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Preparation method of barium titanate ceramic
The invention discloses a preparation method of a barium titanate ceramic. The preparation method specifically comprises the following steps: adding barium titanate, titanium dioxide, yttrium oxide and anhydrous ethanol into a ball milling tank respectively, and performing ball milling; drying the obtained ball milling material by baking, and performing briquetting, pre-burning, pulverization, re-ball-milling and sieving to obtain Y<3+> ion doped barium titanate powder; and performing compression molding on the Y<3+> ion doped barium titanate powder by virtue of an isostatic pressing technology, and sintering to obtain the barium titanate ceramic. According to the preparation method disclosed by the invention, yttrium oxide is selected as a doping agent, the barium titanate powder with different of Y<3+> ion contents is prepared by adopting a solid-phase synthetic method, and Y<3+> ions are used for substituting lattice strains caused by Ba<2+> and Ti<4+> ions at the same time, so that the problem that the Curie temperature during doping preparation moves towards a low temperature direction, and the Curie temperature of the barium titanate ceramic is effectively improved.
Preparation method of barium titanate ceramic
The invention discloses a preparation method of a barium titanate ceramic. The preparation method specifically comprises the following steps: adding barium titanate, titanium dioxide, yttrium oxide and anhydrous ethanol into a ball milling tank respectively, and performing ball milling; drying the obtained ball milling material by baking, and performing briquetting, pre-burning, pulverization, re-ball-milling and sieving to obtain Y<3+> ion doped barium titanate powder; and performing compression molding on the Y<3+> ion doped barium titanate powder by virtue of an isostatic pressing technology, and sintering to obtain the barium titanate ceramic. According to the preparation method disclosed by the invention, yttrium oxide is selected as a doping agent, the barium titanate powder with different of Y<3+> ion contents is prepared by adopting a solid-phase synthetic method, and Y<3+> ions are used for substituting lattice strains caused by Ba<2+> and Ti<4+> ions at the same time, so that the problem that the Curie temperature during doping preparation moves towards a low temperature direction, and the Curie temperature of the barium titanate ceramic is effectively improved.
Preparation method of barium titanate ceramic
REN PENGRONG (author) / WANG QIAN (author)
2016-02-24
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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