METHOD FOR PRODUCING BARIUM TITANATE, DIELECTRIC CERAMIC COMPOSITION, AND CERAMIC ELECTRONIC COMPONENT

• Main Authors: NATSUI HIDESADA, TAKANE SUSUMU, NAKAHATA ISAO, MASUZAWA KIYOYUKI
• Format: Patent
• Language: English
• Published: 21.06.2012
• 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; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; CONCRETE; CONDUCTORS; ELECTRICITY; INORGANIC CHEMISTRY; 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 method for producing barium titanate in which fine barium titanate including hexagonal barium titanate is obtained, a dielectric ceramic composition, and a ceramic electronic component.SOLUTION: In the method for producing barium titanate, the barium titanate is produced by firing a raw material containing Ba and Ti at ≥700 and ≤1,000°C in an atmosphere containing steam and air such that the steam is included at ≥200 and ≤5,000 g per 1 mof air and the air is heated at ≥71 and ≤180°C. The hexagonal barium titanate is produced in the barium titanate at a low heat-treatment temperature by firing the raw material containing Ba and Ti at high humidity in an atmosphere including the heated air, and the fine barium titanate including the hexagonal barium titanate is thus produced.