Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1994-08-10
1996-01-02
Ryan, Patrick J.
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
428 156, 428141, 428167, 428408, 428694ST, 428694TC, 360135, 360131, B32B 900
Patent
active
054806950
ABSTRACT:
Substrates are disclosed having an ultra-smooth surface finish thereon rendering them useful in making high density magnetic storage components, such as a computer hard disk or thin-film head which can read and/or write data on such disks. The substrates are comprised of a non-oxide ceramic base which is coated with a smoothing layer comprised of amorphous, non-stoichiometric silicon carbide corresponding to the formula SiC.sub.x, wherein x is the molar ratio of carbon to silicon and is greater than 1. Also disclosed are processes for making the substrates and components.
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Ruppel Irving R.
Tenhover Michael A.
Jewik Patrick R.
Ryan Patrick J.
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