磁头润滑油饱和厚度研究

Research on the Lubricant Thickness of the Magnetic Head

为了解决生产过程中需反复测量磁头润滑油饱和厚度的问题,结合原子力学显微镜(AFM),做反复动态测试,测试表明,在2.5 nm以内,磁头读写磁碟数据处,润滑油饱和厚度与该处距磁碟中心长度呈好的线性关系.2.5 nm以外到磁碟边缘,采用改进欧拉算法处理数据,发现润滑油饱和厚度的计算值和实际值的差值与该处距磁碟中心长度也呈线性关系.对实验结果误差进行了理论分析和实际验证,结果表明,由于空气流压力以及磁碟边缘磁隙引发的局部磁泄,磁头边缘润滑油饱和厚度很难预测.

In order to solve the problem of surveying the magnetic head＇s lubricating thickness repeatedly in the production process, the dynamic tests were done repeatedly by using Atomic Force Microscope （AFM） . The results have shown that, below 25 angstroms, where the head reads and writes data, were carried out the relationship between the lubricant thickness and the distance of the point from the disk center is linear. From 25 angstroms to the edge of the disk, by using the improved Euler method to process the data, the relationship between the difference of the calculated value and the actual value was found, and the distance of the point from the disk center is linear. The theoretical analysis and actual confirmation of the experiment errors were carried out, with indicated that, because of the air current pressure release and the partial magnetism releases caused by the magnetic head gap in the diskette edge, the magnetic head edge lubricating thickness is very difficult to forecast.