Kh. Chung et al., ASSESSMENT OF SURFACE DAMAGE MECHANISMS OF HEAD DISK INTERFACE USING CSS AND DRAG TESTS/, IEEE transactions on magnetics, 34(4), 1998, pp. 1714-1716
This work focuses on the mechanism of surface damage at the head/disk
interface of a hard disk drive (HDD) during contact. Tribological expe
riments were performed using a contact-start-stop (CSS) tester as well
as a drag tester, The results of both CSS and drag tests showed that
the surface damage of the slider surface occurred by abrasive wear and
adhesion. Wear particles tend to pile up along the front edges and th
e.boundary of the air bearing surface of the slider. As for the disk s
urface, evidence of mild burnishing wear could be found, and its surfa
ce roughness decreased with increasing number of contact cycles. It is
anticipated that the results of this work will serve as the basis for
developing schemes for improving reliability in the head/disk system
that experiences significant contact.