Magnetic recording medium comprising a chromium underlayer depos

Details Magnetic recording medium comprising a chromium underlayer depos Magnetic recording medium comprising a chromium underlayer depos

1989-03-21

1992-06-16

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Composite

Of inorganic material

428900, 428 64, G11B 500

Patent

active

051224232

ABSTRACT:
Magnetic recording media, wherein a substrate of Al-Mg alloy prepared from aluminum metal at a purity of higher than 99.99% is surface finished by electrolytic abrasive polishing and a thin film layer of ferromagnetic material is formed thereover as a recording layer.
The Al-Mg alloy is preferably prepared by rapid-cooling solidification.

REFERENCES:
patent: 4152487 (1979-05-01), Yanagisawa
patent: 4431461 (1984-02-01), Hoshino et al.
patent: 4839005 (1989-06-01), Katsumoto et al.

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