Cordierite-doped multiphase microwave dielectric ceramic material as well as preparation method and application thereof

A microwave dielectric ceramic and cordierite technology, which is applied in the field of 5G microwave dielectric ceramic materials, can solve problems such as failure and peeling of microwave dielectric ceramic devices, and achieve the effects of good application prospects, controllable process and easy operation.

Inactive Publication Date: 2021-06-01
无锡市高宇晟新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to their inherent brittleness, existing microwave dielectric ceramic materials are prone to microcracks during rapid heating or extremely rapid cooling at high temperatures. With the rapid increase and expansion of microcracks, it may lead to catastrophic damage such as failure and peeling of microwave dielectric ceramic devices.

Method used

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  • Cordierite-doped multiphase microwave dielectric ceramic material as well as preparation method and application thereof
  • Cordierite-doped multiphase microwave dielectric ceramic material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] This embodiment provides a composite microwave dielectric ceramic material doped with cordierite, which consists of 99.45wt% main material CaTiO 3 -SmAlO 3 , 0.5wt% cordierite and 0.05wt% sintering aid Y 2 o 3 production.

[0078] (1) Main material CaTiO 3 -SmAlO 3 The preparation steps are as follows: Weigh 34wt% TiO 2 , 31wt% Sm 2 o 3 , 25wt% CaO and 10wt% Al 2 o 3 The mixture is prepared by batching, and the mixture, yttrium-stabilized zirconium balls and deionized water are placed in a ball mill tank at a mass ratio of 1:5:3 for ball milling, and the ball milling time is 5 hours. The slurry obtained by ball milling was dried at 100° C. for 20 hours, and then passed through a 100-mesh sieve to obtain the main material powder. The main material powder was pre-sintered in a high-temperature box furnace for 3 hours, and the pre-sintering temperature was 1200 ° C to obtain the main material CaTiO 3 -SmAlO 3 .

[0079] (2) The preparation steps of cordierite ...

Embodiment 2

[0082] This embodiment provides a composite microwave dielectric ceramic material doped with cordierite. The difference from Embodiment 1 is that the main material is CaTiO 3 -SmAlO 3 content of 99.15wt%, cordierite content of 0.8wt% and sintering aid Y 2 o 3 The content is 0.05wt%, and the rest of the raw materials and steps are the same as in Example 1, and will not be repeated here.

Embodiment 3

[0084] This embodiment provides a composite microwave dielectric ceramic material doped with cordierite. The difference from Embodiment 1 is that the main material is CaTiO 3 -SmAlO 3 content of 98.95wt%, cordierite content of 1wt% and sintering aid Y 2 o 3 The content is 0.05wt%, and the rest of the raw materials and steps are the same as in Example 1, and will not be repeated here.

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Abstract

The invention provides a cordierite-doped multiphase microwave dielectric ceramic material as well as a preparation method and application thereof, and relates to the technical field of 5G microwave dielectric ceramic materials. The cordierite-doped multiphase microwave dielectric ceramic material provided by the invention comprises a main material and a modified doping agent, and the main material is CaTiO3-SmAlO3; the modified doping agent is cordierite, the composition of the cordierite is 2MgO. 2Al2O3. 5SiO2, and the addition amount of the cordierite in the multiphase microwave dielectric ceramic material is 0.5%-2%. The multiphase microwave dielectric ceramic material provided by the invention has good comprehensive performance, the dielectric constant epsilon r of the multiphase microwave dielectric ceramic material can reach 45, the quality factor Qf is greater than or equal to 45,000, the bending strength is greater than or equal to 278 MPa, the thermal shock temperature is 150 DEG C, the reliability is higher, the requirements of high frequency, miniaturization and multi-functionalization of microwave elements can be met, the multiphase microwave dielectric ceramic material can also adapt to severe working environments, and the multiphase microwave dielectric ceramic material has good application prospects.

Description

technical field [0001] The invention relates to the technical field of 5G microwave dielectric ceramic materials, in particular to a composite-phase microwave dielectric ceramic material doped with cordierite, a preparation method and an application thereof. Background technique [0002] Microwave dielectric ceramic materials are widely used in components such as resonators, filters, microwave dielectric antennas, frequency oscillators, and dielectric waveguide transmission lines. Due to their inherent brittleness, existing microwave dielectric ceramic materials are prone to microcracks during rapid heating or extremely rapid cooling at high temperatures. With the rapid increase and expansion of microcracks, it may lead to catastrophic damage such as failure and peeling of microwave dielectric ceramic devices. . [0003] In view of this, the present invention is proposed. Contents of the invention [0004] One of the objectives of the present invention is to provide a co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/465C04B35/44C04B35/50C04B35/622C04B35/64
CPCC04B35/465C04B35/44C04B35/50C04B35/622C04B35/64C04B2235/3481C04B2235/3208C04B2235/3224C04B2235/3225
Inventor 王秀红黄庆焕叶荣顾国治王斌华
Owner 无锡市高宇晟新材料科技有限公司
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