Microwave dielectric ceramic material, preparation method and application thereof, microwave dielectric ceramic body, preparation method and application of microwave dielectric ceramic body, and microwave device

A technology of microwave dielectric ceramics and microwave devices, applied in the field of electronic ceramics, can solve problems such as poor temperature stability and low dielectric constant, and achieve the effect of high temperature stability and good temperature characteristics

Active Publication Date: 2020-01-10
SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, magnesium titanate (MgTiO 3 ) Ceramics, as a traditional microwave dielectric material, still have excellent microwave dielectric properties such as low dielectric constant and ultra-high quality factor in the millimeter wave band, but have the disadvantage of poor temperature stability (τf=-50ppm / ℃)

Method used

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  • Microwave dielectric ceramic material, preparation method and application thereof, microwave dielectric ceramic body, preparation method and application of microwave dielectric ceramic body, and microwave device
  • Microwave dielectric ceramic material, preparation method and application thereof, microwave dielectric ceramic body, preparation method and application of microwave dielectric ceramic body, and microwave device

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preparation example Construction

[0062]According to another aspect of the present invention, a method for preparing the above-mentioned microwave dielectric ceramic material is provided, comprising: mixing and dispersing each component and then calcining to obtain the microwave dielectric ceramic material. The method has scientific and simple process, is suitable for industrial mass production, and the obtained microwave dielectric ceramic material has lower dielectric constant, proper f*Q and higher temperature stability.

[0063] In a preferred embodiment, MgO, CaO, SiO 2 、Nd 2 o 3 、TiO 2 , optional Sm 2 o 3 Mix and disperse with an optional oxide of R, and then calcine;

[0064] Or, (a) combine MgO and TiO 2 Synthesis of MgTiO by Calcination after Mixing and Dispersion 3 and / or Mg 2 TiO 4 , (b) MgO and SiO 2 Calcination to synthesize Mg after mixing and dispersing 2 SiO 4 and optionally MgSiO 3 , (c) CaO and TiO 2 Synthesis of CaTiO by Calcination after Mixing and Dispersion 3 , (d) CaO, Nd ...

Embodiment 1

[0085] A microwave dielectric ceramic material prepared from ceramic main materials:

[0086] According to the weight percentage of each component in the microwave dielectric ceramic material, the main ceramic materials include: MgO 30%, CaO 5.5%, SiO 2 10%, Nd 2 o 3 7.5% and TiO 2 47%;

[0087] The particle size of each component is 550nm.

Embodiment 2

[0089] A microwave dielectric ceramic material, which is mainly prepared from ceramic main materials:

[0090] According to the weight percentage of each component in the microwave dielectric ceramic material, the main ceramic materials include: MgO 33%, CaO 4.5%, SiO 2 10%, Nd 2 o 3 5.5% and TiO 2 47%;

[0091] The particle size of each component is 550nm.

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Abstract

The invention relates to the field of electronic ceramics, and provides a microwave dielectric ceramic material, a preparation method and application thereof, a microwave dielectric ceramic body, a preparation method and application of the microwave dielectric ceramic body, and a microwave device. The microwave dielectric ceramic material is mainly prepared from ceramic main materials and optionaladditives, the ceramic main materials comprise the specific weight percentage of MgO, CaO, SiO2, Nd2O3, Sm2O3 and TiO2, the additives comprise the specific weight percentage of oxide of R, R comprises one or more of Nb, Zn, Zr, Mn, Y, Ni, Cu, Mo or Al, wherein the sum of the weight percentage of all the components is 100%. The dielectric constant of the microwave dielectric ceramic body is continuously adjustable within 15-30, f*Q at the temperature of 25 DEG C is greater than 45000, the good temperature characteristics are achieved, the frequency temperature coefficients at the temperaturesof minus 40 DEG C, 25 DEG C and 110 DEG C are each close to zero, and temperature stability is high.

Description

technical field [0001] The invention relates to the field of electronic ceramics, in particular to a microwave dielectric ceramic material, a preparation method and application thereof, a microwave dielectric ceramic body, a preparation method and application thereof, and a microwave device. Background technique [0002] With the continuous development of modern communication technology, the requirements for miniaturization, integration and modularization of components are increasingly urgent, and higher requirements are put forward for microwave dielectric materials. Microwave dielectric ceramics have become the most active research on functional ceramics in recent years. one of the fields. Microwave refers to electromagnetic waves with a spectrum of 300MHz to 300GHz. Modern communication technology utilizes the characteristics of microwave frequency range, high frequency, and strong penetrability, and can carry out large-capacity, high-quality, and long-distance transmissi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/04C04B35/622C04B35/63
CPCC04B35/04C04B35/622C04B35/6303C04B2235/3208C04B2235/3224C04B2235/3225C04B2235/3232C04B2235/3256C04B2235/3284C04B2235/3418C04B2235/5445C04B2235/656C04B2235/6567
Inventor 杨月霞杨彬应红刘光明宋锡滨
Owner SHANDONG SINOCERA FUNCTIONAL MATERIAL CO LTD
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