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A kind of barium niobate system microwave dielectric ceramic material and its preparation method and application

A technology of microwave dielectric ceramics and barium niobate, which is applied to ceramics, waveguide devices, electrical components, etc., can solve the problems of high sintering temperature and difficult industrialized production, and achieves lower sintering temperature, improved microwave performance, and good low-temperature sintering performance. Effect

Active Publication Date: 2022-05-27
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the microwave dielectric ceramic material has the problem of high sintering temperature (above 1500°C), and it is not easy to realize industrial production. Therefore, how to realize the low temperature sintering of this material is very important

Method used

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  • A kind of barium niobate system microwave dielectric ceramic material and its preparation method and application
  • A kind of barium niobate system microwave dielectric ceramic material and its preparation method and application
  • A kind of barium niobate system microwave dielectric ceramic material and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The microwave dielectric ceramic material of barium niobate system described in this embodiment, in terms of the total amount of raw materials prepared, includes the following components in mass content:

[0036]

[0037]

[0038] Specifically, the low-melting glass powder includes the following components by weight:

[0039]

[0040] The preparation method of the barium niobate system microwave dielectric ceramic material described in this embodiment includes the following steps:

[0041] (1) According to the selected mass content ratio, weigh the BaCO of the corresponding weight 3 , Nb 2 O 5 , ZnO, CoO, NiO, add water (material: water = 1: 0.4) and ammonium acrylate dispersant (accounting for 0.6 wt% of the powder) and mix well, use a ball mill for pre-mixing for 3h, and after ball milling, Use a horizontal sand mill (1.5mm zirconium balls as the grinding medium) for further dispersion to obtain a uniformly dispersed slurry;

[0042] (2) The dispersed slurr...

Embodiment 2

[0049] The microwave dielectric ceramic material of barium niobate system described in this embodiment, in terms of the total amount of raw materials prepared, includes the following components in mass content:

[0050]

[0051] Specifically, the low-melting glass powder includes the following components by weight:

[0052]

[0053]

[0054] The preparation method of the barium niobate system microwave dielectric ceramic material described in this embodiment includes the following steps:

[0055] (1) According to the selected mass content ratio, weigh the BaCO of the corresponding weight 3 , Nb 2 O 5 , ZnO, CoO, NiO, add water (material: water = 1: 0.6) and ammonium acrylate dispersant (accounting for 0.4 wt% of the powder) and mix well, use a ball mill for pre-mixing for 3h, and after ball milling, Use a horizontal sand mill (1.5mm zirconium balls as the grinding medium) for further dispersion to obtain a uniformly dispersed slurry;

[0056] (2) The dispersed slu...

Embodiment 3

[0063] The microwave dielectric ceramic material of barium niobate system described in this embodiment, in terms of the total amount of raw materials prepared, includes the following components in mass content:

[0064]

[0065] Specifically, the low-melting glass powder includes the following components by weight:

[0066]

[0067] The preparation method of the barium niobate system microwave dielectric ceramic material described in this embodiment includes the following steps:

[0068] (1) According to the selected mass content ratio, weigh the BaCO of the corresponding weight 3 , Nb 2 O 5 , ZnO, CoO, NiO, add water (material: water = 1: 0.5) and ammonium acrylate dispersant (accounting for 0.5wt% of the crystalline phase mixture) and mix well, use a ball mill for pre-mixing for 3h, and in the ball mill Then, use a horizontal sand mill (1.5mm zirconium balls for grinding media) for further dispersion to obtain a uniformly dispersed slurry;

[0069] (2) The disperse...

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Abstract

The invention belongs to the technical field of microwave dielectric ceramic materials, and in particular relates to a barium niobate system microwave dielectric ceramic material. The barium niobate system microwave dielectric ceramic material of the present invention, with BaCO 3 , Nb 2 o 5 , ZnO, CoO and NiO as raw materials to synthesize the main sintered block, and SiO 2 , BaO, CaO, B 2 o 3 , Li 2 O is used as a raw material to synthesize low-melting glass powder, and then the main sinter and the low-melting glass powder are mixed and dispersed to obtain the required barium niobate system microwave dielectric ceramic material. The dielectric constant of the microwave dielectric ceramic material reaches 33-36, f*Q>80000 at 25°C, and the frequency temperature coefficient calculated by testing the resonant frequencies f of -40°C, 25°C, and 110°C is low, only ‑5~5ppm / ℃, its performance meets the requirements of microwave dielectric ceramic devices; at the same time, the material also has good dielectric properties in the millimeter wave frequency band; it can be used to produce ceramic devices such as filters and resonators.

Description

technical field [0001] The invention belongs to the technical field of microwave dielectric ceramic materials, in particular to a microwave dielectric ceramic material of barium niobate system, and further discloses a preparation method and application thereof. Background technique [0002] Microwave dielectric ceramic materials refer to ceramics that are used as dielectric materials in microwave frequency (mainly UHF and SHF frequency bands, 300MHz-300GHz) circuits and perform one or more functions. They have low dielectric loss and low resonant frequency temperature coefficient. It is an important component of resonators, filters, duplexers, antennas, frequency stabilized oscillators, waveguide transmission lines and other devices, and can be widely used in personal portable mobile phones, microwave base stations, car phones, satellite communications, military radar and many other fields. [0003] As we all know, the Ministry of Industry and Information Technology issued ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B3/12C04B35/495C04B35/622C04B35/64C03C12/00H01P1/20H01P7/10H01P11/00
CPCC04B35/495C04B35/622C04B35/64C03C12/00H01P1/2002H01P7/10H01P11/007H01P11/008C04B2235/3215C04B2235/3255C04B2235/3275C04B2235/3279C04B2235/3284C04B2235/365
Inventor 刘光明应红杨月霞杨彬孙秀坤宋锡滨
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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