The use of phosphazene additives to enhance the performance of PFPAE lubricants

Abstract Cyclic phosphazenes are being developed as advanced lubricant additives for both rigid and flexible thin film magnetic media. Contact Start-Stop (CSS) test results with X-1P as an additive with perfluorinated polyalkylethers (PFPAEs) show it to have similar tribological performance to standard perfluoropolyalkyl ethers (PFPAE) as a topical lubricant on carbon-overcoated thin film rigid disks under ambient conditions. However, X-1P as an additive with PFPAE's significantly outperforms Z-DOL and AM3001in CSS testing under hot/wet (30°C, 80 RH) conditions. In addition to its CSS test performance, X-1P as an additive was found to stabilize the PFPAE when heated in the presence of water and standard slider material, Al 2 O 3 –TiC.