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Zn-Ni-Ti microwave media ceramic capable of being sintered at low temperature and having high dielectric constant and preparation method thereof

A technology of microwave dielectric ceramics and high dielectric constant, applied in the direction of ceramics, inorganic insulators, etc., can solve the problems of high energy consumption, high production cost, expensive raw materials, etc., and achieve the effect of reducing production cost and being easy to obtain

Inactive Publication Date: 2009-06-03
西安广芯电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of expensive raw materials, high preparation costs, high energy consumption and low microwave dielectric constant of materials in the background technology

Method used

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  • Zn-Ni-Ti microwave media ceramic capable of being sintered at low temperature and having high dielectric constant and preparation method thereof
  • Zn-Ni-Ti microwave media ceramic capable of being sintered at low temperature and having high dielectric constant and preparation method thereof
  • Zn-Ni-Ti microwave media ceramic capable of being sintered at low temperature and having high dielectric constant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment uses nano TiO 2 And analytically pure ZnO, Nb 2 O 5 , Bi 2 O 3 , V 2 O 5 And CuO, according to 0.1ZnNb 2 O 6 —0.9TiO 2 +aCuO+bBi 2 O 3 +cV 2 O 5 The stoichiometric ratio of ingredients, where a = 5wt%, b = 1wt%, c = 1wt%, a, b, and c account for 0.1ZnNb 2 O 6 —0.9TiO 2 The total weight percentage.

[0027] The preparation steps are:

[0028] (1) Pure ZnO and Nb will be analyzed 2 O 5 Mix and ball mill at a molar ratio of 1:1 for 12 hours, then dry it, put it in an alumina crucible, and calcinate at 1000°C for 4 hours to prepare ZnNb 2 O 6 .

[0029] (2) ZnNb 2 O 6 Add nano-TiO powder according to the material ratio 2 , Bi 2 O 3 , V 2 O 5 And CuO ball milling for 12 hours and drying, the powder is put into an alumina crucible, and calcined at 800°C for 4 hours.

[0030] (3) Ball mill the above-mentioned calcined powder again for 12 hours, and pass it through a 100-mesh screen after drying.

[0031] (4) The above sieved powder is added to the aqueous solution ...

Embodiment 2

[0036] Nano TiO 2 And analytically pure ZnO, Nb 2 O 5 , Bi 2 O 3 , V 2 O 5 And CuO, press 0.28ZnNb 2 O 6 —0.72TiO 2 +aCuO+bBi 2 O 3 +cV 2 O 5 The stoichiometric ratio of ingredients, where a = 5wt%, b = 1wt%, c = 1wt%, a, b, and c account for 0.28ZnNb 2 O 6 —0.72TiO 2 The total weight percentage.

[0037] The preparation steps are:

[0038] (1) Pure ZnO and Nb will be analyzed 2 O 5 Mix and ball mill at a molar ratio of 1:1 for 12 hours, then dry, put in an alumina crucible, and calcinate at 1000°C for 4 hours to prepare ZnNb 2 O 6 .

[0039] (2) ZnNb 2 O 6 Add nano-TiO powder according to the material ratio 2 , Bi 2 O 3 , V 2 O 5 And CuO ball milling and drying for 12 hours, the powder is put into an alumina crucible, and calcined at 750°C for 4 hours.

[0040] (3) Ball mill the above-mentioned calcined powder again for 12 hours, and pass it through a 100-mesh screen after drying.

[0041] (4) The above sieved powder is added to the aqueous solution of polyvinyl alcohol binder fo...

Embodiment 3

[0046] Nano TiO 2 And analytically pure ZnO, Nb 2 O 5 , V 2 O 5 And CuO, press 0.26ZnNb 2 O 6 —0.74TiO 2 +aCuO+cV 2 O 5 The stoichiometric ratio of ingredients, where a=2.5wt%, c=1wt%, a and c account for 0.26ZnNb 2 O 6 —0.74TiO 2 The total weight percentage.

[0047] The preparation steps are:

[0048] (1) Pure ZnO and Nb will be analyzed 2 O 5 Mix and ball mill at a molar ratio of 1:1 for 12 hours, then dry, put in an alumina crucible, and calcinate at 1000°C for 4 hours to prepare ZnNb 2 O 6 .

[0049] (2) ZnNb 2 O 6 Add nano-TiO powder according to the material ratio 2 , V 2 O 5 And CuO ball milling for 12 hours and drying, the powder is put into an alumina crucible, and calcined at 800°C for 4 hours.

[0050] (3) Ball mill the above-mentioned calcined powder again for 12 hours, and pass it through a 100-mesh screen after drying.

[0051] (4) The above sieved powder is added to the aqueous solution of polyvinyl alcohol binder for granulation to produce 200 micron particles, wh...

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Abstract

The invention relates to Zn-Ni-Ti microwave media ceramic capable of being sintered at low temperature and having high dielectric constant, and the preparation method thereof, wherein, the microwave media ceramic material is as follows: xZnNb2O6- yTiO2+awt% of CuO+bwt% of Bi2O3+cwt% of V2O5; and the preparation method comprises the following steps: ball milling and mixing compound powder ZnNb2O6 and nano TiO2, V2O5, Bi2O3 and CuO; drying; calcining; ball milling; sieving; granulating; and batching out and sintering to obtain the microwave media ceramic material. The invention has the advantages that the preparation process is stable; the reproducibility is good; porcelain can be sintered at a temperature which is lower than or equal to 900 DEG C; and an excellent microwave dielectric property, dielectric constant as high as 50 to 85 and high Q multiply f value (more than 6,000 GHz) is provided, therefore, the invention is suitable for fabricating multilayer microwave frequency devices such as chip high-frequency capacitors, chip dielectric resonators, filters, antennas and the like.

Description

Technical field [0001] The invention relates to the field of microwave dielectric ceramic materials in materials science, in particular to a high-dielectric constant zinc-niobium-titanium microwave dielectric ceramic that can be sintered at a low temperature and a preparation method thereof. Background technique [0002] Microwave dielectric ceramics refer to ceramic materials that are used as dielectric materials in microwave frequency circuits and perform one or more functions. They are suitable for making various microwave devices, such as electronic countermeasures, navigation, communications, radar, and home satellite live TV receivers. Frequency stabilized resonators, filters and frequency discriminators in mobile phones and other equipment can also be used as carriers of microwave circuits, dielectric antennas, dielectric waveguide circuits, etc. With the rapid development of mobile communication and satellite communication technology, communication terminals will develop ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/46C04B35/622H01B3/12
Inventor 高峰吴昌英张丽娜李军
Owner 西安广芯电子科技有限公司
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