Temperature-stable microwave dielectric ceramic as well as preparation method and application thereof

A microwave dielectric ceramic and temperature-stable technology, applied in the field of microwave dielectric ceramics, can solve the problems of inability to meet the high requirements of microwave dielectric ceramic materials and poor temperature stability.

Inactive Publication Date: 2021-05-11
SUZHOU RF TOP ELECTRONICS COMM
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Problems solved by technology

However, the Q×f value of the existing magnesium-aluminosilicate microwave dielectric ceramics is lower than 40,000 GHz, and its temperature stability is poor, so that the performance of microwave components is easily affected by changes in the external environment, so it cannot meet the requirements of microwave dielectric ceramic materials. high requirements

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  • Temperature-stable microwave dielectric ceramic as well as preparation method and application thereof

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preparation example Construction

[0025] The present invention also provides a method for preparing a temperature-stable microwave dielectric ceramic, comprising the following steps:

[0026] (1) The main material for preparing microwave dielectric ceramics: according to the chemical structural formula Mg 2 al 4 Si 5 o 18 The molar ratio of each element in MgO, Al 2 o 3 , SiO 2 Carry out batching separately, mix above-mentioned batching sufficiently, carry out ball milling, after ball milling, dry and sieve, put into corundum crucible to roast then, obtain main ingredient;

[0027] (2) Preparation of auxiliary materials for microwave dielectric ceramics: according to the chemical structural formula Zr 0.6 sn 0.4 TiO 4 The molar ratio of each element in ZrO 2 , SnO 2 、TiO 2 Carry out batching separately, mix above-mentioned batching sufficiently, carry out ball milling, after ball milling, dry and sieve, put into corundum crucible to roast then, obtain auxiliary material;

[0028] (3) Preparation of...

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Abstract

The invention discloses a temperature-stable microwave dielectric ceramic, which is prepared by sintering a main material and an auxiliary material. The chemical structural formula of the main material is Mg2Al4Si5O18, the chemical structural formula of the auxiliary material is Zr0.6Sn0.4TiO4, and the chemical expression of the microwave dielectric ceramic is (100-x) wt% Mg2Al4Si5O18-x wt% Zr0.6Sn0.4TiO4, relative to the total amount of the main material and the auxiliary material, the mass percent of the auxiliary material is x wt%, and x is greater than or equal to 1 and less than or equal to 10. The invention also discloses a preparation method and application of the temperature-stable microwave dielectric ceramic. The microwave dielectric ceramic provided by the invention has excellent microwave dielectric properties, not only improves the quality factor to a certain extent, but also has better temperature stability at high temperature and low temperature, has a lower dielectric constant, and has wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of microwave dielectric ceramics, in particular to a temperature-stable microwave dielectric ceramic and its preparation method and application. Background technique [0002] Microwave dielectric ceramics is a new type of functional ceramics developed in recent decades, and it is the key material for manufacturing microwave dielectric resonators and filters. On the basis of the original microwave ferrite, its formula and manufacturing process have been greatly upgraded, so that it has excellent properties such as suitable electrical constant, low microwave loss, and small temperature coefficient, and is suitable for making various modern microwave ferrites. Devices, such as frequency stabilized oscillators, filters, duplexers, etc. in electronic countermeasures, navigation, communications, radar, household satellite direct TV receivers, and mobile phones, etc., can meet the miniaturization, integration, and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/195
CPCC04B35/195C04B2235/3232C04B2235/3244C04B2235/3293C04B2235/96
Inventor 朴灿映
Owner SUZHOU RF TOP ELECTRONICS COMM
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