Polyaniline as an additive towards improving tribological properties and anti-corrosion performance of ionic liquids-based greases
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 27 March 2020
Issue publication date: 27 March 2020
Abstract
Purpose
This paper aims to explore polyaniline (PANI) as a lubricant additive to improve the anti-corrosion and tribological properties of ionic liquids (ILs) for actual applications.
Design/methodology/approach
ILs were synthesized by dissolving lithium salts in synthetic oil and were used as a base oil to prepare ILs-based greases. PANI was used as an additive. The tribological properties were investigated in detail and the anti-corrosion ability was also assessed via salt spray test. After friction test, the worn surfaces were characterized by scanning electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy to analyze the lubrication mechanisms.
Findings
PANI not only reduces the corrosion but also improves the friction reduction and anti-wear abilities of the ILs-based greases. The analysis indicates that the protective films generated on the worn surfaces were responsible for the preferable anti-corrosion and tribological properties.
Originality/value
This paper provides an effective approach to improve the anti-corrosion and tribological properties of ILs for actual applications.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-11-2019-0469/
Keywords
Acknowledgements
This study is supported by the Beijing Municipal Natural Science Foundation (Grant 2172053) and the National Natural Science Foundation of China (Grant 51575181).
Citation
Cao, Z., Xia, Y., Chen, C., Zheng, K. and Zhang, Y. (2020), "Polyaniline as an additive towards improving tribological properties and anti-corrosion performance of ionic liquids-based greases", Industrial Lubrication and Tribology, Vol. 72 No. 7, pp. 851-856. https://doi.org/10.1108/ILT-11-2019-0469
Publisher
:Emerald Publishing Limited
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