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Cordierite type microwave medium ceramic material and preparation method thereof

A technology of microwave dielectric ceramics and ceramic materials, applied in the field of electronic information functional ceramic materials and devices, can solve problems such as not many types

Inactive Publication Date: 2016-08-03
ZHEJIANG ZAPON ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many types of low-dielectric microwave dielectric ceramics that have good frequency and temperature stability, low loss and dielectric constant below 10 under the working environment temperature.

Method used

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  • Cordierite type microwave medium ceramic material and preparation method thereof
  • Cordierite type microwave medium ceramic material and preparation method thereof
  • Cordierite type microwave medium ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Example 1: Preparation of Mg 2 Al 4 (Si 5-0.05 Ti 0.05 )O 18

[0029] Step (1). Selection of raw materials:

[0030] The purity (mass percentage) is 99.99% MgO, the purity (mass percentage) is 99.99% Al 2 o 3 , a purity (mass percentage) of 99.99% SiO 2 And purity (mass percentage composition) is 99.8% TiO 2 ;

[0031] Step (2). Ingredients and mixing:

[0032] MgO, Al 2 o 3 , SiO 2 、TiO 2 According to the chemical formula Mg 2 Al 4 (Si 5-x Ti x )O 18 For measurement, weigh 6.8854gMgO, 17.4012gAl 2 o 3 , 25.3794gSiO 2 , 0.3414gTiO 2 The raw material is ground with absolute ethanol as a grinding medium and ground in a ball mill for 24 hours to obtain a liquid mixture; then the liquid mixture is dried in an oven at 90°C to constant weight to obtain a dry mixture;

[0033] Step (3).Mg 2 Al 4 (Si 5-0.05 Ti 0.05 )O 18 Ceramic raw material pre-firing:

[0034] Pass the dry mixture obtained in step (2) through an 80-mesh standard sieve to disperse ...

example 2

[0045] Example 2: Preparation of Mg 2 Al 4 (Si 5-0.10 Ti 0.10 )O 18 ,

[0046] Step (1). Selection of raw materials:

[0047] The purity (mass percentage) is 99.99% MgO, the purity (mass percentage) is 99.99% Al 2 o 3 , a purity (mass percentage) of 99.99% SiO 2 And purity (mass percentage composition) is 99.8% TiO 2 ;

[0048] Step (2). Ingredients and mixing:

[0049] MgO, Al 2 o 3 , SiO 2 、TiO 2 According to the chemical formula Mg 2 Al 4 (Si 5-0.10 Ti 0.10 )O 18 For measurement, weigh 6.8738gMgO, 17.3719gAl 2 o 3 , 25.0807gSiO 2 , 0.6817gTiO 2 The raw material is ground with absolute ethanol as a grinding medium and ground in a ball mill for 24 hours to obtain a liquid mixture; then the liquid mixture is dried in an oven at 90°C to constant weight to obtain a dry mixture;

[0050] Step (3).Mg 2 Al 4 (Si 5-0.10 Ti 0.10 )O 18 Ceramic raw material pre-firing:

[0051] Pass the dry mixture obtained in step (2) through an 80-mesh standard sieve to d...

example 3

[0062] Example 3: Preparation of Mg 2 al 4 (Si 5-0.15 Ti 0.15 )O 18 ,

[0063] Step (1). Selection of raw materials:

[0064] The purity (mass percentage) is 99.99% MgO, the purity (mass percentage) is 99.99% Al 2 o 3 , a purity (mass percentage) of 99.99% SiO 2 And purity (mass percentage composition) is 99.8% TiO 2 ;

[0065] Step (2). Ingredients and mixing:

[0066] MgO, Al 2 o 3 , SiO 2 、TiO 2 According to the chemical formula Mg 2 al 4 (Si 5-0.15 Ti 0.15 )O 18 For measurement, weigh 6.8622gMgO, 17.3427gAl 2 o 3 , 24.7830gSiO 2 , 1.0208gTiO 2 The raw material is ground with absolute ethanol as a grinding medium and ground in a ball mill for 24 hours to obtain a liquid mixture; then the liquid mixture is dried in an oven at 90°C to constant weight to obtain a dry mixture;

[0067] Step (3).Mg 2 al 4 (Si 5-0.15 Ti 0.15 )O 18 Ceramic raw material pre-firing:

[0068] Pass the dry mixture obtained in step (2) through an 80-mesh standard sieve to d...

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Abstract

The invention relates to a cordierite type microwave medium ceramic material and a preparation method thereof. The chemical formula of the microwave ceramic is Mg<2>Al<4>(Si<5-x>Ti<x>)O<18>, 0.05=<x=<0.40. The preparation method comprises the following steps: precisely weighing powder of oxides of each element in the chemical formula according to the chemical formula, mixing, evenly grinding, pre-burning, granulating, pressing granules into sheets, moulding, sintering to prepare ceramic, mechanically processing the ceramic to prepare a dielectric resonator in the late period, and carrying out a microwave test on the dielectric resonator. The disclosed microwave ceramic has a low dielectric constant, a high quality factor, and a temperature coefficient of resonance frequency, which is close to zero, and thus is suitable for being used as a substrate material of a microwave circuit.

Description

technical field [0001] The invention belongs to the technical field of electronic information functional ceramic materials and devices, and specifically relates to a kind of Mg with the characteristics of high frequency, low dielectric constant, high quality factor and low resonance frequency temperature drift coefficient 2 al 4 (Si 5-x Ti x )O 18 Microwave dielectric ceramic material and its preparation method. Background technique [0002] With the development of electronic technology in the direction of miniaturization, integration and high frequency, the unprecedented popularization and rapid development of electronic communication equipment driven by information technology have made the competition for communication frequency bands more intense. Various high-quality wireless signal transmissions have made Components must be high frequency. The production of electronic components suitable for high-frequency microwave applications has become inevitable. Since this k...

Claims

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Application Information

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IPC IPC(8): C04B35/195
CPCC04B35/195C04B2235/3206C04B2235/3232
Inventor 黄骇
Owner ZHEJIANG ZAPON ELECTRONICS TECH
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