Alkali metal-containing niobate-based piezoelectric material composition and a method for producing the same
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorYasuyoshi Saito
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Abstract
An alkali metal-containing niobate-based piezoelectric material composition comprises a solid solution represented by a composition formula (ANbO3) (A: alkali metal), and at least one additive selected from Cu, Li and Ta.
Claims9
An alkali-metal containing niobate-based piezoelectric sintering material composition comprising a solid solution represented by a composition formula Lix(K1−YNay)1−x(Nb1−zTaz)O3, wherein x=0.001 to 0.2, y=0 to 0.8, z=0 to 0.4, and at least one additive selected from the group consisting of Cu, Li and Ta.
An alkali metal-containing niobate-based piezoelectric sintering material composition comprising a solid solution represented by a composition formula K1−xNaxNbO3, wherein x=0 to 0.8, and Cu as an additive present in an amount of 0.001 to 5 mol %.
A method for producing an alkali metal-containing niobate-based piezoelectric sintering material composition, comprising:
- adding an additive powder containing at least one element selected from the group consisting of Cu, Li and Ta to a powder of niobate represented by formula ANbO3, wherein A is an alkali metal, then blending these powders together;
- molding said blended powders and sintering the same, and
- treating the resulting sintered substance to impart piezoelectricity thereto,
- wherein said additive powder is 0.001 to 5 mol % of Cu, and the blended powder of a niobate is K1−xNaxNbO3, wherein x=0 to 0.8.
A method for producing an alkali metal-containing niobate-based piezoelectric sintering material composition, comprising:
- adding an additive powder containing at least one element selected from the group consisting of Cu, Li and Ta to a powder of niobate represented by formula ANbO3, wherein A is an alkali metal, then blending these powders together;
- molding said blended powders and sintering the same, and
- treating the resulting sintered substance to impart piezoelectricity thereto,
- wherein the blended powder of a niobate is Lix(K1−yNay)1−x(Nb1−zTaz)O3, wherein x=0.001 to 0.2, y=0 to 0.8, z=0 to 0.4.
A method for producing an alkali metal-containing niobate-based piezoelectric sintering material composition, comprising:
- adding an additive powder containing at least one element selected from the group consisting of Cu, Li, and Ta to a mixture of a powder of precursor compounds for a niobate, then blending these powders together;
- molding said blended powders and sintering the same;
- and
- treating the resulting sintered substance to impart piezoelectricity thereto,
- wherein said blended powder of niobate is Lix(K1−yNay)1−x(Nb1−zTaz)O3, wherein x=0.001 to 0.2, y 0 to 0.8, z=0 to 0.4.
Dependencies are inferred from the claim text.