Lubricant Spin-off and Oxidation Phenomenon on Hard Disk Media

High temperature (hot) and high humidity (wet) effects on perfluoropolyether lubricants, Z-dol and Z-tetraol, were investigated using the high speed spin-tester. The study has shown that: (1) higher humidity accelerates the lubricant spin-off on the disk surface, (2) in the case of Z-tetraol, oxidat...

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Autor principal:	Akinobu Wakabayashi
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2009
Materias:	hard disk perfluoropolyether z-dol z-tetraol spin-off hot-wet condition hot-dry condition humidity oxidation end-groups of z-tetraol 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/3b569bcc87ba4252a58cf5db7101d1e1
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spelling	oai:doaj.org-article:3b569bcc87ba4252a58cf5db7101d1e12021-11-05T09:28:08ZLubricant Spin-off and Oxidation Phenomenon on Hard Disk Media1881-219810.2474/trol.4.42https://doaj.org/article/3b569bcc87ba4252a58cf5db7101d1e12009-04-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/4/2/4_2_42/_pdf/-char/enhttps://doaj.org/toc/1881-2198High temperature (hot) and high humidity (wet) effects on perfluoropolyether lubricants, Z-dol and Z-tetraol, were investigated using the high speed spin-tester. The study has shown that: (1) higher humidity accelerates the lubricant spin-off on the disk surface, (2) in the case of Z-tetraol, oxidative reaction occurs under the hot-dry condition, but not under the hot-wet condition, (3) aforementioned phenomenon occurs only when the mobile fraction is present, and (4) the oxidation occurs the more strongly, the closer the location is to the spindle shaft. An NMR analysis of bulk materials heated in 150 oC revealed that the oxidative chemical changes are confined within the end-groups of Z-tetraol. No change was observed from bulk Z-dol heated similarly.Akinobu WakabayashiJapanese Society of Tribologistsarticlehard diskperfluoropolyetherz-dolz-tetraolspin-offhot-wet conditionhot-dry conditionhumidityoxidationend-groups of z-tetraolPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 4, Iss 2, Pp 42-45 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	hard disk perfluoropolyether z-dol z-tetraol spin-off hot-wet condition hot-dry condition humidity oxidation end-groups of z-tetraol Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	hard disk perfluoropolyether z-dol z-tetraol spin-off hot-wet condition hot-dry condition humidity oxidation end-groups of z-tetraol Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Akinobu Wakabayashi Lubricant Spin-off and Oxidation Phenomenon on Hard Disk Media
description	High temperature (hot) and high humidity (wet) effects on perfluoropolyether lubricants, Z-dol and Z-tetraol, were investigated using the high speed spin-tester. The study has shown that: (1) higher humidity accelerates the lubricant spin-off on the disk surface, (2) in the case of Z-tetraol, oxidative reaction occurs under the hot-dry condition, but not under the hot-wet condition, (3) aforementioned phenomenon occurs only when the mobile fraction is present, and (4) the oxidation occurs the more strongly, the closer the location is to the spindle shaft. An NMR analysis of bulk materials heated in 150 oC revealed that the oxidative chemical changes are confined within the end-groups of Z-tetraol. No change was observed from bulk Z-dol heated similarly.
format	article
author	Akinobu Wakabayashi
author_facet	Akinobu Wakabayashi
author_sort	Akinobu Wakabayashi
title	Lubricant Spin-off and Oxidation Phenomenon on Hard Disk Media
title_short	Lubricant Spin-off and Oxidation Phenomenon on Hard Disk Media
title_full	Lubricant Spin-off and Oxidation Phenomenon on Hard Disk Media
title_fullStr	Lubricant Spin-off and Oxidation Phenomenon on Hard Disk Media
title_full_unstemmed	Lubricant Spin-off and Oxidation Phenomenon on Hard Disk Media
title_sort	lubricant spin-off and oxidation phenomenon on hard disk media
publisher	Japanese Society of Tribologists
publishDate	2009
url	https://doaj.org/article/3b569bcc87ba4252a58cf5db7101d1e1
work_keys_str_mv	AT akinobuwakabayashi lubricantspinoffandoxidationphenomenononharddiskmedia
_version_	1718444342451896320

Lubricant Spin-off and Oxidation Phenomenon on Hard Disk Media

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