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Microwave ceramic SrO-ZnO(MgO)-TiO2 and preparation method thereof

A kind of microwave ceramics, 0 high sintering temperature and other problems

Active Publication Date: 2017-05-24
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the sintering temperature of most ceramic dielectric materials with excellent performance is relatively high, and it is necessary to vigorously develop low-temperature sintered microwave ceramics.

Method used

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  • Microwave ceramic SrO-ZnO(MgO)-TiO2 and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The microwave ceramic SrO-ZnO(MgO)-TiO 2 The chemical expression is 0.9[SrO-(Zn 0.1 Mg 0.9 )O]-0.1TiO 2 , its preparation method is:

[0042] Preparation of Microwave Ceramics SrO-ZnO(MgO)-TiO Using the Raw Materials and Sintering Aids Above 2 method, the method is carried out as follows:

[0043] Step 1, high-purity SrO, ZnO, MgO and TiO 2 According to SrO:ZnO:MgO:TiO 2 =0.9:0.09:0.81:0.1 molar ratio proportioning takes raw materials;

[0044] Step 2, put the raw materials in step 1 into a planetary ball mill, add deionized water and zirconia balls, ball mill for 8 hours, and then dry the ball milled raw materials in an electric blast drying oven at 110°C. The dried powder is passed through a 50-mesh sieve to obtain powder with uniform particles;

[0045] Step 3, heating the powder treated in step 2 to 1000°C and keeping it warm for 2 hours to obtain the pre-fired material;

[0046] Step 4, the calcined material processed through step 3 is put into the ball mi...

Embodiment 2

[0050] The microwave ceramic SrO-ZnO(MgO)-TiO 2 The chemical expression is 0.8[SrO-(Zn 0.9 Mg 0.1 )O]-0.2TiO 2 , its preparation method is:

[0051] Preparation of Microwave Ceramics SrO-ZnO(MgO)-TiO Using the Raw Materials and Sintering Aids Above 2 method, the method is carried out as follows:

[0052] Step 1, high-purity SrO, ZnO, MgO and TiO 2 According to SrO:ZnO:MgO:TiO 2 =0.8:0.72:0.08:0.2 molar ratio proportioning takes raw materials;

[0053] Step 2, put the raw materials in step 1 into a planetary ball mill, add deionized water and zirconia balls, ball mill for 2 hours, and then dry the ball milled raw materials in an electric blast drying oven at 110°C, The dried powder is passed through a 50-mesh sieve to obtain powder with uniform particles;

[0054] Step 3, heating the powder treated in step 2 to 1100°C and keeping it warm for 8 hours to obtain pre-burned material;

[0055] Step 4, the calcined material processed through step 3 is put into the ball mill,...

Embodiment 3

[0059] The microwave ceramic SrO-ZnO(MgO)-TiO 2 The chemical expression is 0.86[SrO-(Zn 0.5 Mg 0.5 )O]-0.14TiO 2 , its preparation method is:

[0060] Preparation of Microwave Ceramics SrO-ZnO(MgO)-TiO Using the Raw Materials and Sintering Aids Above 2 method, the method is carried out as follows:

[0061] Step 1, high-purity SrO, ZnO, MgO and TiO 2 According to SrO:ZnO:MgO:TiO 2 =0.86:0.43:0.43:0.14 molar ratio proportioning takes raw materials;

[0062] Step 2, put the raw materials in step 1 into a planetary ball mill, add deionized water and zirconia balls, ball mill for 4 hours, and then dry the ball milled raw materials in an electric blast drying oven at 110°C. The dried powder is passed through a 50-mesh sieve to obtain powder with uniform particles;

[0063] Step 3, heating the powder treated in step 2 to 1050°C and keeping it warm for 4 hours to obtain pre-burned material;

[0064] Step 4, the calcined material processed through step 3 is put into the ball m...

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Abstract

The invention provides a microwave ceramic SrO-ZnO(MgO)-TiO2 and a preparation method thereof. The chemical formula of the microwave ceramic SrO-ZnO(MgO)-TiO2 is (1-z)[SrO-xZnO-yMgO]-zTiO2, wherein x is more than 0 and less than 1, x+y is equal to 1.0, and z is equal to 0.1-0.2 in molar ratio content; and SrO, ZnO, MgO and TiO2 are used as raw materials, and an auxiliary agent accounting for 2.5-5% of the mass of the raw materials is added according to a molar ratio of SrO:ZnO:MgO:TiO2 of (1-z):x(1-z):y(1-z):z to prepare the microwave ceramic. The ceramic provided by the invention is relatively low in sintering temperature, moderate in dielectric constant, relatively high in quality factor, and small and continuously adjustable in temperature coefficient of resonance frequency, and can be applied to microwave dielectric resonators and filters.

Description

technical field [0001] The invention relates to the field of electronic materials, in particular to a microwave ceramic SrO-ZnO(MgO)-TiO 2 And system of law. Background technique [0002] Microwave dielectric ceramics refer to low-loss, temperature-stable information functional ceramic materials suitable for microwave frequency bands (300MHz ~ 3000GHz), widely used in resonators, filters, capacitors, oscillators, duplexers, dielectric waveguides, substrates and antennas, etc. , is the key material of modern microwave communication technologies such as mobile communication, satellite communication, global satellite positioning system (GPS), military radar, wireless local area network (WLAN) and Internet of Things (IOT), and it is important for the miniaturization of microwave components and the improvement of device reliability. Selectivity is important. In recent years, with the rapid development of microwave communication technology, microwave dielectric ceramics have bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453C04B35/622
Inventor 石锋
Owner SHANDONG UNIV OF SCI & TECH
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