Dielectric for a capacitor and a method of manufacturing same
AssigneesHyundai Motor Company, Kia Corporation, Korea Institute of Ceramic Engineering and Technology
InventorsHyungsuk Kim, Hyo Soon Shin, Dong Hun Yeo, Jeoung Sik Choi
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Abstract
A method of manufacturing a dielectric for a capacitor and a dielectric for a capacitor manufactured thereby are provided. A dielectric for a capacitor is prepared by calcining a precursor mixture containing lead, lanthanum, zirconium, and titanium to produce calcined powder, adding additives including sodium, potassium, and the like to the powder, and sintering the mixture at a low temperature, whereby the dielectric has a high density and a large dielectric constant.
Claims9
A method of manufacturing a dielectric for a capacitor, the method comprising:
- mixing precursors of a dielectric to prepare a precursor mixture;
- calcining the precursor mixture to produce a calcined product;
- pressing the calcined product to produce a molded product;
- sintering the molded product to obtain a sintered product;
- and
- adding an additive to the calcined product after the calcining,
- wherein the additive comprises sodium and potassium and
- wherein the additive comprises sodium and potassium in a weight ratio in a range of 4:1 to 4.5:0.5.
Dependencies are inferred from the claim text.