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Microwave dielectric ceramic material and preparation method thereof

A technology for microwave dielectric ceramics and raw materials, applied in the field of dielectric ceramics, can solve the problems of single dielectric constant and low quality factor, and achieve the effects of improving quality factor, simple process and expanding the range of dielectric constant.

Active Publication Date: 2022-04-19
SHENZHEN ZHENHUA FU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a microwave dielectric ceramic material and its preparation method, aiming to solve the technical problems of the existing microwave dielectric ceramic material with relatively single dielectric constant and low quality factor

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  • Microwave dielectric ceramic material and preparation method thereof
  • Microwave dielectric ceramic material and preparation method thereof
  • Microwave dielectric ceramic material and preparation method thereof

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preparation example Construction

[0032] On the other hand, an embodiment of the present invention also provides a method for preparing a microwave dielectric ceramic material, comprising the following steps:

[0033] S01: Provide the raw materials for the preparation of the microwave dielectric ceramic material described in the embodiment of the present invention;

[0034] S02: mixing the titanium dioxide, silicon dioxide, zinc oxide, barium carbonate and niobium oxide, performing the first ball milling treatment, and then performing the first sintering to obtain an initial sintered product;

[0035] S03: Mixing the initial sintered product with the copper oxide, and the boron oxide and / or boric acid, performing a second ball milling treatment, and then performing a second sintering to obtain the microwave dielectric ceramic material.

[0036] The preparation method of the microwave dielectric ceramic material provided by the embodiment of the present invention adopts special preparation raw materials for pre...

Embodiment 1

[0043] A microwave dielectric ceramic material is made of the following raw materials in parts by weight:

[0044] 12 parts of titanium dioxide;

[0045] 65 parts of zinc oxide;

[0046] 24 parts of silicon dioxide;

[0047] Barium carbonate 0.1 part;

[0048] Niobium oxide 0.1 part;

[0049] Copper oxide 0.1 part;

[0050] Boron oxide 3 parts.

[0051] The preparation method of the microwave dielectric ceramic material comprises:

[0052] Put the titanium dioxide, zinc oxide, silicon dioxide, barium carbonate and niobium oxide in the above parts by weight into a ball mill jar for ball milling, dry and pre-sinter at 900°C. Then add copper oxide and boron oxide in the remaining parts by weight, perform ball milling for the second time, dry and shape, and sinter at 900°C to obtain a microwave dielectric ceramic material. The preparation method can finally obtain a microwave dielectric ceramic material with a dielectric constant of 8, a quality factor Qf of 12000 GHz, and ...

Embodiment 2

[0065] A microwave dielectric ceramic material is made of the following raw materials in parts by weight:

[0066] 22 parts of titanium dioxide;

[0067] Zinc oxide 0.1 part;

[0068] Silicon dioxide 0.1 part;

[0069] 29 parts of barium carbonate;

[0070] 45 parts of niobium oxide;

[0071] 1 part copper oxide;

[0072] Boron oxide 3 parts.

[0073] The preparation method of the microwave dielectric ceramic material comprises:

[0074] Put the titanium dioxide, zinc oxide, silicon dioxide, barium carbonate and niobium oxide in the above parts by weight into a ball mill jar for ball milling, dry and pre-sinter at 900°C. Then add copper oxide and boron oxide in the remaining parts by weight, carry out ball milling for the second time, dry and shape, and sinter at 900°C to obtain a microwave dielectric ceramic material. The preparation method can finally obtain a microwave dielectric ceramic material with a dielectric constant of 35, a quality factor Qf of 13000 GHz, and...

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Abstract

The invention belongs to the technical field of dielectric ceramics, and in particular relates to a microwave dielectric ceramic material and a preparation method thereof. The raw materials for the preparation of the microwave dielectric ceramic material include the following components in parts by weight: 12-22 parts of titanium dioxide; 0.1-24 parts of silicon dioxide; 0.1-65 parts of zinc oxide; 0.1-29 parts of barium carbonate; 0.1-1 part of copper oxide; 0.25-8 parts of boron oxide and / or boric acid. The microwave dielectric ceramic material obtained by the preparation of raw materials can not only expand the range of the dielectric constant of the microwave dielectric ceramic material, improve its quality factor, but also make the resonant frequency temperature coefficient of the microwave dielectric ceramic material close to zero, so it can be used in many applications. The electrical requirements of the base material required for this kind of LTCC components, and can be well matched with silver electrodes for co-firing, so it has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of dielectric ceramics, and in particular relates to a microwave dielectric ceramic material and a preparation method thereof. Background technique [0002] Low temperature co-fired ceramic (Low Temperature Co-fired Ceramic, LTCC) technology is a remarkable integrated component technology developed in 1982. It has become the development direction of the passive device field and the economic growth point of the new component industry. In the future Communications, wireless local area network (WLAN), digital signal processor, global positioning system (GPS) receiving components, automotive electronics and other fields have a huge market of tens of billions of dollars every year. Apply LTCC technology to produce filters, baluns, couplers, power dividers, antennas and other products. Low-temperature co-fired microwave dielectric ceramics are the key basic materials for the preparation of LTCC devices. In addit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/453C04B35/495
CPCC04B35/453C04B35/495C04B2235/3232C04B2235/3418C04B2235/442C04B2235/3281C04B2235/3409C04B2235/96
Inventor 刘洋朱建华肖倩黎燕林张婷王东王智会
Owner SHENZHEN ZHENHUA FU ELECTRONICS