Abstract
Perfluoropolyether (PFPE) lubricants are generally used in order to obtain good tribological properties of magnetic disks. This is performed to protect the magnetic elements from corrosion and wear and to provide interface durability. In this paper, we present the results of the nanotribological characteristics of two perfluoropolyether-coated (PFPE) magnetic diamondlike carbon (DLC) film disks with and without thermal curing. Lateral oscillation wear experiments were performed using the lateral modulation friction force microscopy (LM-FFM) mode in the load range of 2280 nN, at a scanning speed of 3 Hz and a vibration frequency of 1 kHz, using a diamond tip of approximately 26 nm radius. The surface topography of the PFPE-coated disks with and without thermal curing was examined by atomic force microscopy (AFM). The result shows that the PFPE-coated disk without curing has a good wear resistance property, compared with that of the PFPE-coated disk with curing due to the supply of free lubricant by tip sliding. Corresponding to this, using viscoelasticity AFM (VE-AFM) in the vertical force mode, the vertical oscillation wear experiments were performed under the same conditions and the result shows that the viscoelasticity of the PFPE-coated disk without curing increased, which provides the evidence of the supply of free lubricant on the PFPE film without curing.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
