PIEZOELECTRIC PORCELAIN COMPOSITION

PURPOSE:To obtain a piezoelectric porcelain element wherein an electromechanical coupling coefficient and a heat-resisting property are high and a change with the elapse of time small. CONSTITUTION:The composition of piezoelectric porcelain is indicated by a general expression of (Pb1-xMex) [(Mg1/3N...

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Bibliographische Detailangaben
Hauptverfasser:	KANBARA MASAHARU, OTSU MASASHI, YAMANE FUMIKAZU
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F CONCRETE ELECTRICITY INORGANIC CHEMISTRY LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a piezoelectric porcelain element wherein an electromechanical coupling coefficient and a heat-resisting property are high and a change with the elapse of time small. CONSTITUTION:The composition of piezoelectric porcelain is indicated by a general expression of (Pb1-xMex) [(Mg1/3Nb2/3)a-(Yb1/2Nb1/2)bTicZrd]O3 (where Me represents at least one selected from Ba, Sr and Ca and a+b+c+d=1) so as to be 0.95