An advanced head disk interface (HDI) system assisted by gas perfluoropolyether (PFPE) lubrication is discussed in this paper.It is known that Mens gloves lubricant spins off at a high rotation speed and high temperature.Lubricant redistribution after long-term seeking operation with near-contact flying has been studied.The spin-off and redistribution of lubricant are serious problems for the reliability of hard disk drives (HDDs).An HDI system is proposed that exhibits high performance without lubricant spin-off and redistribution; that is, it allows only a small amount of lubricant to drip on the recirculation filter in the head disk assembly (HDA).
This lubricant evaporates in the Beach Bag HDI at a high temperature, and the lubricant gas is adsorbed on the disk surface.Consequently, the thickness of the lubricant layer decreases because of spin-off or degradation.As a result, the spin-off, redistribution, and head contamination are significantly reduced.The lubricant can be maintained for a long time on the magnetic disk.In this study, we focused on the reduction of head contamination by gas lubrication.
We confirmed that gas lubrication reduced head contamination caused by long-term HDD operation.