Friction and Wear Studies of Carbon Overcoated Thin Films Magnetic Sliders: Application of Raman Microspectroscopy

[+] Author and Article Information
S. S. Varanasi, J. L. Lauer, F. E. Talke

Center for Magnetic Recording Research, 0401, University of California, San Diego, CA 92093

Geng Wang, J. H. Judy

The Center for Micromagnetic and Information Technologies, University of Minnesota, Minneapolis, MN 55455

J. Tribol 119(3), 471-475 (Jul 01, 1997) (5 pages) doi:10.1115/1.2833521 History: Received October 12, 1995; Revised July 01, 1996; Online January 24, 2008


The friction and wear behavior of diamond-like carbon (DLC) overcoated sliders is investigated as a function of DLC overcoat thickness using contact-start-stop and constant speed drag tests. The dependence of the Raman signal on DLC film thickness is studied. Raman spectra obtained from different locations on the air bearing surface are analyzed before and after wear testing to study wear of the DLC overcoat. The dependence of D and G band areas on DLC film thickness is investigated and the use of Raman spectroscopy for auxiliary measurement of carbon overcoat thickness is discussed.

Copyright © 1997 by The American Society of Mechanical Engineers
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