Method for fast preparing micron-level lamellar barium titanate powder

A micron-scale, flaky technology, applied in chemical instruments and methods, nanotechnology, titanium compounds, etc., can solve the problems of low production efficiency, cumbersome process, difficult process control, etc., and achieve shortened production cycle and obvious flaky characteristics , The effect of reducing the process link
CN102115160BActive Publication Date: 2012-04-25XIAN TECH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN TECH UNIV
Publication Date
2012-04-25

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Abstract

The invention relates to a method for fast preparing micron-level lamellar barium titanate powder. The prior art is complex in technology, long in preparation period, and low in production efficiency. The method sequentially comprises the following steps of: preparing KF-BaTiO3 or BaTiO3 melting body of a hypo eutectic component, and cooling and solidifying the melting body to obtain a solidified tissue; and ultrasonically cleaning the other phases in the solidified tissue to obtain sheet BaTiO3 crystalloid powder. The method specifically comprises the steps: (1) mixing BaCO3 power, TiO2 power with KF power, performing the ball milling by the polytetrafluoroethylene during mixing, performing the polytetrafluoroethylene to the agate, performing the ball milling and mixing for 6 hours with water-free ethanol medium, and drying for later use; (2) heating in a common crucible resistance furnace to be melted to obtain the melting body, and keeping the temperature for 1-4 hours for later use; (3) cooling the melting body to be solidified so as to obtain the solidified tissue; and ultrasonically cleaning to remove the KF and the other impurities in the solidified tissue.
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Description

technical field

[0001] The present invention relates to micron-scale flaky BaTiO 3 The technical field of powder preparation method, in particular, relates to a method for rapidly preparing micron-sized flaky barium titanate powder. Background technique

[0002] Micron flaky BaTiO 3 The powder is very suitable as a seed crystal for the preparation of high-performance textured piezoelectric ceramics by Templated Grain Growth, and has broad application prospects.

[0003] Barium titanate (BaTiO 3 ) powder preparation methods, including co-precipitation method, microemulsion method, citric acid method, oxalate method, hydrothermal method, solution thermal synthesis method, Sol-gel method, metal organic compound pyrolysis method and organic salt-hydroxide However, none of these methods can prepare micron-scale flake BaTiO 3 Powder. At present, at home and abroad, only Tsinghua University and Japan's Keio University have prepared micron-scale flake BaTiO. 3 Powder reports a...

Claims

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