Mechanical strength and wear resistance of 5 nm IBD carbon overcoats for magnetic disks

Author

Scharf, Thomas W. ; Wu, Tsai-Wei ; Yen, Bing K. ; Marchon, Bruno ; Barnard, John A.

Author_Institution

Alabama Univ., Tuscaloosa, AL, USA

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

1792

Lastpage

1794

Abstract

A micro-wear scan technique has been used to evaluate the tribological properties and adhesion strength of ion beam deposited (IBD) CH_x, CH_xN_y, and sputtered CH_x overcoats on magnetic recording disks. IBD carbon films with N content of 0-21% were deposited using different power conditions. High resolution SEM was utilized to determine the failure mechanisms and critical loads. The critical load increased with the deposition power and the nitrogen content in the films. The latter trend was somewhat surprising since the overcoat density and hardness decreased with nitrogen concentration

Keywords

adhesion; carbon; hardness; ion beam assisted deposition; magnetic disc storage; mechanical strength; scanning electron microscopy; wear resistance; 5 nm; C; IBD carbon overcoats; SEM; adhesion strength; critical loads; deposition power; failure mechanisms; hardness; ion beam deposited; magnetic disks; magnetic recording disks; mechanical strength; micro-wear scan technique; overcoat density; power conditions; tribological properties; wear resistance; Amorphous magnetic materials; Chemicals; Force measurement; Friction; Ion beams; Magnetic films; Magnetic properties; Nitrogen; Radio frequency; Spectroscopy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.950970

Filename

950970