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1Advancements in superlubricity显示文摘Superlubricity is a new area in tribology,in which the slide friction coefficient is about 1/1000 to 1/100 of the general ones.Since the concept of superlubricity was proposed,it has attracted more and more attentions from researchers in fields of tribology,physics,chemistry,materials,etc.Many significant progresses have been made during the last two decades in experimental studies on superlubricity.In the present work,the recent advancements in solid superlubricity and liquid superlubricity are reviewed and the lubricating mechanisms of different superlubricity systems are discussed.Finally,the problems on the superlubricity mechanism and the development of superlubricity in the future are addressed.LI JinJin LUO JianBin 2013Science China(Technological Sciences)2013,56,12:3
2Formation and tribology properties of polyfluoroal-kylmethacrylate film on the magnetic head surface显示文摘A polyfluoroalkylmethacrylate (PFAM) film has been coated on the surface of the magnetic head by a dipping coating method to modify the surface properties. The films were characterized by means of a time-of-flight secon- dary ion mass spectrometer (TOF-SIMS), contact angle measurement and atomic force microscopy (AFM). The re- sults indicate that the concentration of the solution is the main factor affecting the thickness, contact angle and surface topography of the film. The magnetic head with the PFAM film at a concentration of 500 ppm exhibits the best tribology properties, and the stiction between the magnetic head and the disk is no more than 2.4 g after 20000 contact start stop (CSS) cycles. Therefore, a fully covered PFAM film with few defects helps improve the tribology properties of the mag- netic head, and decrease the adsorbed contaminant on the magnetic head surface.HU Xiaoli ZHANG Chenhui LUO Jianbin WEN Shizhu 2005Chinese Science Bulletin2005,50,20:2
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