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Tribological Investigation of Guanidinium Ionic Liquids as Lubricants for Steel/Bronze Contacts

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Abstract:

Two kinds of guanidinium ionic liquids were synthesized. The thermal stabilities of the ionic liquids were evaluated by a hermogravimetric analyzer. Their tribological properties were investigated and compared with alkyl imidazole ionic liquids and liquid paraffin by SRV friction-wear test. The images of worn surfaces were observed under scanning electron microscope. X-ray photoelectron spectrometer analysis was carried out to explore the lubrication mechanism. The results showed that guanidinium ionic liquids were the best lubricants among the tested lubricants for steel/bronze contacts. Complex tribochemical reactions occurred during the sliding process and boundary lubrication films formed on the bronze/steel friction pair interface.

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Periodical:

Materials Science Forum (Volume 852)

Pages:

1046-1049

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.852.1046

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Online since:

April 2016

Authors:

Gui Qin Yu*, Kuo Yang, Jian Jun Liu, Yong Min Liang

Keywords:

Bronze Contacts, Guanidinium Ionic Liquids, Steel Contacts, Tribological Properties

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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