WO2009016860A1 - Dielectric ceramic and laminated ceramic capacitor - Google Patents

Dielectric ceramic and laminated ceramic capacitor Download PDF

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Publication number
WO2009016860A1
WO2009016860A1 PCT/JP2008/056191 JP2008056191W WO2009016860A1 WO 2009016860 A1 WO2009016860 A1 WO 2009016860A1 JP 2008056191 W JP2008056191 W JP 2008056191W WO 2009016860 A1 WO2009016860 A1 WO 2009016860A1
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WO
WIPO (PCT)
Prior art keywords
dielectric ceramic
terms
mole
ceramic
dielectric
Prior art date
Application number
PCT/JP2008/056191
Other languages
French (fr)
Japanese (ja)
Inventor
Yusuke Azuma
Youichi Yamazaki
Daisuke Fukuda
Hideyuki Osuzu
Jyun Ueno
Masaaki Nagoya
Original Assignee
Kyocera Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008044231A external-priority patent/JP5483825B2/en
Application filed by Kyocera Corporation filed Critical Kyocera Corporation
Priority to CN200880100541.4A priority Critical patent/CN101765572B/en
Publication of WO2009016860A1 publication Critical patent/WO2009016860A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/018—Dielectrics
    • H01G4/06—Solid dielectrics
    • H01G4/08—Inorganic dielectrics
    • H01G4/12—Ceramic dielectrics
    • H01G4/1209—Ceramic dielectrics characterised by the ceramic dielectric material
    • H01G4/1218—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates
    • H01G4/1227—Ceramic dielectrics characterised by the ceramic dielectric material based on titanium oxides or titanates based on alkaline earth titanates
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates
    • C04B35/462—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates
    • C04B35/465—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates
    • C04B35/468—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
    • C04B35/4682—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates based on BaTiO3 perovskite phase
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
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    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
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  • Engineering & Computer Science (AREA)
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  • Ceramic Engineering (AREA)
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  • Organic Chemistry (AREA)
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Abstract

[PROBLEMS] To provide a dielectric ceramic, which has high permittivity, has specific permittivity which varies depending upon temperature so as to satisfy X5R characteristics in EIA specifications, and can realize high insulation resistance even in the case of low applied voltage, and a laminated ceramic capacitor which comprises the dielectric ceramic as a dielectric layer and is excellent in service life properties in a high-temperature load test. [MEANS FOR SOLVING PROBLEMS] A dielectric ceramic composed mainly of barium titanate having a different Ca concentration. The dielectric ceramic contains, based on 100 moles of barium constituting the dielectric ceramic, 0.05 to 0.3 mole, in terms of V2O5, of vanadium, 0 to 1 mole, in terms of MgO, of magnesium, 0 to 0.5 mole, in terms of MnO, of manganese, and 0.4 to 1.5 moles, in terms of RE2O3, of a rare earth element (RE) selected from yttrium, dysprosium, holmium, and erbium. In an X-ray diffraction chart of the dielectric ceramic, the diffraction intensity of (004) plane, which shows tetragonal barium titanate, is larger than the diffraction intensity of (400) plane which shows cubic barium titanate.
PCT/JP2008/056191 2007-07-27 2008-03-28 Dielectric ceramic and laminated ceramic capacitor WO2009016860A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200880100541.4A CN101765572B (en) 2007-07-27 2008-03-28 Dielectric ceramic and laminated ceramic capacitor

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2007196077 2007-07-27
JP2007-196077 2007-07-27
JP2007222974 2007-08-29
JP2007-222974 2007-08-29
JP2008-044231 2008-02-26
JP2008044231A JP5483825B2 (en) 2007-07-27 2008-02-26 Dielectric porcelain and multilayer ceramic capacitor

Publications (1)

Publication Number Publication Date
WO2009016860A1 true WO2009016860A1 (en) 2009-02-05

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PCT/JP2008/056191 WO2009016860A1 (en) 2007-07-27 2008-03-28 Dielectric ceramic and laminated ceramic capacitor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012094755A (en) * 2010-10-28 2012-05-17 Kyocera Corp Laminated ceramic capacitor
JP2013043819A (en) * 2011-08-26 2013-03-04 Tdk Corp Dielectric ceramic composition and ceramic electronic component

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0412055A (en) * 1990-04-28 1992-01-16 Kyocera Corp Ceramic composition having high dielectric constant
JPH0831232A (en) * 1994-07-19 1996-02-02 Kyocera Corp Nonreducing dielectric ceramic composition
JP2000026160A (en) * 1998-07-10 2000-01-25 Matsushita Electric Ind Co Ltd Dielectric ceramic composition
JP2001143955A (en) * 1999-09-03 2001-05-25 Murata Mfg Co Ltd Dielectric ceramic composition and laminated ceramic capacitor
JP2006041370A (en) * 2004-07-29 2006-02-09 Kyocera Corp Multilayer ceramic capacitor and manufacturing method thereof
WO2006035576A1 (en) * 2004-09-27 2006-04-06 Matsushita Electric Industrial Co., Ltd. Ceramic capacitor and method for manufacturing same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0412055A (en) * 1990-04-28 1992-01-16 Kyocera Corp Ceramic composition having high dielectric constant
JPH0831232A (en) * 1994-07-19 1996-02-02 Kyocera Corp Nonreducing dielectric ceramic composition
JP2000026160A (en) * 1998-07-10 2000-01-25 Matsushita Electric Ind Co Ltd Dielectric ceramic composition
JP2001143955A (en) * 1999-09-03 2001-05-25 Murata Mfg Co Ltd Dielectric ceramic composition and laminated ceramic capacitor
JP2006041370A (en) * 2004-07-29 2006-02-09 Kyocera Corp Multilayer ceramic capacitor and manufacturing method thereof
WO2006035576A1 (en) * 2004-09-27 2006-04-06 Matsushita Electric Industrial Co., Ltd. Ceramic capacitor and method for manufacturing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012094755A (en) * 2010-10-28 2012-05-17 Kyocera Corp Laminated ceramic capacitor
JP2013043819A (en) * 2011-08-26 2013-03-04 Tdk Corp Dielectric ceramic composition and ceramic electronic component

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