Patent · US Expired

Magnetic head slider of ceramic material

US4549238A · kind A · utility

27Cited by

1References

7Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Friedrich Ertingshausen · Nieder-Olm, DE
Volker Heinrich · Nordstemmen, DE
Holger Hinkel · Böblingen, DE
Gerhard Kaus · Metzingen, DE
Jurgen Kempf · Schönaich, DE
Hans-Georg Nauth
Manfred Schrader · Böblingen, DE

Key dates

Filing date	Jan 10, 1983
Grant date	Oct 22, 1985
Priority date	—
Expiry date	Jan 10, 2003

Classification

Technology area (CPC G)Physics
CPC primaryG11B23/507
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic head slider consisting of a mixed ceramic made of aluminum oxide/titanium carbide has on its sliding side adjacent a magnetic record carrier a thin layer from which the titanium carbide component has been removed. The titanium carbide component preferably is removed by preferential reactive ion etching in a CF.sub.4 plasma. The magnetic head slider with its sliding surface thus modified exhibits greatly improved sliding properties compared with sliders of the same material having a non-modified sliding surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.