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Surface Finishing for Magnetic Head Slider

IP.com Disclosure Number: IPCOM000065423D
Original Publication Date: 1985-Dec-01
Included in the Prior Art Database: 2005-Feb-19

Publishing Venue

IBM

Related People

Authors:
Hinkel, H Prinz, E Steiner, W [+details]

Abstract

A mechanical finishing process is described for a magnetic head slider having an increased service life over standard sliders. The life of a standard magnetic head/disk interface is limited by detrimental head/disk interference, starting with the formation of coating debris and ending with a head crash. The formation of debris is reduced by a special slider rail structure obtained by reactive ion etching of the composite ceramic slider material. An improved process of fabricating the special slider rail structure consists of mechanically grinding the composite ceramic as follows: 1) Grinding the slider with a lubricated particulate magnetic disk surface. 2) Grinding the slider on several (> 6) tracks of the disk surface. 3) Grinding at a relative head/disk velocity of 5.2 to 7.8 m/s, preferably 6.4 m/s.