Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1976-02-23
1978-01-31
Goldberg, Elliot A.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
361321, 428192, 428136, H01G 114, H01G 412
Patent
active
040718808
ABSTRACT:
A sintered ceramic article which comprises internal electrodes and/or conductors is formed by producing a sintered ceramic body that has areas of ceramic material extending to an outer face thereof, said areas having an open structure characterized by interconnected voids, and thereafter providing a conductor in said porous areas. The ceramic body may be formed by depositing, for example by screen printing, on sheets of a powdered dielectric or insulating ceramic material bonded with a temporary bond, an area of a temporarily bonded powdered ceramic material which on firing becomes porous, i.e. open-structured, consolidating a plurality of such sheets, and sintering them. Subsequently, electrodes or conductors may be provided in the open-structured areas by impregnating said areas with a metal or alloy and providing a termination electrode on the said outer face. If desired, an open-structured permeable barrier can be provided on said outer face before such impregnation. The barrier may be either a porous ceramic or a porous conductive coating which serves as a termination electrode.
REFERENCES:
patent: 3561110 (1971-02-01), Feulner et al.
patent: 3679950 (1972-07-01), Rutt
Rutt, et al., "Fabrication of Multilayer Ceramic Capacitors by Metal Impregnation", in IEE Transactions on Hybrids, vol. PHP No. 9, 9/73.
Goldberg Elliot A.
Harlan, Jr. Ashlan F.
N L Industries, Inc.
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