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Browse Prior Art Database

Electrodeposition Of Permanent Magnetic Materials

IP.com Disclosure Number: IPCOM000095451D
Original Publication Date: 1964-Jan-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Koretzky, H: AUTHOR

Abstract

This multi-step electrodeposition process is for fabricating permanent magnetic films containing iron, cobalt, nickel, aluminum and copper.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Electrodeposition Of Permanent Magnetic Materials

This multi-step electrodeposition process is for fabricating permanent magnetic films containing iron, cobalt, nickel, aluminum and copper.

In the fabrication process, copper is deposited on a substrate.

The substrate is then inserted into an aqueous bath consisting of iron, cobalt, and nickel ions and it is made electro-negative. These ions are present in amounts sufficient to electroplate a layer of material having the chemical formulation of 57% iron, 27% cobalt and 16% nickel. Upon establishing a layer of this material over the copper, the substrate is removed from the aqueous solution. It is inserted into a fused salt bath for depositing aluminum. A negative potential is impressed upon the substrate. With the application of heat, both the aluminum and copper are diffused into the iron, cobalt, nickel film, thus forming a permanent magnetic material.

In this manner, electrodeposition techniques are utilized to form thin film, powerful permanent magnets which are non-porous.

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