INVESTIGATION OF PHOSPHAZENE ADDITIVE FOR MAGNETIC RECORDING LUBRICATION

The addition of X-IP to the Fomblin Z-Dol disk lubricant is found to i mprove the contact start-stop (CSS) durability of hydrogenated carbon overcoated disks. Two-angle electron spectroscopy for chemical analysi s (ESCA), contact angle measurements, spin-off measurements, and degra dation studies on powdered AlCl3 and Al2O3 are used to show that X-IP improves lubrication by perfluoropolyethers on magnetic disks by chemi cally interacting with disk and slider surfaces so as to block sites f or lubricant degradation, to lower surface energies, and to increase l ubricant mobility.