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Publication Citation: Effects of Long Wavelength UV Irradiation on PFPE Molecular Bonding on CNx for Magnetic Recording Hard Disks

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Author(s): J Zhang; Stephen M. Hsu; T Y. Liew;
Title: Effects of Long Wavelength UV Irradiation on PFPE Molecular Bonding on CNx for Magnetic Recording Hard Disks
Published: Date Unknown
Abstract: The use of long wavelength UV irradiation (320 to 390 nm) to induce bonding of a perffluoropolyether (PFPEP on CNx disks has been successfully demonstrated. Disks with 100 % mobile molecules, 100% bonded molecules, and a 50:50 mixture of mobile and bonded molecules were prepared by dip-coating. These lubricant films were irradiated with a UV beam. Friction and wear measurements were performed on these disks using a Lateral Force Microscope, a diamond-tipped Atomic Force Microscope, and a ball-on-inclined plane test. Results suggested that the mobile PFPE performed better than the bonded one. The mixed lube gave the highest critical failure load as measured by a ball-on-inclined plane test.
Citation: Tribology Letters
Keywords: friction;lubricant bonding;magnetic hard disk;nanotribology;PFPE;UV irradiation;Z-Dol
Research Areas: Characterization, Ceramics