AFM observation of hard disk lubricant coated with plasma polymerized carbon

Author

Sakane, Yasuo ; Nakao, Masayuki

Author_Institution

Asahi-Komag Co. Ltd., Yamagata, Japan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

2394

Lastpage

2396

Abstract

By using the plasma-polymerized-carbon replication method in combination with an AFM scanning, surface morphology of liquid lubricant was clearly observed on laser bump´s surface of the hard disk coated with carbon overcoat. The carbon overcoat surface is covered with adsorbed lubricant uniformly. Clusters of liquid lubricant were also observed dispersively on the surface. After the contact-start-stop operations, accumulated lubricant was observed on the edge of laser textured bumps. The head surface was clean after the CSS test. It is suggested that the edge of bump rim has some head cleaning effect. Clusters of lubricant were also observed on worn areas. It means that clusters of lubricant were transferred to the head and then adhered again to the worn area

Keywords

atomic force microscopy; hard discs; lubrication; surface cleaning; surface texture; wear resistant coatings; AFM observation; adsorbed lubricant; contact-start-stop operations; hard disk lubricant; head cleaning effect; head surface; laser bump´s surface; laser textured bumps; plasma polymerized carbon; replication method; surface morphology; Atomic force microscopy; Hard disks; Lubricants; Magnetic heads; Optical microscopy; Plasmas; Polymer films; Surface cleaning; Surface emitting lasers; Surface morphology;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800836

Filename

800836