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Method for fine synthesis of Ba(Zn1/3Nb2/3)O3 dielectric ceramic nano-powder through utilizing water-soluble sol-gel method

A technology of sol-gel and dielectric ceramics, which is applied in the field of finely synthesizing BaO3 dielectric ceramic nano-precursor powders by using wet chemical technology, which can solve the problems of synthesis difficulties and achieve good repeatability, low synthesis temperature, and energy-saving effects

Inactive Publication Date: 2015-05-13
JINAN WEIBO NEW MATERIAL
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is based on the future LTCC (Low Temperature Co-fired Ceramic) low temperature co-fired ceramic technology application requirements, to overcome the shortcomings of traditional solid-phase synthesis difficulties; to provide a finely synthesized Ba(Zn 1 / 3 Nb 2 / 3 )O 3 Dielectric ceramic nano-precursor powder method, using sol-gel method to finely synthesize Ba(Zn 1 / 3 Nb 2 / 3 )O 3 Ceramic powder has significant advantages such as low synthesis temperature, uniform ceramic particles (less than 100nm), good dispersion, pure phase, nano-particle size and high specific surface energy, showing high activity, etc., and can realize subsequent Low temperature sintering is expected to provide new candidate materials to meet the needs of LTCC applications

Method used

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  • Method for fine synthesis of Ba(Zn1/3Nb2/3)O3 dielectric ceramic nano-powder through utilizing water-soluble sol-gel method
  • Method for fine synthesis of Ba(Zn1/3Nb2/3)O3 dielectric ceramic nano-powder through utilizing water-soluble sol-gel method
  • Method for fine synthesis of Ba(Zn1/3Nb2/3)O3 dielectric ceramic nano-powder through utilizing water-soluble sol-gel method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] according to figure 1 Preparation of Ba(Zn 1 / 3 Nb 2 / 3 )O 3 The process flow chart of ceramic nano-precursor powder has the following steps:

[0035] (1) prepare the citric acid aqueous solution of Zn, Ba ion

[0036] (a) According to Ba(Zn 1 / 3 Nb 2 / 3 )O 3 For the stoichiometric ratio of the ceramic phase, adjust the molar ratio of Ba / Zn / Nb elements to 3 / 1+x / 2, where x is: 03 ) 2 .6H 2 A total of 2.9749 grams of O, Ba(NO 3 ) 2 A total of 7.8405 grams, dissolved in 200ml of ionized water, magnetically stirred to form a colorless and transparent solution;

[0037] (b) take by weighing 34.58 grams of citric acid, add in the above-mentioned solution and stir, impel citric acid to form a complex with Zn, Ba ion, make colorless transparent Zn, Ba ion citric acid aqueous solution;

[0038] (2) prepare the citric acid aqueous solution of Nb

[0039] (a) According to Ba(Zn 1 / 3 Nb 2 / 3 )O 3 For the stoichiometric ratio of the ceramic phase, 5.316 grams of niobium oxi...

Embodiment 2

[0048] according to figure 1 Preparation of Ba(Zn 1 / 3 Nb 2 / 3 )O 3 The process flow chart of ceramic nano-precursor powder has the following steps:

[0049] (1) prepare the citric acid aqueous solution of Zn, Ba ion

[0050] (a) According to Ba(Zn 1 / 3 Nb 2 / 3 )O 3 For the stoichiometric ratio of the ceramic phase, adjust the molar ratio of Ba / Zn / Nb elements to 3 / 1+x / 2, where x is: 03 ) 2 .6H 2 A total of 5.9498 grams of O, Ba(NO 3 ) 2 A total of 15.681 grams, dissolved in 200ml of ionized water, magnetically stirred to form a colorless and transparent solution;

[0051] (b) take by weighing 38.428 grams of citric acid, add in the above-mentioned solution and stir, impel citric acid to form a complex with Zn, Ba ion, make colorless transparent Zn, Ba ion citric acid aqueous solution;

[0052] (2) prepare the citric acid aqueous solution of Nb

[0053] (a) According to Ba(Zn 1 / 3 Nb 2 / 3 )O 3 For the stoichiometric ratio of the ceramic phase, weigh 2.987 grams of niob...

Embodiment 3

[0062] (1) prepare the citric acid aqueous solution of Zn, Ba ion

[0063] (a) According to Ba(Zn 1 / 3 Nb 2 / 3 )O 3 For the stoichiometric ratio of the ceramic phase, adjust the molar ratio of Ba / Zn / Nb elements to 3 / 1+x / 2, where x is: 03 ) 2 .6H 2 A total of 8.9247 grams of O, Ba(NO 3 ) 2 A total of 23.5215 grams, dissolved in 200ml of ionized water, magnetically stirred to form a colorless and transparent solution;

[0064] (b) take by weighing 96.07 grams of citric acid, add in the above-mentioned solution and stir, impel citric acid and Zn ion to form complex, make colorless transparent Zn ion citric acid aqueous solution;

[0065] (2) prepare the citric acid aqueous solution of Nb

[0066] (a) According to Ba(Zn 1 / 3 Nb 2 / 3 )O 3 For the stoichiometric ratio of the ceramic phase, weigh 4.4805 grams of niobium oxide, place them in a ceramic medium reactor, add 80ml of hydrofluoric acid, seal it, and then use an oven for high temperature 130°C hydrothermal treatment fo...

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Abstract

The invention belongs to the technical field of electronic ceramic preparation and application, and discloses a method for fine synthesis of Ba(Zn1 / 3Nb2 / 3)O3 dielectric ceramic nano-powder through utilizing the sol-gel method. The method for fine synthesis of Ba(Zn1 / 3Nb2 / 3)O3 dielectric ceramic nano-powder includes the following steps: (1), preparing a citric acid water solution with Zn and Ba ions; (2), preparing a citric acid water solution with Nb ions; (3) synthesizing Ba(Zn1 / 3Nb2 / 3)O3 ceramic nanometer precursor. According to the invention, oxides and inorganic nitrate with lower price are used as raw materials, so that expensive metal alkoxide is not used, the synthesized powder is low in synthesis temperature, uniform in ceramic particles, good in dispersity and pure in phase, fine doping modification of various elements can be implemented easily; the obtained powder has the remarkable advantages of the nano particle size lower than 100 nm, high specific surface energy, higher activity, and the like, follow-up low temperature sintering is realized, and the LTCC application requirements are expected to be met.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of electronic ceramics, in particular to a method for finely synthesizing Ba(Zn 1 / 3 Nb 2 / 3 )O 3 Dielectric ceramic nano precursor powder method. Background technique [0002] In recent years, with the rapid development of the microwave communication industry, the demand for miniaturized and high-performance microwave circuits and microwave devices is increasing in the fields of mobile communications, car phones, TV satellites, military radars, global positioning systems, and portable phones. This requires the continuous development of new materials with more superior properties. The frequency of the microwave signal is extremely high, the wavelength is extremely short, the information capacity is large, and it has strong directionality, penetration and absorption ability, and microwave equipment can realize the confidentiality of communication, which is beneficial to the app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/495C04B35/624C04B35/626
Inventor 吴海涛
Owner JINAN WEIBO NEW MATERIAL
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