Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface

Based on the demand of extremely increased area density for magnetic data storage, the contact recording systems have been proposed, in which stronger and thinner hard coatings and lubricant films for the head disk interface (HDI) are desired. In this study, two lubrication methods, i.e., the vacuum...

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Autores principales:	Masahiro Kawaguchi, Saiko Aoki, Atsushi Mitsuo, Junho Choi, Takahisa Kato
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2008
Materias:	diamond-like carbon (dlc) perfluoropolyether (pfpe) arrhenius equation vacuum vapor deposition dip-coating 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/f6b7c705f9cb422fb8a350e0584c5360
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spelling	oai:doaj.org-article:f6b7c705f9cb422fb8a350e0584c53602021-11-05T09:28:53ZEffect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface1881-219810.2474/trol.3.259https://doaj.org/article/f6b7c705f9cb422fb8a350e0584c53602008-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/3/5/3_5_259/_pdf/-char/enhttps://doaj.org/toc/1881-2198Based on the demand of extremely increased area density for magnetic data storage, the contact recording systems have been proposed, in which stronger and thinner hard coatings and lubricant films for the head disk interface (HDI) are desired. In this study, two lubrication methods, i.e., the vacuum vapor deposition and dip-coating methods are evaluated and compared in order to satisfy the demands from the HDI development. Perfluoropolyether (PFPE) is applied to the diamond-like carbon (DLC) surface. The advantage of the vacuum vapor deposition is to prevent contamination of the DLC surface from the atmosphere because of no exposed samples to the atmosphere. In contrast, the advantage of dip-coating method is to thicken the bonded layer of the PFPE by heat treatment. We discuss the adsorption mechanism between the PFPE molecules and DLC surface for each method. In addition, a simple reaction model based on the Arrhenius equation is developed and compared to the experimental results. We concluded that the reaction will be dominated by covalent bonds and hydrogen bonding. Furthermore, the reaction model can well express the experimental results. The remarkable destruction of the DLC film by the heat treatment are not seen in the samples heat treated at a temperature from 353 to 423 K while the remarkable destruction are seen in the samples treated from 423 to 473 K.Masahiro KawaguchiSaiko AokiAtsushi MitsuoJunho ChoiTakahisa KatoJapanese Society of Tribologistsarticlediamond-like carbon (dlc)perfluoropolyether (pfpe)arrhenius equationvacuum vapor depositiondip-coatingPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 3, Iss 5, Pp 259-263 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	diamond-like carbon (dlc) perfluoropolyether (pfpe) arrhenius equation vacuum vapor deposition dip-coating Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	diamond-like carbon (dlc) perfluoropolyether (pfpe) arrhenius equation vacuum vapor deposition dip-coating Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Masahiro Kawaguchi Saiko Aoki Atsushi Mitsuo Junho Choi Takahisa Kato Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface
description	Based on the demand of extremely increased area density for magnetic data storage, the contact recording systems have been proposed, in which stronger and thinner hard coatings and lubricant films for the head disk interface (HDI) are desired. In this study, two lubrication methods, i.e., the vacuum vapor deposition and dip-coating methods are evaluated and compared in order to satisfy the demands from the HDI development. Perfluoropolyether (PFPE) is applied to the diamond-like carbon (DLC) surface. The advantage of the vacuum vapor deposition is to prevent contamination of the DLC surface from the atmosphere because of no exposed samples to the atmosphere. In contrast, the advantage of dip-coating method is to thicken the bonded layer of the PFPE by heat treatment. We discuss the adsorption mechanism between the PFPE molecules and DLC surface for each method. In addition, a simple reaction model based on the Arrhenius equation is developed and compared to the experimental results. We concluded that the reaction will be dominated by covalent bonds and hydrogen bonding. Furthermore, the reaction model can well express the experimental results. The remarkable destruction of the DLC film by the heat treatment are not seen in the samples heat treated at a temperature from 353 to 423 K while the remarkable destruction are seen in the samples treated from 423 to 473 K.
format	article
author	Masahiro Kawaguchi Saiko Aoki Atsushi Mitsuo Junho Choi Takahisa Kato
author_facet	Masahiro Kawaguchi Saiko Aoki Atsushi Mitsuo Junho Choi Takahisa Kato
author_sort	Masahiro Kawaguchi
title	Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface
title_short	Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface
title_full	Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface
title_fullStr	Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface
title_full_unstemmed	Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface
title_sort	effect of heat treatment temperature on pfpe molecules bonded on dlc surface
publisher	Japanese Society of Tribologists
publishDate	2008
url	https://doaj.org/article/f6b7c705f9cb422fb8a350e0584c5360
work_keys_str_mv	AT masahirokawaguchi effectofheattreatmenttemperatureonpfpemoleculesbondedondlcsurface AT saikoaoki effectofheattreatmenttemperatureonpfpemoleculesbondedondlcsurface AT atsushimitsuo effectofheattreatmenttemperatureonpfpemoleculesbondedondlcsurface AT junhochoi effectofheattreatmenttemperatureonpfpemoleculesbondedondlcsurface AT takahisakato effectofheattreatmenttemperatureonpfpemoleculesbondedondlcsurface
_version_	1718444386079997952

Effect of Heat Treatment Temperature on PFPE Molecules Bonded on DLC Surface

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