In disk drives of current generation, the thickness of the disk lubricant has been reduced to the level of a sub-monomolecular film. For a mono- or a sub-monomolecular film of a perfluoropolyether terminated with a primary hydroxyl unit at both ends, each lubricant molecular chain is chemically bound to the carbon substrate at both termini, and if it has a hydrocarbon sector inserted at its center, the hydrocarbon sectors would assemble at the top of the film. They are thus poised most aptly to react as a Lewis base (an electron donor) to the Lewis acid centers on the slider thus abating the Lewis acid-catalyzed lubricant degradation. A TOF-SIMS study of lubricant films of various thicknesses was performed. The study substantiated the envisaged lubricant posture.
- Information Storage and Processing Systems Division
Self-Protecting Disk Lubricant: D-MH2
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Kasai, PH, & Sagata, R. "Self-Protecting Disk Lubricant: D-MH2." Proceedings of the ASME 2017 Conference on Information Storage and Processing Systems collocated with the ASME 2017 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. ASME 2017 Conference on Information Storage and Processing Systems. San Francisco, California, USA. August 29–30, 2017. V001T01A014. ASME. https://doi.org/10.1115/ISPS2017-5458
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