Ultra-Thin Overcoats for the Head/Disk Interface Tribology

[+] Author and Article Information
C. Singh Bhatia

SSD/IBM, 5600 Cottle Road, San Jose, CA 95193

S. Anders, I. G. Brown

Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720

K. Bobb, R. Hsiao, D. B. Bogy

Department of Mechanical Engineering, University of California, Berkeley, CA 94720

J. Tribol 120(4), 795-799 (Oct 01, 1998) (5 pages) doi:10.1115/1.2833781 History: Received June 10, 1997; Revised October 24, 1997; Online January 24, 2008


Cathodic arc deposition forms ultra-thin amorphous hard carbon films of high sp3 content, high hardness, and low coefficient of friction. These properties make it of great interest for head/disk interface application, in particular for contact recording. In many cases, the tribological properties of the head disk interface could be improved by factors up to ten by applying cathodic arc overcoats to the slider or disk surface. This paper reviews the results of cathodic arc ultra-thin (2–10 nm) carbon overcoats for head/disk interface tribological applications.

Copyright © 1998 by The American Society of Mechanical Engineers
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