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

A technology of microwave dielectric ceramics and microwave devices, applied in ceramics, inorganic insulators and other directions, can solve the problems of low dielectric constant and poor temperature stability, and achieve the effect of reducing the sintering temperature and making it easier to sinter

Active Publication Date: 2021-07-09
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 and its preparation method and application, microwave dielectric ceramic body and its preparation method and application, microwave device
  • Microwave dielectric ceramic material and its preparation method and application, microwave dielectric ceramic body and its preparation method and application, 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 thereof, and a microwave device. The microwave dielectric ceramic material is mainly prepared from ceramic main materials and optional additives: the ceramic main materials include MgO, CaO, SiO in specific weight percentages 2 、Nd 2 o 3 、Sm 2 o 3 and TiO 2 ; The additive includes oxides of R in a specific weight percentage, and R includes at least one of Nb, Zn, Zr, Mn, Y, Ni, Cu, Mo or Al; wherein, the sum of the weight percentages of each component is 100% . The dielectric constant of the above-mentioned microwave dielectric ceramic material is continuously adjustable between 15-30, f*Q>45000 at 25°C, and has good temperature characteristics. The temperature coefficient of frequency at -40°C, 25°C, and 110°C Close to zero, high temperature stability.

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 Patents(China)
IPC IPC(8): H01B3/12C04B35/04C04B35/622C04B35/63
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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