Method for finely synthesizing ilmenite structure ZnTiO3 nanometer powder by using water-soluble sol-gel process

A technology of sol-gel and sol-gel method, which is applied in the fields of nanotechnology, nanotechnology and nanotechnology for material and surface science, can solve problems such as difficulties in solid-phase synthesis, and achieve a stable and single phase without impurities. The effect of phase interference and high specific surface energy

Inactive Publication Date: 2014-04-09
UNIV OF JINAN
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Problems solved by technology

[0004] The purpose of this invention is to overcome the shortcomings of traditional solid-phase synthesis difficulties based on the application requirements of LTCC (Low Temperature Co-fired Ceramic) low temperature co-fired ceramic technology in the future; A method for finely synthesizing ilmenite structure ZnTiO3 dielectric ceramic nano-precursor powder by sol-gel method, using sol-gel method to finely syn

Method used

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  • Method for finely synthesizing ilmenite structure ZnTiO3 nanometer powder by using water-soluble sol-gel process
  • Method for finely synthesizing ilmenite structure ZnTiO3 nanometer powder by using water-soluble sol-gel process
  • Method for finely synthesizing ilmenite structure ZnTiO3 nanometer powder by using water-soluble sol-gel process

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Embodiment 1

[0032] according to figure 1 Preparation of ZnTiO by Sol-Gel Process 3 The process flow chart of ceramic nano-precursor powder has the following steps:

[0033] 1) Preparation of citric acid aqueous solution of Zn ions

[0034] (a) According to ZnTiO 3 The stoichiometric ratio of the microwave ceramic phase, adjust ZnO (or Zn(NO 3 ) 2 .6H 2 O) / TiO 2 The molar ratio is 1+x / 1 (03 ) 2 .6H 2 A total of 8.9247 grams, dissolved in 200ml of ionized water, magnetically stirred to form a colorless and transparent solution;

[0035] (b) take by weighing 34.58 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;

[0036] 2) Preparation of citric acid aqueous solution of Ti

[0037] (a) According to ZnTiO 3 For the stoichiometric ratio of the microwave ceramic phase, 0.8029 grams of titanium dioxide were weighed, placed in a ceramic medium reactor, seale...

Embodiment 2

[0046] according to figure 1 Preparation of ZnTiO by Sol-Gel Process 3 The process flow chart of ceramic nano-precursor powder has the following steps:

[0047] 1) Preparation of citric acid aqueous solution of Zn ions

[0048] (a) According to the stoichiometric ratio of ZnTiO3 microwave ceramic phase, adjust ZnO / TiO 2 The molar ratio is 1+x / 1 (03 ) 2 .6H 2 A total of 14.8745 grams of O was dissolved in 100ml of ionized water and stirred magnetically to form a colorless and transparent solution;

[0049] (b) take by weighing 38.428 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;

[0050] 2) Preparation of citric acid aqueous solution of Ti

[0051] (a) According to ZnTiO 3 For the stoichiometric ratio of microwave ceramic phases, weigh 1.4935 grams of titanium dioxide, place them in a ceramic medium reactor, add 90ml of hydrofluoric acid, s...

Embodiment 3

[0060] according to figure 1 Preparation of ZnTiO by Sol-Gel Process 3 The process flow chart of ceramic nano-precursor powder has the following steps:

[0061] 1) Preparation of citric acid aqueous solution of Zn ions

[0062] (a) According to ZnTiO 3 Stoichiometric ratio of microwave ceramic phases, adjustment of ZnO / TiO 2 The molar ratio is 1+x / 1 (03 ) 2 .6H 2 A total of 29.747 grams of O was dissolved in 100ml of ionized water and stirred magnetically to form a colorless and transparent solution;

[0063] (b) take by weighing citric acid 96.07 grams, 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;

[0064] 2) Preparation of citric acid aqueous solution of Ti

[0065] (a) According to ZnTiO 3 For the stoichiometric ratio of the microwave ceramic phase, 2.987 grams of titanium dioxide were weighed, placed in a ceramic medium reactor, sealed after adding 80ml o...

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Abstract

The invention belongs to the technical field of electronic ceramic preparation and application, and particularly relates to a method for finely synthesizing ZnO-TiO2 system microwave dielectric ceramic nanometer powder by using a sol-gel method. The technical scheme comprises adopting a water-soluble sol-gel method to finely synthesize ZnO-TiO2 system microwave dielectric ceramic nanometer precursor powder, and specifically comprises: 1) preparing a citric acid aqueous solution of Zn ions; 2) preparing a citric acid aqueous solution of Ti ions; and 3) synthesizing a ZnTiO3 microwave dielectric ceramic nanometer precursor. According to the present invention, the low price oxide and the inorganic nitrate are adopted as the raw materials, use of the expensive metal alkoxide is avoided, and the synthesized powder has significant advantages of low synthesis temperature, uniform ceramic particles, good ceramic particle dispersity, pure phase, easy performing of fine doping modification of various elements, nano-scale powder (particle size of about 30 nm), high specific surface energy, high activity and the like. In addition, the method has the following characteristics that: the subsequent low temperature sintering can be achieved, and the LTCC application requirements can 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 of finely synthesizing ZnTiO with an ilmenite structure using a wet chemical process. 3 Dielectric ceramic nano precursor powder method. Background technique [0002] LTCC low-temperature co-fired ceramic technology is a new material technology developed by Hughes Corporation in 1982. It uses thick film materials, and according to the pre-designed structure, electrode materials, substrates, electronic devices, etc. are fired at one time. High-integration, high-performance circuit packaging technology, its main application areas are: high-frequency wireless communication (such as mobile phones, global satellite positioning systems and Bluetooth technology, etc.), aerospace industry and military fields (such as communication satellites, detection and tracking radar systems, etc.), micro-electromechanical systems and sensing techn...

Claims

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Application Information

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IPC IPC(8): C01G23/00C04B35/462B82Y30/00
Inventor 吴海涛杨长红胡广达
Owner UNIV OF JINAN
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