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Thin Film Flexible Magnetic Media

IP.com Disclosure Number: IPCOM000048682D
Original Publication Date: 1982-Mar-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

DePew, JR: AUTHOR [+2]

Abstract

A flexible magnetic medium includes an aluminum surface deposited on a non-magnetic substrate. The aluminum surface is anodized and a nickel layer is plated onto the anodized surface using a nickel acetate plating solution, for instance, with an alternating electrical current.

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Thin Film Flexible Magnetic Media

A flexible magnetic medium includes an aluminum surface deposited on a non-magnetic substrate. The aluminum surface is anodized and a nickel layer is plated onto the anodized surface using a nickel acetate plating solution, for instance, with an alternating electrical current.

A high coercivity thin film recording surface can be obtained from a nickel coating deposited on an anodized aluminum surface. The aluminum surface is deposited on a non-magnetic substrate, such as a polyethylene terephthalate, or the like. The nickel seals the pores of the anodized aluminum layer. No degradation of the anodized aluminum surface is detectable after plating by the nickel solution.

A non-magnetic substrate is first coated with an aluminum layer which is then anodized. Immediately after anodizing the aluminum layer, the laminated substrate is placed into a nickel acetate solution. A nickel layer is plated onto the anodized aluminum surface using an alternating electrical current. A magnetic film of nickel is obtained having a coercivity in access of 800 oersteds. The nickel recording surface should be corrosion and wear resistant when used in a recording atmosphere.

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