Effects of functional end-group on nano-tribology characteristics of ultra-thin liquid lubricant films in hard disk drives

Author

Tagawa, Norio ; Mori, Atsunobu

Author_Institution

Dept. of Mech. Eng., Kansai Univ., Osaka, Japan

fYear

2004

fDate

16-19 Aug. 2004

Abstract

This paper describes the effects of functional end-group on nano-tribology characteristics of ultra-thin liquid lubricant films in hard disk drives. In the experiments, the spreading characteristics of ultra-thin liquid lubricant films have been investigated by using the disks with two kinds of lubricants which have different end-groups. The effect of molecularly thin lubricant films on nano-spacing flying head slider hysteresis behavior for touch-down and take-off process also has been studied. In addition, the behavior of two kinds of lubricants films for contact sliders has been investigated. Based on these experiments, it may be concluded that the functional end-group does affect the tribological performance of lubricants in head-disk interface.

Keywords

disc drives; hard discs; lubricants; magnetic heads; mechanical contact; nanotechnology; wetting; contact sliders; functional end-group effects; hard disk drives; head-disk interface; molecularly thin lubricant films; nanospacing flying head slider hysteresis behavior; nanotribology characteristics; spreading characteristics; take-off process; touch-down process; ultrathin liquid lubricant films; Hard disks; Lubricants; Magnetic films; Magnetic heads; Magnetic hysteresis; Magnetic recording; Mechanical engineering; Optical films; Substrates; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Asia-Pacific Magnetic Recording Conference, 2004. APMRC 2004

Print_ISBN

0-7803-8717-1

Type

conf

DOI

10.1109/APMRC.2004.1521929

Filename

1521929