The effect of hydrogen in carbon overcoats on the tribology of the head-disk interface

Author

Wang, Run-Han ; Meeks, Steven W. ; White, Richard L. ; Weresin, Walt E.

Author_Institution

IBM Almaden Res. Center, San Jose, CA, USA

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

2919

Lastpage

2921

Abstract

The effect of hydrogen in the carbon overcoat on the CSS durability of thin film media lubricated with perfluoropolyether (PFPE) is reported. A strain-gauge force transducer and optical surface analyzer (OSA) were employed to investigate the failure mechanism. The OSA provided in-situ monitoring of lubricant migration and modification as well as carbon wear. Durability improved with increasing hydrogen content over the range from 12 to 36 at% of H. The improvement is attributed to changes in lubricant bonding and mobility as a function of hydrogen content

Keywords

carbon; coatings; hydrogen; lubrication; magnetic disc storage; magnetic recording; wear resistant coatings; C:H; PFPE; bonding; carbon overcoats; contact start-stop durability; failure; head-disk interface; hydrogen; lubricant migration; mobility; optical surface analyzer; perfluoropolyether; strain-gauge force transducer; thin film media; tribology; wear; Bonding; Cascading style sheets; Condition monitoring; Failure analysis; Hydrogen; Lubricants; Optical films; Transducers; Transistors; Tribology;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.490190

Filename

490190