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Bulk Ferrite Fabrication

IP.com Disclosure Number: IPCOM000095573D
Original Publication Date: 1964-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Schwartz, B: AUTHOR

Abstract

The method is for producing electrically conductive paths in bulk ferrite devices.

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Bulk Ferrite Fabrication

The method is for producing electrically conductive paths in bulk ferrite devices.

Bulk devices are formed from laminated green ceramic sheets, such as 2, 4 and 6, which are composed of ferrite material and organic binder. Thin films of desired conductive circuitry patterns in the form of strips 8, 10 and 12 are applied to the separate green sheets. Such is by techniques of silk screening or printing of waxes or resins, prior to the forming, by lamination, of a bulk composite, from the respective sheets 2, 4 and 6. In the bulk composite, the waxes or resins can also be formed into columns perpendicular to the conductive patterns in the planes of the sheets.

On sintering, the laminated sheets fuse into an integral composite which does not disclose a discernible interface between sheets. Also, during the sintering process, the waxes or resins in the columns and planes are vaporized leaving holes shaping the desired circuitry.

Metals or other conductors are introduced into these holes by way of capillary action, thus completing the electrical conductor path in the bulk ferrites.

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