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Large-strain low-drive electric field relaxation and ferroelectric composite lead-free piezoelectric ceramic and preparation method thereof
The invention discloses large-strain low-drive electric field relaxation and ferroelectric composite lead-free piezoelectric ceramic and a preparation method thereof. The method includes: acquiring a component A, (1-x1-y1)Bi0.5Na0.5TiO3-x1Bi0.5K0.5TiO3-y1AgNbO3, wherein 0.16</=x1</=0.22, 0.01</=y1</=0.03; or (1-x2-y2)Bi0.5Na0.5TiO3-x2BaTiO3-y2AgNbO3, wherein 5</=x2</=0.07, 0.01</=y2</=0.03; and a component B, (1-z)Bi0.5Na0.5TiO3-zBaTiO3, wherein 0.05</=z</=0.07; or (1-w)Bi0.5Na0.5TiO3-wBi0.5K0.5TiO3, wherein 0.16</=w</=0.22; after drying, heating, pre-sintering, ball-milling and drying, pre-sintering each component for 3 hours; after grinding, mixing ferroelectric lead-free ceramic B and relaxation lead-free piezoelectric ceramic B, performing ball-milling for 4 hours, and performing PVA granulating, dry-pressing forming, sintering and polishing to obtain the composite lead-free piezoelectric ceramic. The performance is improved, production technical difficulty is lowered, and cost is lowered.
Large-strain low-drive electric field relaxation and ferroelectric composite lead-free piezoelectric ceramic and preparation method thereof
The invention discloses large-strain low-drive electric field relaxation and ferroelectric composite lead-free piezoelectric ceramic and a preparation method thereof. The method includes: acquiring a component A, (1-x1-y1)Bi0.5Na0.5TiO3-x1Bi0.5K0.5TiO3-y1AgNbO3, wherein 0.16</=x1</=0.22, 0.01</=y1</=0.03; or (1-x2-y2)Bi0.5Na0.5TiO3-x2BaTiO3-y2AgNbO3, wherein 5</=x2</=0.07, 0.01</=y2</=0.03; and a component B, (1-z)Bi0.5Na0.5TiO3-zBaTiO3, wherein 0.05</=z</=0.07; or (1-w)Bi0.5Na0.5TiO3-wBi0.5K0.5TiO3, wherein 0.16</=w</=0.22; after drying, heating, pre-sintering, ball-milling and drying, pre-sintering each component for 3 hours; after grinding, mixing ferroelectric lead-free ceramic B and relaxation lead-free piezoelectric ceramic B, performing ball-milling for 4 hours, and performing PVA granulating, dry-pressing forming, sintering and polishing to obtain the composite lead-free piezoelectric ceramic. The performance is improved, production technical difficulty is lowered, and cost is lowered.
Large-strain low-drive electric field relaxation and ferroelectric composite lead-free piezoelectric ceramic and preparation method thereof
ZHANG HAIBO (author)
2015-12-30
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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