CYCLOTRIPHOSPHAZENES AS POTENTIAL LUBRICANTS FOR THIN-FILM HARD DISKS

This paper explores the use of phosphazenes as alternative lubricants for thin film hard disks. Contact start/stop (CSS), stiction and drag tests were performed on five disks lubricated with a typical cyclic ph osphazene lubricant, X-Ip with a thickness in the range of 0.3 nm to 0 .7 nm. The coefficients of function and stiction were found to increas e initially, then level off and reach a steady-state value without a f urther increase after 2000 CSS cycles. It is concluded that X-lp perfo rms well on thin film disks with a lubricant thickness of about 0.5 nn .