Low-temperature-sintered composite microwave dielectric ceramic material and preparation method thereof

A technology of microwave dielectric ceramics and low-temperature sintering, applied in the field of electronic ceramics and its manufacturing, can solve the problems of high sintering temperature and inability to co-fire low-melting point metals, etc., and achieve the effect of excellent dielectric properties

Active Publication Date: 2017-09-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, its sintering temperature is still high (1150 ° C ~ 1200 ° C), and it cannot be directly co-fi...

Method used

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  • Low-temperature-sintered composite microwave dielectric ceramic material and preparation method thereof
  • Low-temperature-sintered composite microwave dielectric ceramic material and preparation method thereof
  • Low-temperature-sintered composite microwave dielectric ceramic material and preparation method thereof

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] (Zn 1-x co x ) 0.5 Ti 0.5 (Nb 1-y Ta y )O 4 , x=0.3, y=0.4.

[0023] Step 1. Mix the ingredients according to the parameters in the table, grind the planetary ball for 6 hours according to the mass ratio of powder: zirconium ball: deionized water 1:5:2, then dry at 100°C, sieve with a 60-mesh sieve, and finally Pre-fired for 3 hours in the air atmosphere at 1000°C.

[0024] Step 2. Mix the raw materials of the fever reducer according to the parameters in the table, ball mill for 7 hours, dry and sieve, pre-fire at 800°C for 3 hours, then heat at 1200°C for 3 hours to melt the glass slag, and crush the glass slag into powder Produce a fever reducer.

[0025] Step 3. Add the prepared fever reducer powder to the pre-fired material according to the mass percentage of 0.5-3wt.% of the pre-fired material, and perform secondary ball m...

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Abstract

The invention belongs to the fields of electronic ceramics and manufacturing thereof, and relates to a low-temperature-sintered composite microwave dielectric ceramic material and a preparation method thereof. The material provided by the invention is prepared from the following components in percentage by mass: 97 to 99.5 percent of (Zn1-xCox)0.5Ti0.5(Nb1-yTay)O4 base material and 0.5 to 3 percent of sintering reducer, wherein x is equal to 0.05 to 0.95; y is equal to 0.05 to 0.95; a primary crystalline phase is a ZnTiNb2O8 phase; a secondary crystalline phase is a Zn0.17Nb0.33Ti0.5O2 phase. According to the low-temperature-sintered composite microwave dielectric ceramic material, the ion doping of Co2O3 and Ta2O5 is carried out on the basis of Zn0.5Ti0.5NbO4; 0.5wt.% to 3wt.% of the sintering reducer is doped on a system subjected to the ion doping; the sintering densification is carried out at a sintering temperature lower than 900 DEG C; on the premise that the microwave dielectric performance is guaranteed to be excellent, a corrected [tau]f value of the system can be regulated; a dielectric constant is 20 to 34; the loss is not more than 10<-4>; a frequency temperature coefficient is stable that [tau]f is not less than -10ppm/DEG C, but is not more than +10ppm/DEG; a preparation process is simple; the industrialized production is easy.

Description

technical field [0001] The invention belongs to the field of electronic ceramics and its manufacture, and relates to a low-temperature sintered composite microwave dielectric ceramic material and a preparation method thereof. Background technique [0002] With the rapid development of the mobile communication industry, the demand for microwave dielectric ceramics is increasing. As the basic material of modern communication systems, microwave dielectric ceramic materials are widely used in dielectric resonators, filters, dielectric waveguide circuits, microwave capacitors, duplex Microwave components such as devices and antennas are suitable for satellite communication and mobile communication base stations. [0003] Low Temperature Co-fired Ceramics LTCC (Low Temperature Co-fired Ceramics) technology can integrate multiple passive components of different types and performances in one package, and is the mainstream technology of passive integration. However, LTCC technology ...

Claims

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Application Information

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IPC IPC(8): C04B35/495
CPCC04B35/495C04B2235/3232C04B2235/3251C04B2235/3275C04B2235/3284C04B2235/96
Inventor 李恩竹杨鸿宇孙怀宝张树人
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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