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Microwave dielectric ceramic material and preparation method thereof

A microwave dielectric ceramic and ceramic technology, applied in the field of ceramic materials, can solve the problems of poor thermal shock resistance and weak product stability of microwave dielectric ceramics, and achieve the effects of improving thermal shock resistance, high thermal shock resistance and convenient operation.

Pending Publication Date: 2022-02-01
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

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Problems solved by technology

[0004] In order to solve the problems in the above-mentioned background technology, the present invention provides a microwave dielectric ceramic material and a preparation method, aiming at solving the problem of MgTiO in the prior art. 3 -Ca 0.61 Nd 0.26 TiO 3 The problem of poor thermal shock resistance and weak product stability of microwave dielectric ceramic materials in the system

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preparation example Construction

[0040] The embodiment of the present invention also provides a preparation method for preparing the above-mentioned microwave dielectric ceramic material, refer to figure 1 Shown preparation method flowchart, this preparation method comprises:

[0041] S01. Mixing materials: providing a binder, placing the mixture of the main ceramic material, the modification additive and the binder in a ball mill for ball milling and mixing to obtain a mixed slurry.

[0042] Wherein, the rotational speed of the ball mill is 200r / min-400r / min, and the time of the ball mill is 3h-8h.

[0043] It should be noted that, before the mixing step of step S101, the preparation of the main ceramic material is also included, specifically including the preparation process of the first main ceramic material, the second main ceramic material and the third main ceramic material.

[0044] Wherein, the preparation process of the first ceramic main material includes:

[0045] MgO, ZnO and TiO 2 Carry out ca...

Embodiment 1

[0062] The present embodiment provides a kind of microwave dielectric ceramic material, comprises ceramic main material and modification additive, wherein, ceramic main material comprises: (Mg 0.95 Zn 0.05 )TiO 3 68mol%, Ca 0.61 Nd 0.26 TiO 3 15mol%, (Mg 1 / 2 Zn 1 / 2 )Al 2 o 4 17mol%; the total mass of the modified additive is 1% of the total mass of the main ceramic material, specifically, the first additive is SiO that accounts for 0.5% of the mass percentage of the main ceramic material 2 , the second additive is ZrO which accounts for 0.3% of the mass percentage of the main ceramic material 2 , the third additive is CeO which accounts for 0.2% of the mass percentage of the main ceramic material 2 .

[0063] A preparation method for preparing the above microwave dielectric ceramic material, including:

[0064] S11. Provide a binder, place the mixture of the ceramic main material, the modification additive and the binder in a ball mill according to the mass perce...

Embodiment 2

[0068] The present embodiment provides a kind of microwave dielectric ceramic material, comprises ceramic main material and modification additive, wherein, ceramic main material comprises: (Mg 0.95 Zn 0.05 )TiO 370mol%, Ca 0.61 Nd 0.26 TiO 3 14mol%, (Mg 0.5 co 0.5 )Al 2 o 4 16mol%; the total mass of the modified additive is 1.5% of the total mass of the main ceramic material, specifically, the first additive is SiO which accounts for 1% of the mass percentage of the main ceramic material 2 , the second additive is ZrO which accounts for 0.3% of the mass percentage of the main ceramic material 2 , the third additive is 0.2% Nb in the mass percentage of the main ceramic material 2 o 5 .

[0069] A preparation method for preparing the above microwave dielectric ceramic material, including:

[0070] S21. Provide a binder, place the mixture of the ceramic main material, the modification additive and the binder in a ball mill according to the mass percentage predetermi...

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Abstract

The invention provides a microwave dielectric ceramic material and a preparation method thereof, the microwave dielectric ceramic material comprises a ceramic main material and a modified additive, and the total mass of the modified additive is 1%-4% of the total mass of the ceramic main material, wherein the ceramic main material comprises a first ceramic main material, a second ceramic main material and a third ceramic main material, the first ceramic main material is (Mg0. 95Zn0. 05) TiO3, the second ceramic main material is (Mg0. 5Co0. 5) Al2O4, and the third ceramic main material is Ca0. 61Nd0. 26TiO3. The microwave dielectric ceramic material of a (1-x-y) (Mg0. 95Zn0. 05) TiO3-x (Mg0. 5Co0. 5) Al2O4-yCa0. 61Nd0. 26TiO3 system is formed by introducing (Mg0. 5Co0. 5) Al2O4 with good thermal shock resistance, so that the thermal shock resistance of the material is greatly improved, the prepared microwave dielectric ceramic material has excellent performance, the dielectric constant of the microwave dielectric ceramic material is kept about 24, the quality factor is relatively high, the temperature coefficient of resonance frequency of the microwave dielectric ceramic is close to zero, meanwhile, the thermal shock temperature difference of the microwave dielectric ceramic is 130-135 DEG C, and the microwave dielectric ceramic material has high thermal shock resistance and can well meet the requirements of 5G mobile communication application.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a microwave dielectric ceramic material and a preparation method. Background technique [0002] Based on the rapid popularization of 5G networks, radio frequency components such as resonators, filters, oscillators, phase shifters, capacitors, and microwave substrates have become key materials for communication. Among them, microwave dielectric ceramic materials refer to microwave frequency bands used in radio frequency components. The key ceramic material of the circuit as a dielectric material to complete one or more functions. [0003] Since the development of microwave dielectric ceramics in 1939, various low, medium and high dielectric microwave dielectric ceramics have achieved rapid development. There are many types, and the related systems have gradually matured and improved. r The microwave dielectric ceramics around 24 are mainly MgTiO 3 -Ca 0.61...

Claims

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Application Information

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IPC IPC(8): C04B35/465
CPCC04B35/465C04B2235/3284C04B2235/3275C04B2235/3222C04B2235/3206C04B2235/3208C04B2235/3224C04B2235/3232C04B2235/3281C04B2235/3267C04B2235/3244C04B2235/3418C04B2235/3826C04B2235/3865C04B2235/3251C04B2235/3229C04B2235/608C04B2235/5436
Inventor 李礼王秀红黄庆焕
Owner 无锡市高宇晟新材料科技有限公司