High shear rate viscosity measurements of perfluoropolyether lubricants for magnetic thin-film rigid disks
High shear rate viscosity measurements of perfluoropolyether lubricants for magnetic thin-film rigid disks
复制标题
磁性薄膜硬盘用全氟聚醚润滑剂的高剪切速率粘度测量
DOI：
10.1063/1.364548
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发表时间：
1997
影响因子：
3.2
通讯作者：
B. Bhushan
中科院分区：
文献类型：
--
作者：
C. Hahm;B. Bhushan
与磁盘驱动器操作中遇到的非常高的剪切速率相关的润滑剂流变学数据不存在。在这项研究中，八种全氟聚醚润滑剂的粘度在环境压力下以高达107 s−1的剪切速率测量。所有八种润滑剂在所有剪切速率下均显示牛顿行为。没有观察到剪切稀化，并且发现润滑剂能够承受极高的拉伸应力，约为1MPa。
Lubricant rheology data relevant to the very high shear rates encountered in disk drive operation do not exits. In this study, the viscosity of eight perfluoropolyether lubricants is measured at shear rates up to 107 s−1 at ambient pressure. All eight lubricants display Newtonian behavior at all shear rates. No shear thinning was observed and the lubricants were found capable of sustaining extremely high tensile stresses, on the order of 1 MPa.