High-performance ceramic material and preparation method thereof

A ceramic material, high-performance technology, applied in the field of ceramic materials, can solve the problems of unstable price of rare earth raw materials, unsatisfactory Qf value, and small dielectric constant.

Inactive Publication Date: 2019-03-19
嘉兴实新企业服务有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The development of the modern communication industry has higher and higher requirements for the quality factor of dielectric materials. The microwave dielectric materials with high Qf values ​​that have been commercialized at present mainly include Ba(Mg1 / 3Ta2 / 3)O3(BMT), Ba(Zn1 / 3Ta2 / 3)O3 (BZT), LnAlO3-CaTiO3 series, Zr-Ti-Sn-O series and ZrTiO4-ZnNb2O6 series, etc. Although the Qf of BMT and BZT in these materials is relatively high, the raw material Ta2O5 used is expensive, and the sintering temperature High; although the sintering temperature of LnAlO3-CaTiO3 system is low, the Qf value cannot fully meet the development needs of the industry, and the price of some rare earth raw materials is unstable; although the Qf of Zr-Ti-Sn-O system and ZrTiO4-ZnNb2O6 High, but the dielectric constant is small

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Accurately weigh BaCO3 0.11mol, CaCO3 0.008mol, La2O3 0.19mol, Sm2O3 0.012mol and TiO2 0.42mol with a purity greater than 99.95%, pour them into a resin ball mill jar, add deionized water and zirconium balls; the weight of the three The ratio is: material: zirconium ball: deionized water = 1:2:1.5; ball mill in the ball mill for 24 hours to ensure uniform mixing; after discharging, put the slurry into an oven and dry it at 120°C to obtain powder;

[0035] (2) Pass the dried powder through a 40-mesh sieve, then calcinate at 1200°C for 3 hours, and cool with the furnace to obtain a ceramic powder;

[0036] (3) Dissolve 1wt / % chemically pure zinc alkoxide (Zn) and 1.5wt / % chemically pure magnesium alkoxide (Mg) in absolute ethanol, add appropriate amount of diethanolamine and mix well, then add deionized water , through hydrolysis, polycondensation reaction, and then forming a gel to prepare nano-scale liquid phase Zn additives and Mg additives with a particle size of...

Embodiment 2

[0040] BaCO3 0.108mol, SrCO3 0.008mol, La2O3 0.192mol, Sm2O3 0.0102mol, Pm2O3 0.008mol, TiO2 0.418mol, 2wt / % zinc alkoxide (Zn) and 1wt / % nickel alkoxide (Ni). The preparation method is the same as in Example 1 to obtain a high-performance ceramic material.

Embodiment 3

[0042] BaCO3 0.118 mol, La2O3 0.194 mol, Eu2O3 0.0122 mol, TiO2 0.420 mol, 2.5 wt / % zinc alkoxide (Zn) and 1 wt / % tin alkoxide (Sn). The preparation method is the same as in Example 1 to obtain a high-performance ceramic material.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a high-performance ceramic material. The material is prepared from mMO-yLn2O3-zTiO2 and metal nano-grade additives, wherein M includes Ba and one or two of Ca and Sr; Ln includes La and one or more of Sm, Pm, Nd, Pr and Eu; the metal nano-grade additive includes Zn and one or more of Zr, Sn, Mg, Ni, Co and W; and the sum of x, y and z is 1. The invention further provides a preparation method of the ceramic material. The microwave medium ceramic material has a dielectric constant of 46-48, a relatively high quality factor of 35000-50000GHz, and has the resonance frequencytemperature coefficient being adjustable between negative 12-12ppm / DEG C.

Description

technical field [0001] The invention relates to the field of ceramic materials, in particular to a high-performance ceramic material and a preparation method thereof. Background technique [0002] Microwave resonators and filters used in 3G and 4G base stations must have good frequency selection characteristics, bandwidth, miniaturization and low cost. Although the cost of the existing metal cavity resonator is low, its unloaded Q value is very low (~6000 GHz), and the temperature stability of the resonant frequency is poor. [0003] Dielectric resonators usually have the characteristics of high no-load quality factor, small and adjustable frequency temperature coefficient, and small volume, so they are more and more widely used. The corresponding high-performance ceramic materials must simultaneously have (1) high dielectric constant (30-60), (2) high quality factor (Qf≥40000GHz), (3) near-zero adjustable resonant frequency temperature coefficient. [0004] Although the h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/468C04B35/622
CPCC04B35/4682C04B35/622C04B2235/3208C04B2235/3213C04B2235/3224C04B2235/3227C04B2235/40C04B2235/401C04B2235/404C04B2235/405C04B2235/6562C04B2235/6567C04B2235/96
Inventor 吴强德
Owner 嘉兴实新企业服务有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap