Adhesion and Friction Behaviors of Probes Approaching Magnetic Disk Surfaces

In this study, we focused on the adhesion and friction behaviors of probes approaching magnetic disk surfaces. In order to observe these behaviors, a micro-tribotester was newly developed to evaluate the friction and adhesion forces of the ultrathin lubricant film on magnetic disks. The contact area...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2012-11, Vol.48 (11), p.4483-4486
Main Authors: Tani, Hiroshi, Mitsutome, Toshiya, Tsujiguchi, Yusuke, Kanda, Masayuki, Tagawa, Norio
Format: Article
Language:English
Subjects:
Adhesives
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Force
Force measurement
Friction
Glass
Hard disk drive
head-disk interface
Lubricants
magnetic disk
Magnetism
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Other topics in materials science
perfluoropolyether
Physics
pin-on-disk test
Probes
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Summary:In this study, we focused on the adhesion and friction behaviors of probes approaching magnetic disk surfaces. In order to observe these behaviors, a micro-tribotester was newly developed to evaluate the friction and adhesion forces of the ultrathin lubricant film on magnetic disks. The contact area between the spherical glass surface and the disk surface was measured using light intensities and Newton's rings and approximated by the JKR model. An adhesion force corresponding to a pull-off force acted on the interface between the glass surface and the disk surface. The friction coefficients on disks with different lubricant thicknesses were measured and the coefficient was found to decrease as the lubricant thickness increased. The pull-off force gradually increased as lubricant thickness increased.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2012.2197594