Effect of lubricant thickness and viscosity and rest time on long-term stiction in magnetic thin-film rigid disks
Effect of lubricant thickness and viscosity and rest time on long-term stiction in magnetic thin-film rigid disks
复制标题
润滑剂厚度、粘度和停留时间对磁性薄膜刚性磁盘长期静摩擦力的影响
DOI：
10.1109/20.706679
复制
发表时间：
1998
影响因子：
2.1
通讯作者：
B. Bhushan
中科院分区：
文献类型：
--
作者：
Zheming Zhao;B. Bhushan
这项研究首次尝试解决长期静摩擦作为润滑油膜厚度和粘度的函数，如果静摩擦接近一个恒定值。在试验中选择了三种类型的润滑剂。平衡静止时间，定义为静摩擦力达到其稳态值的时间，是在磁头滑块在磁盘表面上静止足够长的时间后达到的。较厚的润滑油膜增加了静摩擦力，但缩短了规定的平衡静止时间。较高的粘度增加静摩擦力和平衡静止时间。未润滑和润滑的磁盘之间的比较表明，静摩擦由于固体-固体粗糙接触是可以忽略的。讨论了中等湿度下润滑油粘性流动对弯月面力的影响。
This study makes a first attempt to address long term stiction as a function of lubricant film thickness and its viscosity, and if stiction ever approaches a constant value. Three types of lubricants are chosen in the tests. The equilibrium rest time, defined as the time for static friction force to reach its steady-state value, is reached after the head slider rests on the disk surface for a long enough time. A thicker lubricant film increases the static friction force but shortens the defined equilibrium rest time. Higher viscosity increases the static friction force and equilibrium rest time. Comparison between unlubricated and lubricated disks shows that stiction due to solid-solid asperity contact is negligible. The effect of lubricant viscous flow on the meniscus force at intermediate humidities is discussed.