Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment

Plasma jet sterilization of cutting fluid was performed under atmospheric pressure, and the tribological properties of the resulting fluid were investigated. The mechanisms of atmospheric-pressure plasma jet sterilization were also clarified. The number of bacterial colonies in the sterilized fluid...

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Autores principales:	Junji Miyamoto, Masayuki Kodama, Shouhei Kawada, Ryo Tsuboi
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2018
Materias:	plasma sterilizing cutting fluids plasma jet tribological properties 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/1f48f1c9592a4db883514e1fd934f7b4
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spelling	oai:doaj.org-article:1f48f1c9592a4db883514e1fd934f7b42021-11-05T09:19:00ZTribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment1881-219810.2474/trol.13.248https://doaj.org/article/1f48f1c9592a4db883514e1fd934f7b42018-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/13/5/13_248/_pdf/-char/enhttps://doaj.org/toc/1881-2198Plasma jet sterilization of cutting fluid was performed under atmospheric pressure, and the tribological properties of the resulting fluid were investigated. The mechanisms of atmospheric-pressure plasma jet sterilization were also clarified. The number of bacterial colonies in the sterilized fluid was reduced by more than 90% compared with the untreated fluid. After exposure to ultraviolet light, no comparable reduction was observed. We concluded that the sterilization observed in the study was caused by the reaction of excited N2, N, and Ar. The IR spectra of the plasma-treated cutting fluid were the same as those of the untreated fluid. However, the transmittance of the C=O peak decreased in proportion to the discharge voltage. The treated cutting fluids maintained a low friction coefficient 2.4 times longer than the untreated fluid. The sliding angle and adhesive energy of the untreated cutting fluid were considerably lower than those of the unused cutting fluid. Furthermore, the sliding angle and adhesive energy of the plasma-treated cutting fluid were higher than those of the untreated cutting fluid. Therefore, we consider that the lower friction coefficient of plasma-treated cutting fluid as compared to that of the untreated cutting fluid is related to this result. The study demonstrated that the life of a cutting fluid can be prolonged by this novel plasma treatment, with an associated improvement in tribological properties.Junji MiyamotoMasayuki KodamaShouhei KawadaRyo TsuboiJapanese Society of Tribologistsarticleplasma sterilizingcutting fluidsplasma jettribological propertiesPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 13, Iss 5, Pp 248-253 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	plasma sterilizing cutting fluids plasma jet tribological properties Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	plasma sterilizing cutting fluids plasma jet tribological properties Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Junji Miyamoto Masayuki Kodama Shouhei Kawada Ryo Tsuboi Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment
description	Plasma jet sterilization of cutting fluid was performed under atmospheric pressure, and the tribological properties of the resulting fluid were investigated. The mechanisms of atmospheric-pressure plasma jet sterilization were also clarified. The number of bacterial colonies in the sterilized fluid was reduced by more than 90% compared with the untreated fluid. After exposure to ultraviolet light, no comparable reduction was observed. We concluded that the sterilization observed in the study was caused by the reaction of excited N2, N, and Ar. The IR spectra of the plasma-treated cutting fluid were the same as those of the untreated fluid. However, the transmittance of the C=O peak decreased in proportion to the discharge voltage. The treated cutting fluids maintained a low friction coefficient 2.4 times longer than the untreated fluid. The sliding angle and adhesive energy of the untreated cutting fluid were considerably lower than those of the unused cutting fluid. Furthermore, the sliding angle and adhesive energy of the plasma-treated cutting fluid were higher than those of the untreated cutting fluid. Therefore, we consider that the lower friction coefficient of plasma-treated cutting fluid as compared to that of the untreated cutting fluid is related to this result. The study demonstrated that the life of a cutting fluid can be prolonged by this novel plasma treatment, with an associated improvement in tribological properties.
format	article
author	Junji Miyamoto Masayuki Kodama Shouhei Kawada Ryo Tsuboi
author_facet	Junji Miyamoto Masayuki Kodama Shouhei Kawada Ryo Tsuboi
author_sort	Junji Miyamoto
title	Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment
title_short	Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment
title_full	Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment
title_fullStr	Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment
title_full_unstemmed	Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment
title_sort	tribological properties of cutting fluid sterilized by atmospheric-pressure plasma treatment
publisher	Japanese Society of Tribologists
publishDate	2018
url	https://doaj.org/article/1f48f1c9592a4db883514e1fd934f7b4
work_keys_str_mv	AT junjimiyamoto tribologicalpropertiesofcuttingfluidsterilizedbyatmosphericpressureplasmatreatment AT masayukikodama tribologicalpropertiesofcuttingfluidsterilizedbyatmosphericpressureplasmatreatment AT shouheikawada tribologicalpropertiesofcuttingfluidsterilizedbyatmosphericpressureplasmatreatment AT ryotsuboi tribologicalpropertiesofcuttingfluidsterilizedbyatmosphericpressureplasmatreatment
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Tribological Properties of Cutting Fluid Sterilized by Atmospheric-Pressure Plasma Treatment

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