A method for improving the quality and yield of flaky barium titanate template

A technology of flaky barium titanate and barium titanate, which is applied in the direction of titanate, alkaline earth metal titanate, chemical instruments and methods, etc., can solve the problems of low product quality and low output, achieve short reaction time, improve The effect of quality and yield, slight degree of corrosion

Active Publication Date: 2021-09-07
SHAANXI COAL & CHEM TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a method for improving the quality and yield of the flaky barium titanate template, which solves the defects of low quality and low yield of the products produced by the existing flaky barium titanate powder preparation method

Method used

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  • A method for improving the quality and yield of flaky barium titanate template
  • A method for improving the quality and yield of flaky barium titanate template
  • A method for improving the quality and yield of flaky barium titanate template

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Embodiment 1

[0060] A method for improving the quality and yield of a sheet barium titanate template provided by the present embodiment comprises the following steps:

[0061] Step 1: Weigh a certain mass of Bi according to the stoichiometric ratio 2 O 3 (99.9% purity) and TiO 2 (purity 99.99%), in addition, take a certain amount of NaCl (purity 99.9%) and KCl (purity 99.9%), wherein the molar ratio of NaCl and KCl is 1:1, and the mass ratio of molten salt and reactant is 2: 1.

[0062] Step 2, using anhydrous ethanol as a medium, the material is placed in a nylon ball milling tank equipped with zirconia balls for ball milling for 8 hours, wherein the mass specific gravity of the ball material is 2:1, and the ball-milled material is dried at 100 ° C for use.

[0063] In step 3, the dried material is placed in a corundum crucible, and is kept in a high temperature environment of 1150 ° C for 4 hours to carry out the synthesis reaction, and finally Bi is synthesized. 4 Ti 3 O 12 .

[...

Embodiment 2

[0073] A method for improving the quality and yield of a sheet barium titanate template provided by the present embodiment comprises the following steps:

[0074] Step 1: Weigh a certain mass of Bi according to the stoichiometric ratio 2 O 3 (99.9% purity) and TiO 2 (purity 99.99%), in addition weigh a certain amount of NaCl (99.9%) and KCl (purity 99.9%), wherein the molar ratio of NaCl to KCl is 1:1, and the mass ratio of molten salt to reactant is 2:1 .

[0075] Step 2, using anhydrous ethanol as the medium, the material is ball-milled for 8h in a nylon ball-milling tank equipped with zirconia balls, wherein the mass specific gravity of the ball material is 2:1, and the ball-milled material is dried in an oven at 100°C spare.

[0076] In step 3, the dried material is placed in a corundum crucible, and is kept in a high temperature environment of 1150 ° C for 4 hours to carry out the synthesis reaction, and finally Bi is synthesized. 4 Ti 3 O 12 .

[0077] Step 4. We...

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Abstract

A method for improving the quality and output of sheet-shaped barium titanate templates provided by the present invention comprises the following steps: step 1, weighing Bi according to the molar ratio of 1:(3-15) 4 Ti 3 o 12 Powder and BaCO 3 The powders are mixed to prepare a mixture containing barium titanate products; step 2, the obtained mixture containing barium titanate products is sequentially washed with deionized water, dilute hydrochloric acid, concentrated ammonium salt, and deionized water until the obtained No Ba in the product 2+ ; Step 3, drying the product obtained in step 2, then adding organic reagents to carry out stirring and cleaning to remove bismuth salts, then drying to finally obtain pure flaky BaTiO 3 powder; the method of the present invention can not only ensure that the flaky barium titanate powder is not subject to corrosion and maintain the original shape, but also can effectively increase the output of the barium titanate powder.

Description

technical field [0001] The invention belongs to the field of electronic materials and devices, and particularly relates to a preparation method for improving the quality and yield of flake barium titanate powder. Background technique [0002] In recent years, in order to meet the development needs of equipment miniaturization and light weight, it has become an inevitable development trend to improve the piezoelectric properties of ceramics by textured ceramics. The methods of piezoelectric ceramic texture generally include heat treatment technology, template grain growth method and reaction template grain growth method, multilayer grain growth method, directional solidification method and non-equiaxed particle orientation solidification method. At present, the more mature method of ceramic texture is the template grain growth method. Barium titanate is recognized as an ideal texture template because of its obvious advantages. [0003] The current method for preparing flaky...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00
CPCC01G23/006C01P2002/72C01P2004/03C01P2004/20
Inventor 王明文李飞杨帅周文龙李景雷徐卓
Owner SHAANXI COAL & CHEM TECH INST
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