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Method for finely synthesizing ternary ZnO-Nb2O5-TiO2 microwave dielectric ceramics by wet chemical process

A technology of zno-nb2o5-tio2 and microwave dielectric ceramics, which is applied in the field of preparation and application of electronic ceramics, can solve the problems of large particle size of temperature-synthesized powders and unfavorable ceramic sintering, and achieve high specific surface energy, stable phase and single, synthetic The effect of low temperature

Inactive Publication Date: 2012-11-14
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is based on the application requirements of LTCC low-temperature co-fired ceramic technology in the future, to overcome the shortcomings of traditional solid-phase synthesis powder with high temperature and large particle size of synthetic powder, which is not conducive to subsequent ceramic sintering; it provides a method using wet chemical method Fine Synthesis of Ternary ZnO-Nb 2 o 5 -TiO 2 Systematic microwave dielectric ceramic method, using wet chemical method to finely synthesize ZnTiNb 2 o 8 Ceramic powder has significant advantages such as low synthesis temperature, uniform ceramic particles, good dispersion, pure phase, nano-particle size, high specific surface energy, and high activity. It can achieve low-temperature sintering and maintain its Good microwave dielectric properties, meeting the requirements of LTCC applications

Method used

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  • Method for finely synthesizing ternary ZnO-Nb2O5-TiO2 microwave dielectric ceramics by wet chemical process
  • Method for finely synthesizing ternary ZnO-Nb2O5-TiO2 microwave dielectric ceramics by wet chemical process
  • Method for finely synthesizing ternary ZnO-Nb2O5-TiO2 microwave dielectric ceramics by wet chemical process

Examples

Experimental program
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Effect test

Embodiment 1

[0036] according to figure 1 Preparation of ZnTiNb by Wet Chemical Process 2 o 8 Ceramic process flow chart, the preparation method of magnesium niobate microwave ceramic powder prepared by wet chemical method has the following steps:

[0037] 1) Preparation of citric acid aqueous solution of Zn ions

[0038] (a) According to ZnTiNb 2 o 8 Stoichiometric ratio of microwave ceramic phases, adjusting ZnO / TiO 2 / Nb 2 o 5 The molar ratio is 1+x / 1 / 1 (03 ) 2 .6H 2 A total of 27.1 grams of O was dissolved in 100ml of ionized water and stirred magnetically to form a colorless and transparent solution;

[0039] (b) take by weighing 85 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;

[0040] 2) Preparation of citric acid aqueous solution of Ti and Nb ions

[0041] (a) According to ZnTiNb 2 o 8 For the stoichiometric ratio of the microwave cerami...

Embodiment 2

[0051] according to figure 1 Preparation of ZnTiNb by Wet Chemical Process 2 o 8 Ceramic process flow chart, the preparation method of magnesium niobate microwave ceramic powder prepared by wet chemical method has the following steps:

[0052] 1) Preparation of citric acid aqueous solution of Zn ions

[0053] (a) According to ZnTiNb 2 o 8 Stoichiometric ratio of microwave ceramic phases, adjusting ZnO / TiO 2 / Nb 2 o 5 The molar ratio is 1+x / 1 / 1 (03 ) 2 .6H 2 A total of 29.8 grams of O was dissolved in 100ml of ionized water and stirred magnetically to form a colorless and transparent solution;

[0054] (b) take by weighing 95 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;

[0055] 2) Preparation of citric acid aqueous solution of Ti and Nb ions

[0056] (a) According to ZnTiNb 2 o 8 For the stoichiometric ratio of the microwave cerami...

Embodiment 3

[0066] according to figure 1 Preparation of ZnTiNb by Wet Chemical Process 2 o 8 Ceramic process flow chart, the preparation method of magnesium niobate microwave ceramic powder prepared by wet chemical method has the following steps:

[0067] 1) Preparation of citric acid aqueous solution of Zn ions

[0068] (a) According to ZnTiNb 2 o 8 Stoichiometric ratio of microwave ceramic phases, adjusting ZnO / TiO 2 / Nb 2 o 5 The molar ratio is 1+x / 1 / 1 (03 ) 2 .6H 2 A total of 29.1 grams of O was dissolved in 100ml of ionized water and magnetically stirred to form a colorless and transparent solution;

[0069] (b) take by weighing 100 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;

[0070] 2) Preparation of citric acid aqueous solution of Ti and Nb ions

[0071] (a) According to ZnTiNb 2 o 8 For the stoichiometric ratio of microwave ceramic p...

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Abstract

The invention belongs to the technical field of preparation and application of electronic ceramics, and particularly relates to a method for finely synthesizing ternary ZnO-Nb2O5-TiO2 microwave dielectric ceramics by a wet chemical process. The technical scheme is as follows: the method comprises the following steps: 1) preparing a Zn ion citric acid water solution; 2) preparing a Ti and Nb ion citric acid water solution; and 3) synthesizing a ternary ZnO-Nb2O5-TiO2 microwave dielectric ceramic precursor, and preparing the ceramics. The invention has the advantages of low synthesis temperature, uniform ceramic particles, favorable dispersity, pure phase, nano particle size of powder, high specific surface energy, high activity and the like, can implement low-temperature sintering, and maintains favorable microwave dielectric properties, thereby satisfying the application requirements for LTCC (low temperature co-fired ceramic).

Description

technical field [0001] The invention belongs to the technical field of preparation and application of electronic ceramics, in particular to a fine synthesis of ternary ZnO-Nb by wet chemical method 2 o 5 -TiO 2 System microwave dielectric ceramic method. Background technique [0002] LTCC (Low Temperature Co-fired Ceramic) low temperature co-fired ceramic technology is a new material technology developed by Hughes Company in 1982. It uses thick film materials, and according to the pre-designed structure, electrode materials, substrates, electronic devices, etc. are once Sexual firing is a technology that can achieve high integration and high performance circuit packaging. Its main application fields 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-electromechanic...

Claims

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Application Information

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IPC IPC(8): C04B35/453C04B35/622
Inventor 吴海涛杨长红武卫兵胡广达杨锋岳云龙
Owner UNIV OF JINAN
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