Abstract
In this study, we prepared two types of PFPE lubricants (D-4OH and DDOH) with different end-groups. These lubricants have the same backbone, but D-4OH has two end-groups at both side of main chain and DDOH has a end-group at single side of main chain. The ultra-thin composite lubricant consisted by these lubricants were coated on magnetic disks. We studied the clearance between head and disk surface and the slider wear after touch-down cycles on the lubricant film with different bonding(as dip/UV/UV-rinse) and the D-4OH/DDOH composite lubricant film. As a result, we found that the UV-rinsed lubricant film showed the widest clearance in the lubricant film with three kinds of bonding and the D-4OH/DDOH composite lubricant film showed the possibility to reduce the slider wear.
