DIELECTRIC CERAMIC COMPOSITION AND ELECTRONIC COMPONENT

• Main Authors: WATANABE MATSUMI, OTSU DAISUKE
• Format: Patent
• Language: English; Japanese
• Published: 06.10.2016
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CABLES; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONDUCTORS; ELECTRICITY; INSULATORS; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SLAG; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a dielectric ceramic composition which has high specific dielectric constant and AC breakdown voltage, low dielectric loss and good temperature characteristics and sinterability.SOLUTION: There is provided a dielectric ceramic composition which comprises first main composition particles represented by the composition formula: Ba,Ca,A1)(Ti,Zr,B1)O(x≠0,z≠0,x+y≠1,z+a≠1) and second main composition particles represented by the composition formula: (Ba,A2)(Ti,B2)O(α≠1,β≠1), wherein the first main composition particles have an average particle diameter of 3 to 10 μm, the second main composition particles have an average particle diameter of 0.1 to 3 μm and zinc oxide is segregated.SELECTED DRAWING: Figure 6 【課題】比誘電率および交流破壊電圧が高く、誘電損失が低く、温度特性および焼結性が良好な誘電体磁器組成物を提供する。【解決手段】組成式（Ｂａ１−ｘ−ｙ，Ｃａｘ，Ａ１ｙ）ｍ（Ｔｉ１−ｚ−ａ，Ｚｒｚ，Ｂ１ａ）Ｏ３（ｘ≠０、ｚ≠０、ｘ＋ｙ≠１、ｚ＋ａ≠１）で表される第１主組成物粒子と、組成式（Ｂａ１−α，Ａ２α）ｎ（Ｔｉ１−β，Ｂ２β）Ｏ３（α≠１、β≠１）で表わされる第２主組成物粒子と、を有する誘電体磁器組成物である。第１主組成物粒子の平均粒径が３μｍ〜１０μｍであり、第２主組成物粒子の平均粒径が０．１μｍ〜３μｍであり、さらに酸化亜鉛が偏析している。【選択図】図６