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TECHNICAL PAPERS

Possibility of Organic Monolayer Films as Lubricants for Disk Drives: Comparative Study of PFPE and Organosilane

[+] Author and Article Information
Junho Choi, Takahisa Kato

Institute of Mechanical Systems Engineering, National Institute of Advanced Industrial Science and Technology (AIST), Namiki 1-2-1, Tsukuba, Ibaraki 305-8564, Japan

Masahiro Kawaguchi

Department of Material Engineering, Nagaoka University of Technology, 1603-1 Kamitomiokacho, Nagaoka, Niigata 940-2188, Japan

J. Tribol 125(4), 850-853 (Sep 25, 2003) (4 pages) doi:10.1115/1.1573230 History: Received July 18, 2002; Revised December 11, 2002; Online September 25, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic diagram of the ball-on-flat tribotester (top) and the top view of disk sample on the tribotester (bottom)
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Schematic illustration for the formation of the organosilane monolayer on the carbon surface
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Water contact angle and film thickness of organosilane coated disk surfaces as a function of immersion time
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Friction coefficient of unlubricated, PFPE coated, and organosilane monolayer coated disk surfaces. The sliding time was 600 sec. The PFPE lubricant films have immobile and mobile portion, and the bonded ratios are shown Table 1.
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Friction coefficient of unlubricated, immobile PFPE coated, and organosilane monolayer coated disk surfaces. The sliding time was 600 sec.
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Schematic illustration for the formation of the organosilane monolayer on an amorphous carbon surface
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Raw data of drag tests on (a) unlubed, P1.1, and P2.2, (b) PI1.0, and (c) OSM

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