Method for fabricating multiwound microcoils embedded in a ceram

Details Method for fabricating multiwound microcoils embedded in a ceram Method for fabricating multiwound microcoils embedded in a ceram

1997-06-20

1998-07-14

Fiorilla, Christopher A.

Plastic and nonmetallic article shaping or treating: processes

Outside of mold sintering or vitrifying of shaped inorganic...

Of electrical article or electrical component

264614, 264635, 264643, C04B 3334

Patent

active

057799695

ABSTRACT:
A method for fabricating a multiwound microcoil embedded in a ceramic substrate including the steps of forming a sacrificial multiwound microcoil, having a melting temperature greater than the sintering temperature of the ceramic material to be used as the ceramic substrate by wrapping a first sacrificial coil winding in a helical fashion on the midsection of a sintered ceramic bar thereby forming a one winding sacrificial coil structure; wrapping a first layer of tape cast ceramic material around the midsection of said one winding sacrificial coil structure thereby forming a first coated one winding sacrificial coil structure; wrapping a second sacrificial coil winding in a helical fashion on the midsection of said first coated one winding sacrificial coil structure thereby forming a two winding sacrificial coil structure. The method further includes forming green ceramic material into the shape of the ceramic substrate incorporating said formed sacrificial multiwound microcoil; sintering the green ceramic material; removing the sacrificial multiwound microcoil from the sintered ceramic substrate; flowing molten electrically conductive material into the space relinquished by the removed sacrificial multiwound microcoil; and cooling the molten electrically conductive material to fabricate the multiwound microcoil embedded in a ceramic substrate.

REFERENCES:
patent: 4994215 (1991-02-01), Wiech, Jr.
patent: 5240671 (1993-08-01), Carey
patent: 5683649 (1997-11-01), Chatterjee et al.

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