Title :
Effect of relative humidity on friction behavior of the head/disk interface
Author :
Tian, Hong ; Matsudaira, Taka
Author_Institution :
Hoya Electronics Corp., San Jose, CA, USA
fDate :
9/1/1992 12:00:00 AM
Abstract :
The effect of relative humidity on friction behavior of the head-disk interface was investigated experimentally. The thickness of adsorbed water on both head and disk surfaces was measured at various relative humidities using an ellipsometer. Lubricated disks adsorbed less water than unlubricated disks, and an optimal thickness of lubricant was found for the least water adsorption. It was found that total liquid thickness (lubricant and adsorbed water) on both contacting surfaces was better correlated with static friction coefficient compared with total liquid thickness on the disk surfaces only or total water thickness only at the head-disk interface
Keywords :
adsorption; friction; humidity; lubrication; magnetic disc storage; magnetic heads; adsorbed water thickness; ellipsometer; friction behavior; head/disk interface; optimal lubricant thickness; relative humidity; static friction coefficient; total liquid thickness; total water thickness; water adsorption; Disk recording; Friction; Glass; Humidity measurement; Lubricants; Magnetic heads; Rough surfaces; Surface roughness; Surface tension; Thickness measurement;
Journal_Title :
Magnetics, IEEE Transactions on
