Wear and Boundary Lubrication of Oxide Coated Magnetic Disks

在磁盘文件和磁带驱动器中，读/写元件通过薄空气轴承与磁性介质分开。在目前“最先进”的磁盘文件中，空气轴承的飞行高度约为。33微米，减小到小于。预计在不久的将来会达到2um。在这些小间距，读/写磁头和磁性介质之间的接触是不可避免的。此外，在文件的启动/停止和寻迹期间还会发生接触。由于这些接触会导致磁头/磁盘界面的磨损，因此需要彻底了解磁头/磁盘摩擦学，并且在设计单个组件时必须非常小心，以保证足够的使用寿命。本课题研究的是氧化涂层刚性磁盘的磨损和边界润滑机理。在无润滑和润滑磁介质上进行摩擦磨损实验，并设计加速磨损试验。分析表面仪器将用于研究润滑油在磁盘上的分布，并对头部/磁盘磨损机理进行理论建模。

In magnetic disk files and tape drives, the read/write element is separated from the magnetic medium by a thin air bearing. In present "state of the art" disk file, the air bearing flying height is approximately .33 um, and a reduction to less than .2 um is anticapated in the near future. At those small spacings, contacts between the read/write head and the magnetic medium are unavoidable. In addition contacts occur during start/stop of the file and during track seeking. Since these contacts cause wear of the head/disk interface, a thorough understantding of head/disk tribology is required, and extreme care must be exercised in the design of the individual components to guarantee sufficient life time. This project is concerned with the mechanisms of wear and boundary lubrication of oxide coated rigid magnetic disks. Friction and wear experiments will be conducted on unlubricated and lubricated magnetic medium, and accelerated wear tests will be designed. Analytical surface instrumentation will be used to investigate lubricant distribution on the disk, and theoretical modeling of the head/disk wear mechanism will be conducted.