Tribological Properties of Cyano-Based Ionic Liquids under Different Environments

Ionic liquids have been used as novel high-performance lubricants. However, fluorine-based ionic liquids cause corrosion of materials by the formation of FeF2 and FeF3. This study focuses on cyano-based ionic liquids, as they have low corrosion tendencies owing to the absence of fluorine in their st...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Shouhei Kawada, Shinya Sasaki
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2018
Materias:	ionic liquid vacuum sem-eds tof-sims 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/4f68d824685a49908cb934d72a76c1e7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4f68d824685a49908cb934d72a76c1e7
record_format	dspace
spelling	oai:doaj.org-article:4f68d824685a49908cb934d72a76c1e72021-11-05T09:19:16ZTribological Properties of Cyano-Based Ionic Liquids under Different Environments1881-219810.2474/trol.13.152https://doaj.org/article/4f68d824685a49908cb934d72a76c1e72018-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/13/3/13_152/_pdf/-char/enhttps://doaj.org/toc/1881-2198Ionic liquids have been used as novel high-performance lubricants. However, fluorine-based ionic liquids cause corrosion of materials by the formation of FeF2 and FeF3. This study focuses on cyano-based ionic liquids, as they have low corrosion tendencies owing to the absence of fluorine in their structures. However, cyano-based ionic liquids are hydrophilic, and hence, the effect of ambient conditions (e.g., atmospheric moisture) on the tribological properties needs to be investigated. This study reports the tribological properties of two types of cyano-based ionic liquids 1-ethyl-3-methylimidazolium dicyanamide and 1-ethyl-3-methylimidazolium tricyanomethane under air, vacuum, and dry air environments. Their friction coefficients were found to be dependent on the ambient condition. Both the ionic liquids exhibited low friction coefficients in vacuum. The time-of-flight secondary ion mass spectrometry results indicated that the anion was adsorbed on the worn surface under vacuum conditions, and the adsorbed anion exhibited a low friction. In dry air, the cation was adsorbed on the worn surface, and the adsorbed cation exhibited a higher friction coefficient than the adsorbed anion. In air, the cyano-based ionic liquids caused corrosion of the sliding material and exhibited a high friction coefficient, because of the absorption of moisture from air.Shouhei KawadaShinya SasakiJapanese Society of Tribologistsarticleionic liquidvacuumsem-edstof-simsPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 13, Iss 3, Pp 152-156 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	ionic liquid vacuum sem-eds tof-sims Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	ionic liquid vacuum sem-eds tof-sims Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Shouhei Kawada Shinya Sasaki Tribological Properties of Cyano-Based Ionic Liquids under Different Environments
description	Ionic liquids have been used as novel high-performance lubricants. However, fluorine-based ionic liquids cause corrosion of materials by the formation of FeF2 and FeF3. This study focuses on cyano-based ionic liquids, as they have low corrosion tendencies owing to the absence of fluorine in their structures. However, cyano-based ionic liquids are hydrophilic, and hence, the effect of ambient conditions (e.g., atmospheric moisture) on the tribological properties needs to be investigated. This study reports the tribological properties of two types of cyano-based ionic liquids 1-ethyl-3-methylimidazolium dicyanamide and 1-ethyl-3-methylimidazolium tricyanomethane under air, vacuum, and dry air environments. Their friction coefficients were found to be dependent on the ambient condition. Both the ionic liquids exhibited low friction coefficients in vacuum. The time-of-flight secondary ion mass spectrometry results indicated that the anion was adsorbed on the worn surface under vacuum conditions, and the adsorbed anion exhibited a low friction. In dry air, the cation was adsorbed on the worn surface, and the adsorbed cation exhibited a higher friction coefficient than the adsorbed anion. In air, the cyano-based ionic liquids caused corrosion of the sliding material and exhibited a high friction coefficient, because of the absorption of moisture from air.
format	article
author	Shouhei Kawada Shinya Sasaki
author_facet	Shouhei Kawada Shinya Sasaki
author_sort	Shouhei Kawada
title	Tribological Properties of Cyano-Based Ionic Liquids under Different Environments
title_short	Tribological Properties of Cyano-Based Ionic Liquids under Different Environments
title_full	Tribological Properties of Cyano-Based Ionic Liquids under Different Environments
title_fullStr	Tribological Properties of Cyano-Based Ionic Liquids under Different Environments
title_full_unstemmed	Tribological Properties of Cyano-Based Ionic Liquids under Different Environments
title_sort	tribological properties of cyano-based ionic liquids under different environments
publisher	Japanese Society of Tribologists
publishDate	2018
url	https://doaj.org/article/4f68d824685a49908cb934d72a76c1e7
work_keys_str_mv	AT shouheikawada tribologicalpropertiesofcyanobasedionicliquidsunderdifferentenvironments AT shinyasasaki tribologicalpropertiesofcyanobasedionicliquidsunderdifferentenvironments
_version_	1718444408757551104

Tribological Properties of Cyano-Based Ionic Liquids under Different Environments

Ejemplares similares