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US 4,908,338 AGranted
Dried emulsion ceramic process
AssigneeSprague Electric Company
InventorsSidney D. Ross, Galeb H. Maher, Clinton E. Hutchins
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Abstract
Dried emulsion of precursors for ceramic additives are added to paints containing fine particle ceramic materials for use in ceramic capacitors. The precursors are converted into the desired additives in the paints during the sintering of the capacitor bodies.
Claims3
A dried emulsion process for introducing an additive, selected from the group consisting of cadmium zinc borate, niobium pentoxide, manganese oxide, and bismuth oxide, into fine powder ceramic multi-layer capacitor materials, said process comprising:
- forming an aqueous solution of precursors of said additive;
- forming an emulsion of a surfactant, a waterimmiscible fluid, and a dispersion of droplets of said solution;
- distilling water and said fluid from said emulsion so as to result in a dried emulsion of said precursors;
- and
- introducing an amount greater than 0% and up to 5% by weight of said dried emulsion into fine powder ceramic materials.
2 more elements
Dependencies are inferred from the claim text.