Browse Prior Art Database

Production Process for Magnetic Head Sliders of Ceramic Material

IP.com Disclosure Number: IPCOM000034664D
Original Publication Date: 1989-Apr-01
Included in the Prior Art Database: 2005-Jan-27
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Engler, U: AUTHOR [+3]

Abstract

Modified sliding faces of magnetic head sliders of mixed ceramic material are produced by a grinding process which in batch mode is simultaneously applied to a plurality of sliders. According to European Patent Application 0090055, a magnetic head slider 1, a sectional enlarged view of which is shown in the figure and which is made of an aluminum oxide/titanium carbide mixed ceramic material, is provided on its sliding face 2, facing the magnetic record carrier, with a thin surface layer 4 from which the titanium carbide 5 component is removed. Removal is effected by preferential reactive ion etching in a CF4 plasma. A magnetic head slider thus modified has vastly improved sliding characteristics over sliders of the same material, whose sliding face has not been modified.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 93% of the total text.

Page 1 of 2

Production Process for Magnetic Head Sliders of Ceramic Material

Modified sliding faces of magnetic head sliders of mixed ceramic material are produced by a grinding process which in batch mode is simultaneously applied to a plurality of sliders. According to European Patent Application 0090055, a magnetic head slider 1, a sectional enlarged view of which is shown in the figure and which is made of an aluminum oxide/titanium carbide mixed ceramic material, is provided on its sliding face 2, facing the magnetic record carrier, with a thin surface layer 4 from which the titanium carbide 5 component is removed. Removal is effected by preferential reactive ion etching in a CF4 plasma. A magnetic head slider thus modified has vastly improved sliding characteristics over sliders of the same material, whose sliding face has not been modified. For economically producing such sliders, it is recommended that a special step be introduced immediately after lapping. At that stage, the sliders exist as a plurality of undiced rows which, during lapping, are kept in place in a tool. The sliders, thus assembled, are brought into contact with a lubricated particulated magnetic disk and ground at low speed for about 0.5 h, using a modified lapping machine. In that manner the titanium carbide component is economically removed from the surfaces of the sliders in batch mode, i.e., larger numbers of sliders are treated simultaneously. The pretreated sliders are then processed as usual...