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Microwave medium ceramic material with low-temperature sintering spinel structure and preparation method thereof

A microwave dielectric ceramic and low-temperature sintering technology is applied in the field of microwave dielectric ceramic materials, low-temperature sintered spinel structure microwave dielectric ceramic materials and their preparation, which can solve the problems of reducing the size of microwave circuits, and achieve excellent microwave performance and simple chemical composition. , the effect of simple preparation process

Active Publication Date: 2010-07-28
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microwave resonators made of high dielectric constant microwave materials can greatly reduce the size of microwave circuits, but the way out for further miniaturization lies in the development of MCM

Method used

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  • Microwave medium ceramic material with low-temperature sintering spinel structure and preparation method thereof
  • Microwave medium ceramic material with low-temperature sintering spinel structure and preparation method thereof
  • Microwave medium ceramic material with low-temperature sintering spinel structure and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) First, the chemical raw material Li 2 C0 3 , ZnO and TiO 2 Moore Billy 2 CO 3 :ZnO:TiO 2 = 1:1:3 to prepare the main powder;

[0020] (2) Then mix the prepared main powder evenly, add alcohol to the main powder according to the mass ratio of the main powder and alcohol as 1:1, and mix for 4 hours by wet grinding method, and grind it at 120-140 Dry at ℃, sieve with 80-mesh sieve, press into block after sieving, and then raise the pressed block raw material from room temperature to 850-950°C at a heating rate of 5°C / min Insulated for 4 hours, made into a sintered block;

[0021] (3) Pulverize the burnt block made above, add alcohol to the powder according to the mass ratio of powder and alcohol as 1:1, put it in a nylon jar and ball mill it for 4 hours, take it out, put it in an oven at 120-140 Dry at ℃, press into small discs after granulation, deglue at 500-600℃, and get porcelain material after cooling in the furnace, and then sinter the ceramic material at ...

Embodiment 2

[0023] (1) First, the chemical raw material Li 2 CO 3, ZnO and TiO 2 Moore Billy 2 CO 3 :ZnO:TiO 2 = 1:1:3 to prepare the main powder;

[0024] (2) Then mix the prepared main powder evenly, add alcohol to the main powder according to the mass ratio of the main powder and alcohol as 1:1, use wet grinding method to mix for 4 hours, and grind it at 120°C Dry, sieve with 80-mesh sieve, press into block after sieving, and then raise the pressed block raw material from room temperature to 850 °C at a heating rate of 5 °C / min and keep it at this temperature for 4 hours to prepare into a burnt block;

[0025] (3) pulverize the sintered block made above, carry out secondary ball milling for 4 hours, add 0.5% BaCu (B 2 o 5 ), made into powder, according to the volume ratio of powder and alcohol is 1:1, add alcohol to the powder, put it into a nylon tank and ball mill for 4 hours, take it out, put it in an oven and dry it at 120°C, and granulate Afterwards, it is pressed into sm...

Embodiment 3

[0027] (1) First, the chemical raw material Li 2 CO 3 , ZnO and TiO 2 Moore Billy 2 CO 3 :ZnO:TiO 2 = 1:1:3 to prepare the main powder;

[0028] (2) Then mix the prepared main powder evenly, add alcohol to the main powder according to the mass ratio of the main powder and alcohol as 1:1, use wet grinding method to mix for 8 hours, and grind it at 130°C Dry, sieve with 80-mesh sieve, press into block after sieving, and then raise the pressed block raw material from room temperature to 850 °C at a heating rate of 5 °C / min and keep it at this temperature for 4 hours to prepare into a burnt block;

[0029] (3) pulverize the burnt block made above, carry out secondary ball milling for 4 hours, add BaCu (B 2 o 5 ), and made into powder, according to the volume ratio of powder and alcohol is 1:1, add alcohol to the powder, put it into a nylon tank and ball mill for 4 hours, take it out, put it in an oven and dry it at 125°C, and granulate After that, it is pressed into small...

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Abstract

The invention discloses a microwave medium ceramic material with a low-temperature sintering spinel structure and a preparation method thereof. The microwave medium ceramic material with the low-temperature sintering spinel structure contains 97-100 percent by weight of Li2MTi3O8 and 0-3 percent by weight of material with low melting point, wherein M is Zn or Mg; and the material with the low melting point is B2O3 or BaCu(B2O5) or V2O5. The material can be obtained by a solid-phase reaction. The microwave medium ceramic with a low-temperature sintering spinel structure (LTCC) has low sintering temperature (about 900DEG C) and excellent microwave performance: large dielectric constant (epsilon r), high Q*f value and small tau f; the microwave medium ceramic material does not react with Ag and can be co-fired by using pure Ag as an electrode; in addition, the invention can greatly reduce the manufacturing cost of a device, can be used for manufacturing a low-temperature cofiring ceramic system (LTCC), a multilayer medium resonator, a microwave antenna, a filter and other microwave devices.

Description

Technical field [0001] The invention belongs to the field of electronic ceramics and their manufacturing, and relates to a microwave dielectric ceramic material, in particular to a low-temperature sintered spinel structure microwave dielectric ceramic material and a preparation method. Background technique [0002] As electronic information technology continues to develop in the direction of high frequency and digitalization, the requirements for miniaturization, integration and even modularization of components are becoming more and more urgent. Low Temperature Co-fired Ceramics (LTCC) have become one of the main technologies for modularization of electronic devices due to their excellent electrical, mechanical, thermal and process characteristics. The low-temperature co-fired ceramic system (LTCC) has a low sintering temperature and can use metals with low resistivity as conductor materials for multi-layer wiring. It can improve the assembly density and signal transmission...

Claims

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Application Information

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IPC IPC(8): C04B35/462C04B35/622
Inventor 周焕福陈秀丽方亮
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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