PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC TRANSFORMER, PIEZOELECTRIC TRANSFORMER INVERTER CIRCUIT, AND PROCESS FOR MANUFACTURING PIEZOELECTRIC CERAMIC COMPOSITION

PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic composition which can be fired at a low temperature of ≤1,000°C and has excellent piezoelectric characteristics and high heat resistance. SOLUTION: The piezoelectric ceramic composition contains a main component expressed by compositional form...

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Bibliographic Details
Main Authors NADA KENICHI, MIWA KYOYA
Format Patent
LanguageEnglish
Published 22.07.2004
Edition7
Subjects
APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
CONTROL OR REGULATION THEREOF
CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRICITY
GENERATION
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic composition which can be fired at a low temperature of ≤1,000°C and has excellent piezoelectric characteristics and high heat resistance. SOLUTION: The piezoelectric ceramic composition contains a main component expressed by compositional formula: Pba(ZrbTicMndNeeSbf)O3+δ (wherein, 0.970≤a≤1.030, 0.440≤b≤0.520, 0.440≤c≤0.520, 0.0083≤d≤0.0233, 0.0067≤e≤0.0333, and 0.0033≤f≤0.0333, b+c+d+e+f=1, and δ=(2a+4b+4c+2d+5e+5f)×0.5-3) and, as sub-components, CuO, MgO and WO3. When the molar amounts of CuO, MgO and WO3per 1 mol of the main component are set to be g mol, h mol, and i mol, respectively, g, h, and i each satisfy following range: 0.0041≤g≤0.0819, 0.0081≤h≤0.0808, and 0.0014≤i≤0.0140. COPYRIGHT: (C)2004,JPO&NCIPI
Bibliography:Application Number: JP20020369800