Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid

Ionic liquids (ILs) are being considered as novel lubricant additives to improve the friction and anti-wear characteristics of sliding surfaces. Because ILs consist of only cations and anions, their physical and chemical properties can be easily tailored by modifying their combination. These feature...

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Autores principales:	Kaisei Sato, Hikaru Okubo, Shouhei Kawada, Seiya Watanabe, Shinya Sasaki
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2021
Materias:	ionic liquid zinc dialkyldithiophosphate lubricant additive tribofilm surface analysis Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/4ca9ea0eba414b86b49f8c1b3bb5dbcf
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spelling	oai:doaj.org-article:4ca9ea0eba414b86b49f8c1b3bb5dbcf2021-11-05T09:31:10ZSynergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid1881-219810.2474/trol.16.178https://doaj.org/article/4ca9ea0eba414b86b49f8c1b3bb5dbcf2021-09-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/16/3/16_178/_pdf/-char/enhttps://doaj.org/toc/1881-2198Ionic liquids (ILs) are being considered as novel lubricant additives to improve the friction and anti-wear characteristics of sliding surfaces. Because ILs consist of only cations and anions, their physical and chemical properties can be easily tailored by modifying their combination. These features enable to design of specific ILs for a given tribological system. However, there are few reports on the effect of ILs used as lubricant additives on the friction and anti-wear characteristics of sliding surfaces. Moreover, it is necessary to investigate the synergism between ILs and other lubricant additives to achieve high practical efficiency. Therefore, in this study, two ILs with different cations but similar anions were used in combination with an anti-wear additive, zinc dialkyldithiophosphate (ZDDP), and the resultant wear and friction characteristics of the worn surfaces were analyzed. We found that the tribological performance under steel/steel sliding conditions was dependent on the chemical composition of the ILs. In addition, mixed ZDDP and IL solutions exhibited lower friction and wear when compared to ZDDP alone. It is considered that the excellent lubrication and frictional performance observed with the mixed lubricant solutions is due to the formation of tribofilms comprising of ZDDP and IL on the sliding surface.Kaisei SatoHikaru OkuboShouhei KawadaSeiya WatanabeShinya SasakiJapanese Society of Tribologistsarticleionic liquidzinc dialkyldithiophosphatelubricant additivetribofilmsurface analysisPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 16, Iss 3, Pp 178-191 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ionic liquid zinc dialkyldithiophosphate lubricant additive tribofilm surface analysis Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	ionic liquid zinc dialkyldithiophosphate lubricant additive tribofilm surface analysis Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Kaisei Sato Hikaru Okubo Shouhei Kawada Seiya Watanabe Shinya Sasaki Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid
description	Ionic liquids (ILs) are being considered as novel lubricant additives to improve the friction and anti-wear characteristics of sliding surfaces. Because ILs consist of only cations and anions, their physical and chemical properties can be easily tailored by modifying their combination. These features enable to design of specific ILs for a given tribological system. However, there are few reports on the effect of ILs used as lubricant additives on the friction and anti-wear characteristics of sliding surfaces. Moreover, it is necessary to investigate the synergism between ILs and other lubricant additives to achieve high practical efficiency. Therefore, in this study, two ILs with different cations but similar anions were used in combination with an anti-wear additive, zinc dialkyldithiophosphate (ZDDP), and the resultant wear and friction characteristics of the worn surfaces were analyzed. We found that the tribological performance under steel/steel sliding conditions was dependent on the chemical composition of the ILs. In addition, mixed ZDDP and IL solutions exhibited lower friction and wear when compared to ZDDP alone. It is considered that the excellent lubrication and frictional performance observed with the mixed lubricant solutions is due to the formation of tribofilms comprising of ZDDP and IL on the sliding surface.
format	article
author	Kaisei Sato Hikaru Okubo Shouhei Kawada Seiya Watanabe Shinya Sasaki
author_facet	Kaisei Sato Hikaru Okubo Shouhei Kawada Seiya Watanabe Shinya Sasaki
author_sort	Kaisei Sato
title	Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid
title_short	Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid
title_full	Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid
title_fullStr	Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid
title_full_unstemmed	Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid
title_sort	synergistic enhancement of the lubrication performance of zinc dialkyldithiophosphate by coexistence with ionic liquid
publisher	Japanese Society of Tribologists
publishDate	2021
url	https://doaj.org/article/4ca9ea0eba414b86b49f8c1b3bb5dbcf
work_keys_str_mv	AT kaiseisato synergisticenhancementofthelubricationperformanceofzincdialkyldithiophosphatebycoexistencewithionicliquid AT hikaruokubo synergisticenhancementofthelubricationperformanceofzincdialkyldithiophosphatebycoexistencewithionicliquid AT shouheikawada synergisticenhancementofthelubricationperformanceofzincdialkyldithiophosphatebycoexistencewithionicliquid AT seiyawatanabe synergisticenhancementofthelubricationperformanceofzincdialkyldithiophosphatebycoexistencewithionicliquid AT shinyasasaki synergisticenhancementofthelubricationperformanceofzincdialkyldithiophosphatebycoexistencewithionicliquid
_version_	1718444286797676544

Synergistic Enhancement of the Lubrication Performance of Zinc Dialkyldithiophosphate by Coexistence with Ionic Liquid

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