Effects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases

This paper describes the influence of fiber length of lithium-soap thickener of greases on friction under boundary lubrication conditions. Ball-on-disk sliding tests were conducted with lithium soap greases with polyol ester as the base oil. The tests revealed that the greases had a lower friction...

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Autores principales:	Atsushi Yokouchi, Michita Hokao, Joichi Sugimura
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2011
Materias:	grease thickener fiber friction boundary lubrication 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/c58bb0b89b15473094bc4008884ff8e3
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id	oai:doaj.org-article:c58bb0b89b15473094bc4008884ff8e3
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spelling	oai:doaj.org-article:c58bb0b89b15473094bc4008884ff8e32021-11-05T09:25:55ZEffects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases1881-219810.2474/trol.6.219https://doaj.org/article/c58bb0b89b15473094bc4008884ff8e32011-03-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/6/4/6_4_219/_pdf/-char/enhttps://doaj.org/toc/1881-2198This paper describes the influence of fiber length of lithium-soap thickener of greases on friction under boundary lubrication conditions. Ball-on-disk sliding tests were conducted with lithium soap greases with polyol ester as the base oil. The tests revealed that the greases had a lower friction coefficient than that for the base oil. The grease with a long soap fiber structure had a lower friction coefficient than that for the grease with a short soap fiber structure. The tests with only soap fibers showed that the soap fibers had better lubricity than the base oil under the boundary conditions tested, but there was little difference in the lubricity of the longer fibers and the shorter fibers. The partial coat tests revealed that the grease with longer soap fibers was easily entrained into the contact. It was concluded that this entrainment capability of the grease led to favorable lubrication to maintain low friction coefficient.Atsushi YokouchiMichita HokaoJoichi SugimuraJapanese Society of Tribologistsarticlegreasethickenerfiberfrictionboundary lubricationPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 6, Iss 4, Pp 219-225 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	grease thickener fiber friction boundary lubrication Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	grease thickener fiber friction boundary lubrication Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Atsushi Yokouchi Michita Hokao Joichi Sugimura Effects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases
description	This paper describes the influence of fiber length of lithium-soap thickener of greases on friction under boundary lubrication conditions. Ball-on-disk sliding tests were conducted with lithium soap greases with polyol ester as the base oil. The tests revealed that the greases had a lower friction coefficient than that for the base oil. The grease with a long soap fiber structure had a lower friction coefficient than that for the grease with a short soap fiber structure. The tests with only soap fibers showed that the soap fibers had better lubricity than the base oil under the boundary conditions tested, but there was little difference in the lubricity of the longer fibers and the shorter fibers. The partial coat tests revealed that the grease with longer soap fibers was easily entrained into the contact. It was concluded that this entrainment capability of the grease led to favorable lubrication to maintain low friction coefficient.
format	article
author	Atsushi Yokouchi Michita Hokao Joichi Sugimura
author_facet	Atsushi Yokouchi Michita Hokao Joichi Sugimura
author_sort	Atsushi Yokouchi
title	Effects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases
title_short	Effects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases
title_full	Effects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases
title_fullStr	Effects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases
title_full_unstemmed	Effects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases
title_sort	effects of soap fiber structure on boundary lubrication of lithium soap greases
publisher	Japanese Society of Tribologists
publishDate	2011
url	https://doaj.org/article/c58bb0b89b15473094bc4008884ff8e3
work_keys_str_mv	AT atsushiyokouchi effectsofsoapfiberstructureonboundarylubricationoflithiumsoapgreases AT michitahokao effectsofsoapfiberstructureonboundarylubricationoflithiumsoapgreases AT joichisugimura effectsofsoapfiberstructureonboundarylubricationoflithiumsoapgreases
_version_	1718444375513497600

Effects of Soap Fiber Structure on Boundary Lubrication of Lithium Soap Greases

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