Investigation of tribological behavior of Al-Si alloy against steel lubricated with ionic liquids of 1-diethylphosphony1-n-propyi-3-alkylimidazolium tetrafluoroborate

Zonggang Mu, Xiaoxuan Wang, Shuxiang Zhang, Yongmin Liang, Meng Bao, Weimin Liu

科研成果: 期刊稿件文章同行评审

28 引用 (Scopus)

摘要

A series of room temperature ionic liquids bearing with phosphonyl groups on the imidazolium cations, namely, 1-(3′-O, O-diethylphosphonyl-n-propyl)-3-alkylimidazolium tetrafluoroborate, were prepared and their physical properties were determined. They were also evaluated as promising lubricants for the contacts of aluminum on steel by using a SRV test rig. The tribological test results show that the synthetic ionic liquids exhibit better friction-reducing and antiwear abilities than the unsubstituted ionic liquid of 1-ethyl-3-hexylimidazolium tetrafluoroborate (coded as L206) and phosphazene (X-1P). Both the anions and the side substitutes attached to the imidazolium cations affect the tribological performance of lubricants. The scanning electron microscopy, energy-dispersive x-ray analysis, and x-ray photoelectron spectroscopy analyses of the worn surfaces show that complicated tribochemical reactions are involved in the sliding process. The anion decomposition and chemical adsorption of cation took place on the worn surface of aluminum alloy during the sliding process. As a result of the generation of boundary lubrication films which are composed of metal fluorides, B2O3, BN, nitrogen oxide, and FePO4 help to effectively reduce the friction and wear of the contacts.

源语言英语
文章编号034501
期刊Journal of Tribology
130
3
DOI
出版状态已出版 - 7月 2008
已对外发布

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