The Study of Tribology Performance for Hard-Disk Surface Topography

• Main Authors: Pei-Lun Chien, 簡培倫
• Other Authors: Tze-Chi Hsu
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/94082006863770021359

碩士 === 元智大學 === 機械工程學系 === 93 === In order to increase recording density of hard disk drive, the flying height of slider must be continual reduce. In the mean time, the tribology performance of head-disk interface (HDI) is more rigorous；however the disk surface topography is a key point to improve increase tribology performance for a HDI. The disk surface topography can be roughly divided into two regions: roughness and waviness, however the disk roughness have been widely studied by experiments and simulation models. In this study, we change the material remove amount of Ni-P/Al substrate in the chemical mechanical polishing process (CMP), and then we can get different surface topography of disk. We use an optical surface analyzer (model number: OSA5100) to measure waviness of disk surface. After measured waviness of disk surface, we can discriminate four different characteristic of waviness for disk. We used 30% padded slider to perform tribology tests on the disk. In this study, we will analysis what characteristic of the disk waviness can improve the tribology performance of HDI, and expect this study can be extended into future high recording density of hard disk drive.