The Effect of Disk Roughness on the Wear of Contact Recording Heads
The Effect of Disk Roughness on the Wear of Contact Recording Heads
复制标题
磁盘粗糙度对接触式录音磁头磨损的影响
DOI：
10.1115/1.2831610
复制
发表时间：
1996
影响因子：
2.5
通讯作者：
M. Suk
中科院分区：
文献类型：
--
作者：
M. Suk
在传统的磁盘文件中，当磁盘以其设计速度旋转时，滑块由空气轴承支撑。随着磁间距的不断减小以增加面密度，传统记录系统的自然延伸是接触记录。我们调查的磨损的接触记录头设计为这样一类的刚性磁盘文件的读/写元件承载滑块的目的是保持连续接触，在磁盘驱动器操作的每个阶段。特别地，我们研究了磁盘粗糙度和负载对记录头磨损率的影响。观察到磨损率与初始界面载荷成正比，但该观察结果无法外推到超出本文研究的载荷。实验观察结果与磨料磨损模型适用的系统的预期一致。我们还表明，磨损率主要取决于孤立的粗糙度，位于磁盘表面粗糙度的三个标准差之外的存在。
In conventional disk files, the slider is supported by an air-bearing when the disk is rotating at its designed speed. With the continued reduction of magnetic spacing in order to increase the areal density, a natural extension of the traditional recording system is contact recording. We investigate the wear of the contact recording head designed for such a class of rigid magnetic disk files where the read/write element carrying slider is intended to remain in continuous contact during every phase of the disk drive operation. In particular, we study the effect of disk roughness and load on the wear rate of the recording head. It is observed that the wear rate is proportional to initial interfacial load, however the observation cannot be extrapolated beyond the loads studied in the paper. The experimental observations agree well with expectations for a system where an abrasive wear model applies. We also show that the wear rate is predominantly governed by the existence of isolated asperities that lie well outside of three standard deviations of the disk surface roughness.