On-line tribology measurements on lubricated rigid disks

Author

Nunnelley, L.L. ; Burleson, M.A. ; Fuller, G.G.

Author_Institution

IBM Corp., San Jose, CA, USA

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2679

Lastpage

2681

Abstract

A high-speed ellipsometer has been devised for online wear measurements of recording media. The instrument can either determine spatially resolved film-thickness profiles across a wear track or make high-speed measurements of the angular dependence of wear damage as the test specimen rotates. In its present configuration, data-acquisition rates of 300 Hz are possible. Experiments on thin film demonstrate the ability of the technique to monitor thin-film profiles and to reveal the progression of wear from the ablation of the lubricant layer to the removal of the magnetic film

Keywords

hard discs; magnetic thin films; tribology; wear; 300 Hz; ablation; angular dependence; high-speed ellipsometer; high-speed measurements; lubricant layer; lubricated rigid disks; magnetic film; online wear measurements; recording media; removal; spatially resolved film-thickness profiles; thin-film profiles; wear damage; wear track; Lubricants; Magnetic films; Optical films; Optical polarization; Optical reflection; Optical refraction; Optical retarders; Time measurement; Tribology; Velocity measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104836

Filename

104836