PIEZOELECTRIC CERAMIC COMPOSITION

PIEZOELECTRIC CERAMIC COMPOSITION

PROBLEM TO BE SOLVED: To obtain a piezoelectric ceramic composition with large amount of piezoelectric displacement especially under high electric field intensity, with small temperature change of a dielectric constant, also excellent in insulation property, and capable of sintering at a low tempera...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MAMIYA YOICHI, ISE OSAMU
Format: Patent
Sprache:eng
Schlagworte:
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
ELECTRICITY
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Zusammenfassung:PROBLEM TO BE SOLVED: To obtain a piezoelectric ceramic composition with large amount of piezoelectric displacement especially under high electric field intensity, with small temperature change of a dielectric constant, also excellent in insulation property, and capable of sintering at a low temperature. SOLUTION: The piezoelectric ceramic composition is that, in a three component system lead zirconate titanate(PZT) represented by PbTiO3-PbZrO3-Pb(Ni1/3 Nb2/3)O3 a content of Pb(Ni1/3Nb2/3)O3 is =35 mol% and =15 mol% and =500 pm/V, and the temperature change of the dielectric constant over the range from -40 deg.C to 200 deg.C is