Open-celled, electrically conductive ceramic network

Details Open-celled, electrically conductive ceramic network Open-celled, electrically conductive ceramic network

1986-05-20

1989-12-19

Barr, Josephine

Compositions

Electrically conductive or emissive compositions

Elemental carbon containing

252506, 252508, 521920, 524414, 524588, H01B 106

Patent

active

048877956

ABSTRACT:
Electrically semi-conducting and conducting open celled ceramic networks and methods for producing them are disclosed. The ceramic network is formed by impregnating an organic foam material with a semi-conducting or conducting ceramic composition, and firing the impregnated material to burn out the foam and to vitrify the ceramic. The semi-conducting or conducting ceramic composition may comprise, on a solids basis, from 45 to 80 percent of a lead-free ceramic frit, from 5 to 15 percent of mono aluminum phosphate, from 6 to 45 percent of a silicone resin, from 0.2 to 13.2 percent of a conducting carbon compound, and an organic solvent or water in an amount sufficient to form a dispersion having a viscosity ranging from 300 to 3000 centipoises, and, in the latter case, from 0.5 to 7 percent of a detergent. The electrically semi-conducting or conducting ceramic composition may also comprise, on a solids basis, a modified copper and alumina composition, from 6 to 45 percent of a silicone resin, and an organic solvent or water and detergent to produce a dispersion having a viscosity ranging from 300 to 3000 centipoises. The organic solvent systems and the aqueous systems both constitute dispersions.

REFERENCES:
patent: 3046328 (1962-07-01), Schurecht
patent: 3247132 (1966-04-01), Schurecht
patent: 4040998 (1977-08-01), Nemth
patent: 4083905 (1978-04-01), Insley et al.
patent: 4431575 (1984-02-01), Fagie et al.
patent: 4433098 (1984-02-01), Nemeth

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