–78.
Chicago author-date
Shah, FU, Sergei Glavatskih, and ON Antzutkin. 2012. “Novel Alkylborate-Dithiocarbamate Lubricant Additives: Synthesis and Tribophysical Characterization.” Tribology Letters 45 (1): 67–78.
Chicago author-date (all authors)
Shah, FU, Sergei Glavatskih, and ON Antzutkin. 2012. “Novel Alkylborate-Dithiocarbamate Lubricant Additives: Synthesis and Tribophysical Characterization.” Tribology Letters 45 (1): 67–78.
Vancouver
1.
Shah F, Glavatskih S, Antzutkin O. Novel Alkylborate-Dithiocarbamate lubricant additives: synthesis and tribophysical characterization. TRIBOLOGY LETTERS. 2012;45(1):67–78.
IEEE
[1]
F. Shah, S. Glavatskih, and O. Antzutkin, “Novel Alkylborate-Dithiocarbamate lubricant additives: synthesis and tribophysical characterization,” TRIBOLOGY LETTERS, vol. 45, no. 1, pp. 67–78, 2012.
@article{4381008,
  abstract     = {Boron-based lubricant additives have recently received significant attention, because of their wear-reducing and frictional properties and low pollution. At the same time, dithiocarbamate complexes with different metals have a long history of being used as multifunctional additives to lubricants. In this study, novel, environmentally friendly additives containing alkylborate and dithiocarbamate groups with alkyl or methylbenzyl substitutes in one molecule were studied. Tribological tests were performed with the additives admixed in a mineral oil using steel-on-steel contacts in a four-ball tribometer. Borate derivatives of different dithiocarbamate ligands were synthesized by several step reactions to investigate tribochemical properties of boron, sulfur, and nitrogen combined in one selected compound. Viscous liquid products were characterized by multinuclear (1)H, (13)C, and (11)B NMR spectroscopy. The surface morphology and the elemental composition of the tribofilms were investigated using an optical profiler and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). It was found that some of these novel compounds provide better antiwear performance and similar frictional properties compared with a commercially available ZnDTP package. Traces of sulfur in the tribofilms formed with both 0.2 and 1.0 wt% of alkylborate-dithiocarbamate compounds in a mineral oil were detected with EDS.},
  author       = {Shah, FU and Glavatskih, Sergei and Antzutkin, ON},
  issn         = {1023-8883},
  journal      = {TRIBOLOGY LETTERS},
  keywords     = {NMR,SEM/EDS,Tribological properties,Antiwear additives,Dibenzyl and diethyl dithiocarbamates,Boron,ENGINE OILS,LIQUID PARAFFIN,SURFACE-CHEMISTRY,ZINC DITHIOPHOSPHATE,TRIAZINE DERIVATIVES,DIOCTYL DITHIOCARBAMATE,TRIBOLOGICAL PERFORMANCE,ALLERGIC CONTACT-DERMATITIS,ACTION MECHANISM,RAPESEED OIL},
  language     = {eng},
  number       = {1},
  pages        = {67--78},
  title        = {Novel Alkylborate-Dithiocarbamate lubricant additives: synthesis and tribophysical characterization},
  url          = {http://dx.doi.org/10.1007/s11249-011-9855-x},
  volume       = {45},
  year         = {2012},
}

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