PIEZOELECTRIC CERAMIC COMPOSITION

PURPOSE:To obtain a piezoelectric ceramic composition excellent in heat resistance and secular change resistance, small in mechanical quality factor Qm and large in electromechanical joining factor kp. CONSTITUTION:The piezoelectric ceramic composition has a composition formed by adding and incorpor...

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Bibliographische Detailangaben
1. Verfasser:	OTSU MASASHI
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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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a piezoelectric ceramic composition excellent in heat resistance and secular change resistance, small in mechanical quality factor Qm and large in electromechanical joining factor kp. CONSTITUTION:The piezoelectric ceramic composition has a composition formed by adding and incorporating 0.1-1.0wt.% at least one kind selected from a group of Co, Cr, Cu, Fe, Ni and Bi expressed in terms of Cod, Cr2O3, Cub, Fe2O3, NiO and Bi2O3 as assistant components into the basic composition expressed by a general formula, a(Me2Ta2O7)1/2-(1-a)(Pb(TixZr1-x)O3), in which Me is at least one kind selected from a group of Ca, Sr and Ba and 0.01