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A kind of zmat series microwave ceramic material and its preparation method and application

A technology of microwave ceramics and ceramic materials, which is applied in the field of information functional materials, can solve problems such as low dielectric constant, and achieve the effect of low dielectric constant and high Qf value

Active Publication Date: 2022-06-07
XIAMEN SUNYEAR ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Microwave dielectric ceramic materials with high quality factor, low dielectric constant and near-zero resonant frequency temperature coefficient are relatively scarce in the market

Method used

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  • A kind of zmat series microwave ceramic material and its preparation method and application
  • A kind of zmat series microwave ceramic material and its preparation method and application
  • A kind of zmat series microwave ceramic material and its preparation method and application

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Experimental program
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preparation example Construction

[0030] The preparation method of the ZMAT series microwave ceramic material of the present invention comprises the following steps:

[0031] ①Solid-phase synthesis of the main material Mg 2 Sn x Si 5+2x Al 4-4x O 18 : According to the proportion of each metal element and silicon element in the main material, weigh the high-purity magnesium hydroxide, tin oxide, silicon dioxide and alumina of the corresponding mass, and place them in a ball mill. The mass ratio is solid material: water = 1: ( 1.0~2.0) was added with water for wet ball milling. The ball is ground into uniform powder, and the particle size D50 can be 0.9-2.0um; then it is dried by spray drying tower or other methods; then it is calcined in the temperature range of 1220℃~1320℃ in an air furnace for 2~4 hours; finally the main material is obtained Mg 2 Sn x Si 5+2x Al 4-4x O 18 powder.

[0032] ②Solid-phase synthesis of auxiliary material Zr 1-3y La 4y TiO 4 : According to the molar ratio of each meta...

Embodiment

[0045] This embodiment provides a ZMAT-based microwave ceramic material and a preparation method thereof, and the solution of the present invention is not limited to this embodiment. The ceramic material includes a main crystalline phase and modifying additives. The chemical formula of the main crystal phase is Mg 2 Sn x Si 5+2x Al 4-4x O 18 ·aZr 1-3y La 4y TiO 4 , where 0.05<x<0.1, 0.1<y<0.3, 0.01<a<0.05. The mass fraction of the main crystal phase in the ceramic material is 98-99.5 wt %. The mass fraction of the modified additive in the ceramic material is 0.5-2 wt %.

[0046] (1) According to the main material Mg 2 Sn x Si 5+2x Al 4-4x O 18 The composition of , where 0.052 Sn x Si 5+2x Al 4-4x O 18 powder.

[0047] Table 1 Main material Mg 2 Sn x Si 5+2x Al 4-4x O 18 Example formula

[0048]

[0049] (2) According to the auxiliary material Zr 1-3y La 4y TiO 4 The composition of 0.1<y<0.3: zirconium dioxide, lanthanum oxide and titanium dioxide...

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Abstract

The invention provides a ZMAT series microwave ceramic material and a preparation method thereof, which relate to the field of information functional materials. The ceramic material includes a main crystal phase and modified additives, and the main crystal phase includes a main material and an auxiliary material. The general chemical formula of the main crystal phase is Mg 2 sn x Si 5+2x Al 4‑ 4x o 18 ·aZr 1‑3y La 4y TiO 4 , where 0.05 <x<0.1，0.1<y<0.3，0.01<a<0.05。其中mg2Sn x Si 5+2x al 4‑4x o 18 The general chemical formula of the main material, Zr 1‑3y La 4y TiO 4 The general chemical formula of the auxiliary material. The mass fraction of the main crystal phase in the ceramic material is 98-99.5 wt%, and the mass fraction of the modification additive in the ceramic material is 0.5-2 wt%. Modified additives are selected from SrCO 3 、BaCO 3 、TiO 2 , Nb 2 o 5 , Sb 2 o 3 and MnCO 3 One or more mixtures of these. Ceramic material of the present invention is a kind of lead-free environment-friendly material, and it adopts solid phase method to synthesize main material Mg 2 sn x Si 5+2x al 4‑4x o 18 and auxiliary material Zr 1‑3y La 4y TiO 4 , to prepare a uniform powder ceramic material. After the powder is sintered, the room temperature dielectric constant is between 5 and 8, the Qf value is ≥60000GHz, and the temperature coefficient τf (-40~85℃): ±10ppm / ℃ microwave ceramics The material meets the relevant microwave performance requirements of microwave devices.

Description

technical field [0001] The invention relates to the field of information functional materials, in particular to a ZMAT series microwave ceramic material and a preparation method and application thereof. Background technique [0002] With the high-frequency development of microwave communication technologies such as satellite communication and military radar, microwave dielectric ceramic materials with high quality factor, low dielectric constant and near-zero resonant frequency temperature coefficient have attracted much attention. In the field of microwave and millimeter wave communication, as microwave components such as filters, resonators, and antenna sheets, low dielectric constant ceramics can effectively reduce the interaction of signals, and greatly improve the speed of signal transmission and response. Microwave dielectric ceramic materials with high quality factor, low dielectric constant and near-zero resonant frequency temperature coefficient are relatively scarc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/195C04B35/44C04B35/622
CPCC04B35/195C04B35/44C04B35/622C04B2235/3232C04B2235/442C04B2235/3251C04B2235/3294C04B2235/96
Inventor 杨和成张军志罗昌宸
Owner XIAMEN SUNYEAR ELECTRONICS CO LTD
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