Effect of the additive X-1P on the tribological performance and migration behavior of PFPE lubricant at the head-disk interface

We study the effect of X-1P as an additive in PFPE lubricants using an ultr a-high vacuum (UHV) tribochamber equipped with a mass spectrometer, The stu dies consist of drag tests in the UHV tribochamber, Two decomposition proce sses of ZDOL under sliding friction conditions are studied-one is with a ca rbon film coated slider, and another is with an uncoated Al2O3-TiC slider. An optical surface analyzer (OSA) is also used to observe the lube migratio n behavior. We observe that X-1P passivates the head and prevents the catal ytic reaction of the PFPE when used as an additive, In addition, X-1P also increases PEPE's mobility and, hence, improves the tribological performance at the head-disk interface.