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High-quality-factor yttrium-doped zirconium oxide microwave dielectric ceramic material and preparation method thereof

A technology of yttrium-doped zirconia and microwave dielectric ceramics, which is applied in the field of high-quality factor yttrium oxide-doped zirconia microwave dielectric ceramic materials and its preparation, can solve problems that cannot meet the application requirements of microwave devices, and achieve quality factor improvement, Improved quality factor and simple sintering process

Active Publication Date: 2021-03-05
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing yttrium-doped zirconia ceramics at this stage generally have a dielectric constant of 18-28, but the Q×f value is only around 500GHz (@10GHz), which cannot meet the application requirements of microwave devices at all.

Method used

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  • High-quality-factor yttrium-doped zirconium oxide microwave dielectric ceramic material and preparation method thereof
  • High-quality-factor yttrium-doped zirconium oxide microwave dielectric ceramic material and preparation method thereof

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Embodiment 1-3

[0045] The invention provides a high-quality factor yttrium-doped zirconia microwave dielectric ceramic material and a preparation method thereof. The chemical composition of the material is ZrO 2 -x mol%Y 2 o 3 -y wt%Al 2 o 3 -z wt% SiO 2 , where x is the molar ratio, 1.5≤x≤2, y and z are mass percentages, 0.04≤y≤0.06, 0.001≤z≤0.002. The raw material is selected from 3mol% yttrium doped zirconia nano powder (20-80nm), zirconia nano powder (20-40nm), alumina powder and silicon dioxide powder (20-80nm). Table 1 shows the mass percentage of each raw material in the total amount of raw materials in the examples. The raw materials were weighed and mixed by ball milling at a speed of 270-360 rpm.

[0046] Specifically described method comprises the following steps:

[0047] (1) Ingredients: According to the general chemical formula ZrO 2 -x mol%Y 2 o 3 -y wt%Al 2 o 3 -z wt% SiO 2 , the raw material is selected from 3mol% yttrium-doped zirconia nano-powder, zirconia nano...

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Abstract

The invention relates to a high-quality-factor yttrium-doped zirconium oxide microwave dielectric ceramic material and a preparation method thereof. The yttrium-doped zirconium oxide microwave dielectric ceramic material has a tetragonal phase structure, the chemical composition is that: of ZrO2-x mol% Y2O3-y wt% Al2O3-z wt% SiO2, the x is greater than or equal to 1.5 and less than or equal to 2.0, the y is greater than or equal to 0.04 and less than or equal to 0.06, and the z isgreater than or equal to 0.001 and less than or equal to 0.002; and the x mol% is the molar content of the Y2O3, the y wt% is the mass percentage content of the Al2O3, and the z wt% is the mass percentage content of the SiO2.

Description

technical field [0001] The invention relates to a high-quality factor yttria-doped zirconia microwave dielectric ceramic material and a preparation method thereof, belonging to the field of electronic component materials. Background technique [0002] Microwave dielectric ceramic materials with a dielectric constant of about 30 can adapt to the development of L, S, C-band and even X-band communication technologies, and can meet the requirements of small size and light weight, integration and high reliability, and low cost. It is an important application Valuable electronic ceramic materials. At the same time, microwave dielectric ceramic materials must also have a high quality factor, because microwave devices made of high-quality factor ceramics not only have lower loss, but also facilitate accurate frequency selection of the device [1] . Therefore, microwave dielectric ceramic materials with a dielectric constant of about 30 and a high quality factor in the microwave fre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
CPCC04B35/48C04B35/622C04B2235/3217C04B2235/3225C04B2235/3418C04B2235/5454C04B2235/76
Inventor 陈鹤拓毛小建章健王士维
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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