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Dynamic Friction Study on Voltage Assisted Overcoat Wearing Head-Disk Interface

[+] Author Affiliations
Sukumar Rajauria, Sripathi Canchi, Erhard Schreck, Qing Dai

HGST, San Jose, CA

Bruno Marchon

EpiBiome, San Francisco, CA

Paper No. ISPS2016-9579, pp. V001T01A010; 4 pages
  • ASME 2016 Conference on Information Storage and Processing Systems
  • ASME 2016 Conference on Information Storage and Processing Systems
  • Santa Clara, California, USA, June 20–21, 2016
  • Conference Sponsors: Information Storage and Processing Systems Division
  • ISBN: 978-0-7918-4988-0
  • Copyright © 2016 by ASME


Voltage assisted wear at the head and the disk interface is investigated with the motive of understanding the head overcoat wear processes. In this work, we report the quantitative analysis of voltage assisted wear on head carbon overcoat at high sliding speed interfaces. We found that voltage assisted TFC head wear acts asymmetrically at the interface with positive voltage leading to high wear. We quantitatively analyzed the interface using a strain gauge based friction measurement.

Copyright © 2016 by ASME



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