Study on the Tribological Behaviors of N,N-dioctyldithiocarbamate Monolayer-Stabilized Copper Nanoparticles in Liquid Paraffin

Authors: Liu, Liu¹; Chen, Lei²; Wan, Hongqi²; Chen, Jianmin³; Zhou, Huidi³

Source: Journal of Dispersion Science and Technology, Volume 30, Number 1, January 2009 , pp. 144-147(4)

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Abstract:

Copper nanoparticles surface-modified with self-assembled monolayers of N,N-dioctyldithiocarbamate (S2CNR2, R = n-octyl) have been prepared in the presence of cetyltrimethylammonium bromide (CTAB). The trobological behaviors of the S2CNR2-coated copper nanoparticles as an additive in liquid paraffin are investigated using a block-on-ring tribometer. The results indicate that copper nanoparticles as additive in liquid paraffin are capable to greatly reduce the friction coefficient and wear rate of the steels counterparts even at an extremely low concentration. The tribochemically reacted films with Cu, FeS, Fe2O3, and SO42- formed during the friction process are contributed to the good tribological properties of the S2CNR2-coated copper nanoparticles as additive in liquid paraffin.

Keywords: Additive; copper nanoparticles; dispersion; tribological properties

Document Type: Research article

DOI: http://dx.doi.org/10.1080/01932690802313147

Affiliations: 1: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China,Graduate School, Chinese Academy of Sciences, Beijing, China,Institute of Life Science and Chemistry, Tianshui Normal Un 2: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China,Graduate School, Chinese Academy of Sciences, Beijing, China 3: State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China

Publication date: 2009-01-01