Magnetic disk comprising a substrate with a cermet layer on a po

Details Magnetic disk comprising a substrate with a cermet layer on a po Magnetic disk comprising a substrate with a cermet layer on a po

1997-07-10

2000-02-29

Resan, Stevan A.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428336, 428694ST, 428694TS, 428694TP, 428694SG, 428900, 427129, 427555, 65 301, 65 324, G11B 582

Patent

active

060306815

ABSTRACT:
A method of forming an article having a cermet layer on a porcelain substrate, via the steps of (a) providing a substrate made a porcelain comprising one or more crystalline oxide phases dispersed in a glassy matrix, the glassy matrix containing 0.25 to 45.0 weight % of a reducible metal oxide having a reduction potential of between -1.0 and +3.5 E.degree./V; and (b) heating the substrate in a reducing atmosphere to form on at least one surface of the substrate a layer of cermet comprising elemental metal which is a reduction product of the reducible metal oxide. The article may be used as a substrate for magnetic recording disks.

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