Effect of Organic Acid on Friction and Wear Properties of DLC Coating

Diamond-like carbon (DLC) coating provides low friction properties without lubricants and, with lubricants, should provide super low friction. In this study, to find the possibility of the environment-friendly material combination that can provide super low friction (with a coefficient of friction l...

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Autores principales:	Kentaro Yoshida, Takahiro Horiuchi, Makoto Kano, Masao Kumagai
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2008
Materias:	dlc coating organic acid friction oxidation tribofilm 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/5618a68d75744b65905b4cade2b78891
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id	oai:doaj.org-article:5618a68d75744b65905b4cade2b78891
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spelling	oai:doaj.org-article:5618a68d75744b65905b4cade2b788912021-11-05T09:29:08ZEffect of Organic Acid on Friction and Wear Properties of DLC Coating1881-219810.2474/trol.3.200https://doaj.org/article/5618a68d75744b65905b4cade2b788912008-06-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/3/3/3_3_200/_pdf/-char/enhttps://doaj.org/toc/1881-2198Diamond-like carbon (DLC) coating provides low friction properties without lubricants and, with lubricants, should provide super low friction. In this study, to find the possibility of the environment-friendly material combination that can provide super low friction (with a coefficient of friction lower than 0.01), the friction and wear properties of DLC coating with lubrication in sliding contact areas were evaluated. The friction and wear properties of the steel pin on DLC coated disk with lubrication were evaluated by using environment-friendly fluids (organic acid or alcohol) as lubricants. In the sliding test of tetrahedral amorphous carbon (ta-C) lubricated with DL(mixture of dextrorotatory and levorotatory molecules)-lactic acid, the super low friction coefficient, 0.01 was obtained at the end of the test, and was much lower than that of the uncoated disk and the a-C:H disk. And the coefficient of friction using DL-lactic acid was lower than that of acetic acid or glycerol. Then, the oxidation film (white layer) of FeO on the pin was formed under DL-lactic acid lubrication at the sliding surface of the pin. This showed that the condition of the steel pin also influenced the coefficient of friction. The main reason of reducing friction was thought that the carboxyl and hydroxyl groups in DL-lactic acid connected strongly with the dangling bond on the surface of the ta-C.Kentaro YoshidaTakahiro HoriuchiMakoto KanoMasao KumagaiJapanese Society of Tribologistsarticledlc coatingorganic acidfrictionoxidationtribofilmPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 3, Iss 3, Pp 200-204 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	dlc coating organic acid friction oxidation tribofilm Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	dlc coating organic acid friction oxidation tribofilm Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Kentaro Yoshida Takahiro Horiuchi Makoto Kano Masao Kumagai Effect of Organic Acid on Friction and Wear Properties of DLC Coating
description	Diamond-like carbon (DLC) coating provides low friction properties without lubricants and, with lubricants, should provide super low friction. In this study, to find the possibility of the environment-friendly material combination that can provide super low friction (with a coefficient of friction lower than 0.01), the friction and wear properties of DLC coating with lubrication in sliding contact areas were evaluated. The friction and wear properties of the steel pin on DLC coated disk with lubrication were evaluated by using environment-friendly fluids (organic acid or alcohol) as lubricants. In the sliding test of tetrahedral amorphous carbon (ta-C) lubricated with DL(mixture of dextrorotatory and levorotatory molecules)-lactic acid, the super low friction coefficient, 0.01 was obtained at the end of the test, and was much lower than that of the uncoated disk and the a-C:H disk. And the coefficient of friction using DL-lactic acid was lower than that of acetic acid or glycerol. Then, the oxidation film (white layer) of FeO on the pin was formed under DL-lactic acid lubrication at the sliding surface of the pin. This showed that the condition of the steel pin also influenced the coefficient of friction. The main reason of reducing friction was thought that the carboxyl and hydroxyl groups in DL-lactic acid connected strongly with the dangling bond on the surface of the ta-C.
format	article
author	Kentaro Yoshida Takahiro Horiuchi Makoto Kano Masao Kumagai
author_facet	Kentaro Yoshida Takahiro Horiuchi Makoto Kano Masao Kumagai
author_sort	Kentaro Yoshida
title	Effect of Organic Acid on Friction and Wear Properties of DLC Coating
title_short	Effect of Organic Acid on Friction and Wear Properties of DLC Coating
title_full	Effect of Organic Acid on Friction and Wear Properties of DLC Coating
title_fullStr	Effect of Organic Acid on Friction and Wear Properties of DLC Coating
title_full_unstemmed	Effect of Organic Acid on Friction and Wear Properties of DLC Coating
title_sort	effect of organic acid on friction and wear properties of dlc coating
publisher	Japanese Society of Tribologists
publishDate	2008
url	https://doaj.org/article/5618a68d75744b65905b4cade2b78891
work_keys_str_mv	AT kentaroyoshida effectoforganicacidonfrictionandwearpropertiesofdlccoating AT takahirohoriuchi effectoforganicacidonfrictionandwearpropertiesofdlccoating AT makotokano effectoforganicacidonfrictionandwearpropertiesofdlccoating AT masaokumagai effectoforganicacidonfrictionandwearpropertiesofdlccoating
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Effect of Organic Acid on Friction and Wear Properties of DLC Coating

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