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Method for preparing lead magnesium niobate-lead titanate thick film

A technology of lead magnesium niobate and lead titanate is applied in the field of thick film preparation, which can solve the problems of poor surface compactness of lead magnesium niobate-lead titanate thick film, and achieve the effect of improving surface compactness

Inactive Publication Date: 2010-07-28
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortage of poor surface compactness of the lead magnesium niobate-lead titanate thick film prepared by the prior art method, the present invention provides a preparation method of the lead magnesium niobate-lead titanate thick film, which uses electrophoretic deposition to prepare magnesium niobate Lead acid-lead titanate thick film can improve Si 3 N 4 -SiO 2 Surface Density of Composite Ceramics

Method used

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  • Method for preparing lead magnesium niobate-lead titanate thick film
  • Method for preparing lead magnesium niobate-lead titanate thick film
  • Method for preparing lead magnesium niobate-lead titanate thick film

Examples

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Embodiment 1

[0019] Example 1: Magnesium nitrate hexahydrate was dissolved in deionized water, niobium pentoxide powder was added to its aqueous solution, the mixture was subjected to ultrasonic vibration for 10 minutes and then stirred for 30 minutes to obtain a uniformly mixed suspension; slowly dropwise into the suspension to dilute The pH value of the ammonia water was adjusted to 9, the magnesium hydroxide in the solution was precipitated and adsorbed on the niobium pentoxide particles, and the stirring was continued for 30min; lead oxide powder was added to the solution, and an appropriate amount of titanium dioxide was added according to the stoichiometric ratio. Continue to stir for 60 min and then dry by rotary evaporation; the obtained pale yellow powder is ball-milled with acetone as a medium for 20 h and then dried; the obtained powder is calcined at 500 °C for 3 h; (1-x)Pb( Mg 1 / 3 Nb 2 / 3 )O 3 -xPbTiO3 powder is used as raw material, anhydrous ethanol is used as solvent, plat...

Embodiment 2

[0020] Example 2, magnesium nitrate hexahydrate was dissolved in deionized water, niobium pentoxide powder was added to its aqueous solution, and the mixture was subjected to ultrasonic vibration for 5 minutes and then stirred for 20 minutes to obtain a uniformly mixed suspension; in the suspension, slowly drip into the diluted solution The pH value of the ammonia water was adjusted to 8, the magnesium hydroxide in the solution was precipitated and adsorbed on the niobium pentoxide particles, and the stirring was continued for 20 min; the lead oxide powder was added to the solution, and an appropriate amount of titanium dioxide was added according to the stoichiometric ratio. Continue to stir for 50 min and then dry by rotary evaporation; the obtained pale yellow powder is ball-milled with acetone as a medium for 18 h and then dried; the obtained powder is calcined at 400 °C for 1 h; (1-x)Pb( Mg 1 / 3 Nb 2 / 3 )O 3 -xPbTiO 3 Powder is used as raw material, anhydrous ethanol is ...

Embodiment 3

[0021] Example 3, magnesium nitrate hexahydrate was dissolved in deionized water, niobium pentoxide powder was added to its aqueous solution, and the mixture was subjected to ultrasonic vibration for 20 minutes and then stirred for 50 minutes to obtain a uniformly mixed suspension; in the suspension, slowly dropwise to dilute The pH value of the ammonia water was adjusted to 12, the magnesium hydroxide in the solution was precipitated and adsorbed on the niobium pentoxide particles, and the stirring was continued for 40 min; then lead oxide powder was added to the solution, and an appropriate amount of titanium dioxide was added according to the stoichiometric ratio. Continue to stir for 80 min and then dry by rotary evaporation; the obtained pale yellow powder is ball-milled with acetone as a medium for 24 h and then dried; the obtained powder is calcined at 900 °C for 1 h; (1-x)Pb( Mg 1 / 3 Nb 2 / 3 )O 3 -xPbTiO3 powder is used as raw material, anhydrous ethanol is used as sol...

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Abstract

The invention discloses a method for preparing a lead magnesium niobate-lead titanate thick film to solve the technical problem of poor surface compactness of the lead magnesium niobate-lead titanate thick film prepared by the preparation method in the prior art. The invention adopts a technical scheme that: the method comprises the following steps: blending materials according to (1-x)Pb(Mg1 / 3Nb2 / 3)O3-xPbTiO3 to prepare (1-x)Pb(Mg1 / 3Nb2 / 3)O3-xPbTiO3 powder; after the thick film is prepared from the powder through electrophoretic deposition, naturally drying the thick film; and preparing a layer of lead oxide surface sol-gel film by using a spinning method, or sintering at high temperature in lead-rich atmosphere after cold isostatic pressing treatment so as to obtain the lead magnesium niobate-lead titanate thick film. Because the lead magnesium niobate-lead titanate thick film is prepared by adopting the electrophoretic deposition method, the surface compactness of Si3O4-SiO2 duplex ceramic is improved.

Description

technical field [0001] The invention relates to a method for preparing a thick film, in particular to a method for preparing a lead magnesium niobate-lead titanate thick film. Background technique [0002] The lead magnesium niobate-based relaxor ferroelectric thin / thick film materials are prepared by physical and chemical methods. For the preparation of thick films, casting method and screen printing method are widely used to prepare thick film materials. The lead magnesium niobate-lead titanate thick film basically adopts these two methods. In the preparation of these two methods, the initial thick film needs to be sintered to obtain a dense thick film and good electrical properties. [0003] The document "S.Gentil, D.Damjanovic, N.Setter.Development of Relaxor FerroelectricMaterials for Screen-printing on Alumina and Silicon Substrates.J.Europ.Ceram.Soc.2005, 25:2125-2128" discloses a screen The printing method is used to prepare ceramic samples at a high temperature of ...

Claims

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Application Information

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IPC IPC(8): C25D13/02C25D13/22C04B35/495
Inventor 樊慧庆陈晋
Owner NORTHWESTERN POLYTECHNICAL UNIV
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