Advanced
search

To read this content please select one of the options below:

Tribological behaviours of surface-modified serpentine powder as lubricant additive

Yawen Zhang (School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai, PR China and Chinese Academy of Sciences State Key Lab of Solid Lubrication, Lanzhou Institute of Chemical Physics, Lanzhou, PR China)
Zhipeng Li (School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai, PR China)
Jincan Yan (School of Chemistry and Chemical Engineering, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Shanghai Jiaotong University, Shanghai, PR China)
Tianhui Ren (School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai, PR China)
Yidong Zhao (Institute of High Energy Physics, Beijing Synchrotron Radiation Facility, Chinese Academy of Sciences, Beijing, PR China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 8 February 2016

367

Abstract

Purpose

The aim of this paper is to study the tribological performance and self-repairing performance of surface-modified nanoscale serpentine powders as lubricant additives in the mineral base oil (5-CST).

Design/methodology/approach

Fourier transform infrared spectroscopy spectra and thermo-gravimetric analysis of both modified and unmodified serpentine were performed to analyse their grafting ratio and suspension after modified using a long-chain naphthene aliphatic acid. The tribological properties of surface-modified serpentine as lubricant additives in 5-CST were evaluated and the worn surfaces were investigated by X-ray photoelectron spectroscopy (XPS) and X-ray absorption near edge structure (XANES).

Findings

The results show that the serpentine particles have high grafting ratio, improving the dispersity in 5-CST. When the serpentine concentration of 1.00 weight per cent is used as additives in 5-CST, friction coefficient reduces by 14.80 per cent under 294 N and wear scar diameter (WSD) decreases by 11.82 per cent. The results of X-ray absorption near edge structure and XANES show that the adsorption and tribochemical reactions occur to form self-repairing lubrication films.

Originality/value

The paper illustrates a tribofilm form on the rubbed surface, which is responsible for the decrease in friction and wear, mainly containing iron oxides, silicon oxides, magnesium oxides and organic compounds. The results are useful for further applications in advanced environmental friendly lubricating oils and additives.

Keywords

Acknowledgements

The authors are grateful to NSFC No. 21272157 and the open projects of The Key State Lab of Solid Lubrication in Lanzhou of China (Grant No. 1,205) for the financial support to the work reported here. And we gratefully thank The Key State Lab of Solid Lubrication for the XPS analysis.

Citation

Zhang, Y., Li, Z., Yan, J., Ren, T. and Zhao, Y. (2016), "Tribological behaviours of surface-modified serpentine powder as lubricant additive", Industrial Lubrication and Tribology, Vol. 68 No. 1, pp. 1-8. https://doi.org/10.1108/ILT-01-2013-0005

Publisher

:

Emerald Group Publishing Limited

Copyright © 2016, Emerald Group Publishing Limited

Related articles

Manage cookies

We’re listening — tell us what you think

Join us on our journey