抄録
It has been believed that the higher the lubricant diffusion coefficient, the higher the hard disk drive (HDD) reliability. However, it was reported that head wear increased in higher temperature environment even diffusion coefficient became larger. To understand this contradiction, we studied the effects of environmental conditions on pin wear using a transparent pin-on-disk seek wear tests. The results showed that the higher the temperature or the relative humidity, the lower the pin wear. These results followed our belief, though the reason of difference between prior head wear and present pin wear tests were not clear. However, the behavior of picked up lubricant on pin surface was not the same in the two high diffusion coefficient conditions. In high temperature conditions, lubricant pick-up became large. On the other hand, the amount of picked up lubricant became less in higher humidity environments.
