Study of soybean lecithin as multifunctional lubricating additives
Abstract
Purpose
The purpose of this paper is to study the antirust, tribological performance and anti-wear (AW) mechanism of the of soybean lecithin (SL) as a kind of multifunctional lubricant additive.
Design/methodology/approach
As a kind of multifunctional lubricant additive, the antirust performance of SL was tested according to ASTM D 665, and meanwhile, its tribological performances were also evaluated by Optimol SRV-I oscillating reciprocating friction and wear tester and four ball tester. The worn steel surfaces were investigated by scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS).
Findings
The results showed that the SL exhibited excellent antirust properties in different base stock, and could effectively improve the AW and extreme pressure (EP) performances. The results of SEM and XPS indicated that a protective film was formed between steel-steel friction pair during the tribological test.
Originality/value
This paper first investigated the antirust properties and the tribological mechanism of the SL as a kind of multifunctional lubricant additive, which can be very useful and will promote the application of SL in lubricant industry.
Keywords
Acknowledgements
This work was financially supported by “973” program (2011CB706600).
Citation
Li, W., Wu, Y., Wang, X. and Liu, W. (2013), "Study of soybean lecithin as multifunctional lubricating additives", Industrial Lubrication and Tribology, Vol. 65 No. 6, pp. 466-471. https://doi.org/10.1108/ILT-06-2011-0050
Publisher
:Emerald Group Publishing Limited
Copyright © 2013, Emerald Group Publishing Limited