Investigation of X-1P coating on magnetic head to enhance the stubility of head/disk interface

Stable lubrication is essential to slider/disk interface of computer hard disk drive. Inertlubricant perfluoropolyether （PFPE） on magnetic hard disk in computer is still prone to catalyticdecomposition by AlO, which is one of the materials in slider. A partial fluorinated hexaphenoxycyclotriphosphazene chemical, X-1 P, was analyzed to research on its function to reduce the cata-lytic decomposition of lubricant. The surface free energy of X-1 P coated on head surface was alsoinvestigated. Contact start-stop （CSS） tester was employed to investigate the reflow effective ofX-1 P on lubricant PFPE. Results indicate that thermal stability and reflow of lubricant will be im-proved in the presence of X-1 P on the slider.