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Low-temperature sintered zinc titanate high-frequency dielectric ceramic and preparation method thereof

A technology of high-frequency dielectric and zinc titanate, which is applied in the field of high-frequency dielectric ceramics, can solve the problems of low dielectric properties of materials, high production cost, and complicated preparation process, and achieve the effect of reducing production cost and low price

Inactive Publication Date: 2005-11-23
西安广芯电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings in the prior art that require special equipment and expensive raw materials to increase the preparation cost, the preparation process is complicated, and the dielectric properties of the material are low, the present invention proposes a high-frequency zinc titanate that can be sintered at low temperature. Dielectric ceramic and its preparation method, its sintering temperature is from 850 to 950°C

Method used

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Embodiment 1

[0018] In this embodiment, a chemical method is used to obtain the starting material zinc oxide for preparing the ceramic composition. The ratio of raw materials in this embodiment is: 1 part of zinc oxide produced by the decomposition of basic zinc carbonate, 1 part of nano-anatase titanium dioxide, plus 1.00% by weight of additives. The total weight of the additives is 100% of the base material.

[0019] The preparation steps are:

[0020] (1) Heat the analytically pure basic zinc carbonate to 350°C to decompose it into zinc oxide, the holding time is 3 hours, and the heating rate is 5°C / min. The particle size of the obtained zinc oxide is 50-80 nanometers.

[0021] (2) Zinc oxide and nano-anatase titanium dioxide are mixed in a molar ratio of 1: 1 and ball milled for 24 hours in a polyethylene tank with a planetary mill. With absolute ethanol and zirconium balls as the medium, the particle size of the titanium dioxide is 30-50 nanometers. The wet material after ball mill...

Embodiment 2

[0029] In this embodiment, a chemical method is used to obtain the starting material zinc oxide for preparing the ceramic composition. The ratio of raw materials in this embodiment is: 1 part of zinc oxide produced by the decomposition of basic zinc carbonate, 1 part of nano-anatase titanium dioxide, plus 1.00% by weight of additives. The total weight of the additives is 100% of the base material.

[0030] The preparation steps are:

[0031] (1) Heat the analytically pure basic zinc carbonate to 350°C to decompose it into zinc oxide, the holding time is 3 hours, and the heating rate is 5°C / min. The particle size of the obtained zinc oxide is 50-80 nanometers.

[0032] (2) Zinc oxide and nano-anatase titanium dioxide are mixed in a molar ratio of 1: 1 and ball milled for 24 hours in a polyethylene tank with a planetary mill. With absolute ethanol and zirconium balls as the medium, the particle size of the titanium dioxide is 30-50 nanometers. The wet material after ball mill...

Embodiment 3

[0040] In this embodiment, a chemical method is used to obtain the starting material zinc oxide for preparing the ceramic composition. The ratio of raw materials in this embodiment is: 1 part of zinc oxide produced by the decomposition of basic zinc carbonate, 1 part of nano-anatase titanium dioxide, plus 1.00% by weight of additives. The total weight of the additives is 100% of the base material.

[0041] The preparation steps are:

[0042] (1) Heat the analytically pure basic zinc carbonate to 350°C to decompose it into zinc oxide, the holding time is 3 hours, and the heating rate is 5°C / min. The particle size of the obtained zinc oxide is 50-80 nanometers.

[0043] (2) Zinc oxide and nano-anatase titanium dioxide are mixed in a molar ratio of 1: 1 and ball milled in a polyethylene tank for 24 hours with absolute ethanol and zirconium balls as the medium, wherein the particle size of the titanium dioxide is 30-50 nanometers. The wet material after ball milling was dried in ...

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Abstract

The invention relates to a low-temperature sintered zinc titanate high-frequency dielectric ceramic and preparation method, wherein the ceramic comprises zinc oxide produced by decomposing one portion of basic zinc carbonate, one portion of anatase nano-TiO2 and 0.75-1.00 wt% of vanadium pentoxide and diboron trioxide additive, wherein the basic zinc carbonate is used for producing zinc oxide, the preparation comprises ball grinding, drying, grinding, forming, pre-calcination, sintering and silvering.

Description

(1) Technical field [0001] The invention relates to the field of high-frequency dielectric ceramics in the subject of materials, and relates to a low-temperature sinterable zinc titanate high-frequency dielectric ceramic and a preparation method thereof. (2) Background technology [0002] In recent years, with the rapid development of mobile communications and satellite communications, there is a great demand for high-frequency dielectric ceramics as materials for high-frequency integrated circuits or dielectric resonators. [0003] In addition, the advancement of portable information communication equipment has led to the development of various types of circuit boards and multi-chip modules due to multi-chip high-frequency devices or low-temperature co-fired ceramics (LTCC), which requires devices to be miniaturized, chip Minimization and light weight enable dielectric ceramics to be laminated and co-fired with other dielectric materials or inductive materials, which requir...

Claims

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Application Information

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IPC IPC(8): C04B35/462
Inventor 刘向春赵丽丽高峰田长生
Owner 西安广芯电子科技有限公司
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