Method for coating metal disc substrates for magnetic-recording

Coating processes – Direct application of electrical – magnetic – wave – or... – Ion plating or implantation

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427528, 427531, 427131, 427132, 20419216, 2041922, 20419215, C23C 1406, C23C 1408, C23C 1432, B05D 512

Patent

active

056269200

ABSTRACT:
A coated metal-substrate disk for magnetic-recording applications is disclosed having a first coating selected from the group consisting of nitrides, carbides, or borides of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, or tungsten, or the group consisting of aluminum nitride, silicon nitride, or silicon carbide on the metal substrate and a magnetic-recording material coating on the first coating. The first coatings are applied by evaporative reactive ion plating or by reactive sputtering.

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