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High dielectric constant microwave dielectric material added with strontium oxide and preparation method and application thereof

A technology of microwave dielectric material and strontium oxide, which is applied in the field of electronic information, can solve the problems that devices cannot work stably, and achieve the effect of facilitating industrial mass production, moderate sintering temperature and high dielectric constant

Inactive Publication Date: 2017-03-22
ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of ceramic materials have several advantages compared to previous methods such as low temperatures or complicated processes that require expensive equipment like vacuum furnaces. These improvements make them more efficient than older options but still save on costly manufacturing steps. Additionally, they also allow for better control over their properties during use due to its ability to change electrical parameters easily without requiring complex replacements from other sources.

Problems solved by technology

The technical problem addressed by this patented technology relates to improving the performance of micromagnetic materials for use with high frequencies like radio waves or millimeter waves while maintaining stable operation over time at different temperatures.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the embodiment of the present invention, a high dielectric microwave dielectric material added with strontium oxide has a general formula of Ba 0.75 (Li 0.5 SM 0.5 ) 0.25 ZrO 3 +0.06wt.%SrO.

[0026] The preparation method of the high dielectric microwave dielectric material added with strontium oxide comprises the following steps:

[0027] (1) Accurately weigh analytically pure BaCO according to the general formula 3 , Li 2 CO 3 、Sm 2 o 3 , ZrO 2 , SrO, mixed, with zirconia balls as the medium, absolute ethanol as the solvent, powder: zirconia balls: absolute ethanol=1g: 3g: 1.5ml, wet ball milling for 16h, the slurry obtained was dried, passed 60 mesh sieves to obtain mixed powder;

[0028] (2) Pre-sinter the mixed powder at a temperature of 1000°C in an air atmosphere for 5 hours;

[0029] (3) Add absolute ethanol to the pre-sintered mixed powder as a medium, wet ball mill again for 16 hours, dry the obtained slurry, pass through an 80-mesh sieve, and ...

Embodiment 2

[0033] In the embodiment of the present invention, a high dielectric microwave dielectric material added with strontium oxide has a general formula of Ba 0.85 (Li 0.5 SM 0.5 ) 0.15 ZrO 3 +0.08wt.%SrO.

[0034] The preparation method of the high dielectric microwave dielectric material added with strontium oxide comprises the following steps:

[0035] (1) Accurately weigh analytically pure BaCO according to the general formula 3 , Li 2 CO 3 、Sm 2 o 3 , ZrO 2 , SrO, mixed, with zirconia balls as the medium, absolute ethanol as the solvent, powder: zirconia balls: absolute ethanol=1g: 4g: 1.2ml, wet ball milling for 20h, the obtained slurry was dried, passed 60 mesh sieves to obtain mixed powder;

[0036] (2) Pre-sinter the mixed powder at a temperature of 1050°C in an air atmosphere for 3 hours;

[0037] (3) Add absolute ethanol to the pre-sintered mixed powder as a medium, wet ball mill again for 20 hours, dry the obtained slurry, pass through a 80-mesh sieve, and o...

Embodiment 3

[0041] In the embodiment of the present invention, a high dielectric microwave dielectric material added with strontium oxide has a general formula of Ba 0.78 (Li 0.5 SM 0.5 ) 0.22 ZrO 3 +0.065wt.%SrO.

[0042] The preparation method of the high dielectric microwave dielectric material added with strontium oxide is the same as that in Example 1.

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Abstract

The invention discloses a high dielectric constant microwave dielectric material added with strontium oxide and a preparation method and an application thereof. The general formula of the material is Bax(Li0.5Sm0.5)yZrx+yO3(x+y)+zWt.% SrO, wherein x is greater than or equal to 0.75 but less than or equal to 0.85, y is greater than or equal to 0.15 but less than or equal to 0.25, z represents that SrO is added in percentages by mass, and z is greater than or equal to 0.06 but less than or equal to 0.08. The preparation method comprises the steps: mixing; pre-sintering; ball-milling again; granulating; forming; rubber discharging; and sintering. The dielectric constant epsilon r of the material disclosed by the invention is 125.8-152.6 which can be adjusted in a certain range; Q*f0 is 3656-3820GHz, and the temperature coefficient of frequency tau is [(-8.5)-(+53.8)]*10<-6>/ DEG C which can be adjusted in a certain range. As the material disclosed by the invention has the high dielectric constant and both the dielectric constant and the temperature coefficient of frequency can be adjusted in a certain range, the material is particularly suitable for being used for dielectric antennas.

Description

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Claims

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Application Information

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Owner ZHENGZHOU LIFUAI BIOLOGICAL TECH CO LTD
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