Title :
Adsorption properties of lubricant and additive for high durability of magnetic disks
Author :
Matsumoto, H. ; Tani, H. ; Nakakawaji, T.
Author_Institution :
Div. of Data Storage & Retrieval Syst., Hitachi Ltd., Kanagawa, Japan
fDate :
7/1/2001 12:00:00 AM
Abstract :
Additives, such as cyclotriphosphazenes, those are mixed to the perfluoropolyethers (PFPE) lubricants are used in order to improve the tribological properties of magnetic disks. The proper concentration of additive improved the CSS performance. The effects of additive were clarified using several kinds of instruments. There was no segregation of each molecule in the less than 2-nm-thick film. The additive had the effect on increasing the mobile layer of the layered structure. The coverage of the mixed lubricant film with an additive was higher than that of PFPE. The reflow rate of the mixed lubricant film was larger. The higher coverage and the higher reflow rate of the mixed lubricant film improve the durability of magnetic disk
Keywords :
adsorption; lubrication; magnetic disc storage; adsorption; contact start/stop test; cyclotriphosphazene additive; durability; head-disk interface; magnetic disk; mixed lubricant film; perfluoropolyether lubricant; tribological properties; Additives; Amorphous magnetic materials; Infrared spectra; Instruments; Lubricants; Lubrication; Magnetic films; Magnetic properties; Magnetic separation; Mass spectroscopy;
Journal_Title :
Magnetics, IEEE Transactions on
