An effect of dewetting of lubricated surfaces on friction and wear properties

Masahiro Kawaguchi, Kazuyuki Yagi, Takahisa Kato

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

To meet the demand of increased storage density for magnetic data storage, stronger and thinner lubricant films for head disk interface in hard disk drives is desired. It is reported that perfluoropolyether lubricant with polar end groups is dewetted and brings about the flying instability of a magnetic head. In this report the effects of dewetting phenomenon on friction and wear properties are studied. Observations of lubricant film by optical microscopy and friction tests were carried out. The observation showed the lubricated surface became dewetted with time and lubricant droplets were formed. The dewetted area increased with time as shown in the figure and, at the same time, the number of droplets decreased. These results suggest the growth of droplets. From the results of friction tests, it was found that the friction coefficient increased and the lifetime reduced with the growth of droplets. The reason for this will be discussed in this research.

Original languageEnglish
Article number10P311
JournalJournal of Applied Physics
Volume97
Issue number10
DOIs
Publication statusPublished - May 15 2005
Externally publishedYes

Fingerprint

lubricants
drying
friction
data storage
coefficient of friction
flight
microscopy
life (durability)

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

An effect of dewetting of lubricated surfaces on friction and wear properties. / Kawaguchi, Masahiro; Yagi, Kazuyuki; Kato, Takahisa.

In: Journal of Applied Physics, Vol. 97, No. 10, 10P311, 15.05.2005.

Research output: Contribution to journalArticle

@article{22dce307374f42688ccf44872c4f4d4c,
title = "An effect of dewetting of lubricated surfaces on friction and wear properties",
abstract = "To meet the demand of increased storage density for magnetic data storage, stronger and thinner lubricant films for head disk interface in hard disk drives is desired. It is reported that perfluoropolyether lubricant with polar end groups is dewetted and brings about the flying instability of a magnetic head. In this report the effects of dewetting phenomenon on friction and wear properties are studied. Observations of lubricant film by optical microscopy and friction tests were carried out. The observation showed the lubricated surface became dewetted with time and lubricant droplets were formed. The dewetted area increased with time as shown in the figure and, at the same time, the number of droplets decreased. These results suggest the growth of droplets. From the results of friction tests, it was found that the friction coefficient increased and the lifetime reduced with the growth of droplets. The reason for this will be discussed in this research.",
author = "Masahiro Kawaguchi and Kazuyuki Yagi and Takahisa Kato",
year = "2005",
month = "5",
day = "15",
doi = "10.1063/1.1862932",
language = "English",
volume = "97",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "10",

}

TY - JOUR

T1 - An effect of dewetting of lubricated surfaces on friction and wear properties

AU - Kawaguchi, Masahiro

AU - Yagi, Kazuyuki

AU - Kato, Takahisa

PY - 2005/5/15

Y1 - 2005/5/15

N2 - To meet the demand of increased storage density for magnetic data storage, stronger and thinner lubricant films for head disk interface in hard disk drives is desired. It is reported that perfluoropolyether lubricant with polar end groups is dewetted and brings about the flying instability of a magnetic head. In this report the effects of dewetting phenomenon on friction and wear properties are studied. Observations of lubricant film by optical microscopy and friction tests were carried out. The observation showed the lubricated surface became dewetted with time and lubricant droplets were formed. The dewetted area increased with time as shown in the figure and, at the same time, the number of droplets decreased. These results suggest the growth of droplets. From the results of friction tests, it was found that the friction coefficient increased and the lifetime reduced with the growth of droplets. The reason for this will be discussed in this research.

AB - To meet the demand of increased storage density for magnetic data storage, stronger and thinner lubricant films for head disk interface in hard disk drives is desired. It is reported that perfluoropolyether lubricant with polar end groups is dewetted and brings about the flying instability of a magnetic head. In this report the effects of dewetting phenomenon on friction and wear properties are studied. Observations of lubricant film by optical microscopy and friction tests were carried out. The observation showed the lubricated surface became dewetted with time and lubricant droplets were formed. The dewetted area increased with time as shown in the figure and, at the same time, the number of droplets decreased. These results suggest the growth of droplets. From the results of friction tests, it was found that the friction coefficient increased and the lifetime reduced with the growth of droplets. The reason for this will be discussed in this research.

UR - http://www.scopus.com/inward/record.url?scp=20944431550&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=20944431550&partnerID=8YFLogxK

U2 - 10.1063/1.1862932

DO - 10.1063/1.1862932

M3 - Article

AN - SCOPUS:20944431550

VL - 97

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 10

M1 - 10P311

ER -