Method for preparing perovskite structure Pb1-xSnxTiO3 ceramic powder

A technology of perovskite structure and ceramic powder is applied in the field of preparing perovskite structure Pb1-xSnxTiO3 ceramic powder, which can solve the problems of easy occurrence of impurity phase, unsatisfactory particle size distribution, insufficient powder purity, etc., and achieves short reaction time. , Inhibition of PbSnO3, the effect of simple process flow

Active Publication Date: 2018-02-02
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

However, according to the conventional hydrothermal reaction method to synthesize Pb 1-x sn x TiO 3 For perovskite powder, impurity phases are prone to appear during the reaction process, and the particle size distribution is not ideal, so that the purity of the final powder is not enough

Method used

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  • Method for preparing perovskite structure Pb1-xSnxTiO3 ceramic powder
  • Method for preparing perovskite structure Pb1-xSnxTiO3 ceramic powder
  • Method for preparing perovskite structure Pb1-xSnxTiO3 ceramic powder

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Embodiment 1

[0027] A kind of preparation perovskite structure Pb 0.85 sn 0.15 TiO 3 The method for ceramic powder, comprising the following steps:

[0028] (1) The preparation of mineralizer solution: preparation concentration is the KOH solution of 2.5mol / L;

[0029] (2) Preparation of raw materials: according to the chemical formula Pb 0.85 sn 0.15 TiO 3 , weigh titanium oxide, stannous chloride and lead oxide for batching, mix the weighed raw materials to form perovskite ceramic particles, and prepare a solvent with a volume ratio of 95% ethanol and deionized water at a volume ratio of 2.5:1 , adding the above-mentioned solvent to the perovskite ceramic particles, the amount of the solvent is at least submerged in the perovskite ceramic particles, and the raw materials are mixed uniformly by magnetic stirring to obtain a mixed solution;

[0030] (3) Preparing the precursor solution: heating the mineralizer obtained in step (1) and the mixed solution obtained in step (2) to 75° C....

Embodiment 2

[0034] A kind of preparation perovskite structure Pb 0.9 sn 0.1 TiO 3 The method for ceramic powder, comprising the following steps:

[0035] (1) preparation of mineralizer solution: preparation concentration is the hydrochloric acid solution of 5mol / L;

[0036] (2) Preparation of raw materials: according to the chemical formula Pb 0.9 sn 0.1 TiO 3 , weigh lead nitrate, 2-ethylhexanoic acid stannous, butyl titanate for batching, mix the weighed raw materials to form perovskite ceramic particles, the volume ratio of ethanol and deionized water is 95% by volume Prepare a solvent for 2.5:1, add the above-mentioned solvent to the perovskite ceramic particles, the amount of the solvent is at least submerged in the perovskite ceramic particles, and mix the raw materials evenly by magnetic stirring to obtain a mixed solution;

[0037] (3) Preparing the precursor solution: heating the mineralizer obtained in step (1) and the mixed solution obtained in step (2) to 80° C., and the...

Embodiment 3

[0041] A kind of preparation perovskite structure Pb 0.4 sn 0.6 TiO 3 The method for ceramic powder, comprising the following steps:

[0042] (1) preparation of mineralizer solution: preparation concentration is the nitric acid solution of 1.2mol / L;

[0043] (2) Preparation of raw materials: according to the chemical formula Pb 0.4 sn 0.6 TiO 3 , weigh titanium oxide, tin sulfide, and lead oxide for batching, mix the raw materials weighed to form perovskite ceramic particles, and prepare a solvent with a volume ratio of 95% ethanol and deionized water as 2.5:1 to The above-mentioned solvent is added to the perovskite ceramic particles, the amount of the solvent is at least submerged in the perovskite ceramic particles, and the raw materials are mixed evenly by magnetic stirring to obtain a mixed solution;

[0044] (3) Preparing the precursor solution: heating the mineralizer obtained in step (1) and the mixed solution obtained in step (2) to 80° C., and then adding the m...

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Abstract

The invention provides a method for preparing perovskite structure Pb1-xSnxTiO3 ceramic powder, and belongs to the technical field of the piezoelectric ceramics material preparation. The method comprises the following steps: (1) preparing mineralizer solution; (2) preparing raw materials: according to a chemical formula of Pb1-xSnxTiO3, wherein x is greater than or equal to 0.05, and x is less than or equal to 0.6, compounding and adding a solvent to prepare mixed solution; (3) preparing precursor heating the mineralizer and the mixed solution to be 75-80 DEG C, and mixing; (4) hydro-thermal synthesis: in a high-temperature high-pressure resistant reaction kettle, firstly keeping the temperature for 2-3 hours in 240-250 DEG C; and cooling to be 160-180 DEG C, keeping the temperature for 3-5 hours, and adequately reacting; and (5) filtering and drying to obtain the Pb1-xSnxTiO3 ceramic powder. The Pb1-xSnxTiO3 ceramic powder prepared by the method has the characteristics of high purity,good crystallinity, uniform granularity distribution, and good reproductibility.

Description

【Technical field】 [0001] The invention relates to the technical field of preparation of piezoelectric ceramic materials, in particular to a method for preparing Pb with a perovskite structure. 1- x sn x TiO 3 method of ceramic powder. 【Background technique】 [0002] Perovskite lead-based piezoelectric ceramic materials have high dielectric constant and quality factor, good temperature stability, and low dielectric loss. They are prepared as piezoelectric elements, such as transducers and micro-displacers , sensors, resonators and filters and other fields of important materials. However, with the strengthening of environmental protection, lead-based piezoelectric ceramic materials will be gradually replaced by lead-free piezoelectric ceramics, but because of their excellent performance, there are still many challenges to find a perfect substitute. Pb provided by the present invention 1-x sn x TiO 3 Perovskite powder, 0.05≤x≤0.6, and has excellent piezoelectric propert...

Claims

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Application Information

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IPC IPC(8): C04B35/472C04B35/462C04B35/626
CPCC04B35/462C04B35/472C04B35/626C04B2235/3293
Inventor 刘来君任少凯付威蓝振成
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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