Magnetic recording medium and process for producing the same

Details Magnetic recording medium and process for producing the same Magnetic recording medium and process for producing the same

1988-02-12

1991-01-08

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428694, 428695, 428900, G11B 2300

Patent

active

049834550

ABSTRACT:
The invention provides a magnetic recording medium having a ferromagnetic metallic layer provided on a non-magnetic substrate, and an anticorrosive deposited on said ferromagnetic metallic layer containing a benzotriazole derivative as a main component. A magnetic recording medium is also provided having on a substrate, a ferromagnetic metallic layer containing cobalt as a main component, a passivated cobalt layer on said ferromagnetic metallic layer and an anticorrosive layer on said passivated cobalt layer, said anticorrosive layer comprising at least one anticorrosive selected from benzothiazole derivatives, benzoimidazole derivatives haaving at least one of amino group, nitro group, chlorine and mercapto group as substituent in the benzoimidazole skeleton, benzotriazole, compounds containing nitrosonaphthol as a main component, oxime compounds, phytic acid and its derivatives, quinaldinic acid and its derivatives, quinoline compounds, naphthaldehyde and its derivatives. A process for producing the same is also provided.

REFERENCES:
patent: 4074012 (1978-02-01), Heikkinen
patent: 4315057 (1982-02-01), Horigome
patent: 4425404 (1984-01-01), Suzuki
patent: 4464279 (1984-08-01), Arai
patent: 4520651 (1985-07-01), Kitoo
patent: 4668587 (1987-05-01), Sumiya
patent: 4677023 (1987-06-01), Ishizaki
patent: 4698280 (1987-10-01), Mine
patent: 4701375 (1987-10-01), Nishimatsu
patent: 4746559 (1988-05-01), Nishikawa
"Improvement of Corrosion Resistance of CoNi Thin Films by Surface Passivation", by Wakai, J. Applied Phys., Apr. 15, 1987.

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