Method of making a magnetic record medium

Details Method of making a magnetic record medium Method of making a magnetic record medium

1993-12-09

1995-08-01

Niebling, John

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Forming nonmetal coating using specified waveform other than...

2041922, 205201, 205206, 205214, 205219, 427129, C25D 534

Patent

active

054377790

ABSTRACT:
A method of making a-magnetic record medium comprising the steps of: texturing a surface of a substrate by a first surface treatment; electrolyzing the surface of the textured substrate in an electrolyte of an acidic solution by applying an electric potential on the nonmagnetic substrate by a second surface treatment; and forming an undercoating layer and a magnetic layer on the surface of the electrolyzed substrate.

REFERENCES:
patent: 5057200 (1991-10-01), Lal et al.
patent: 5223304 (1993-06-01), Yasuda et al.
Lowenheim, Anodizing Aluminum, Electroplating, pp. 452-461 (1978) [no month].
Graham, Conversion Coating Process, Electroplating Engineering Handbook, 3rd edition, pp. 456-464 (1971) [no month].

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