CN104987070A - Temperature stable microwave dielectric ceramic with medium dielectric constant and preparation method of temperature stable microwave dielectric ceramic - Google Patents
Temperature stable microwave dielectric ceramic with medium dielectric constant and preparation method of temperature stable microwave dielectric ceramic Download PDFInfo
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- CN104987070A CN104987070A CN201510442106.1A CN201510442106A CN104987070A CN 104987070 A CN104987070 A CN 104987070A CN 201510442106 A CN201510442106 A CN 201510442106A CN 104987070 A CN104987070 A CN 104987070A
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Abstract
The invention discloses a temperature stable microwave dielectric ceramic material with medium dielectric constant. The chemical formula of the material is (Zn0.95Mg0.05)ZrNbTaO8. A preparation method of the ceramic material comprises the steps: firstly proportioning ZnO, MgO, ZrO2, Nb2O5 and Ta2O5 according to the chemical formula (Zn0.95Mg0.05)ZrNbTaO8, ball-milling, drying and screening the mixture, pre-sintering the mixture at 700-850 DEG C, and then ball-milling, drying and screening the mixture and pressing the mixture by a pressure to prepare a blank; and sintering the blank at 1150-1280 DEG C to prepare the microwave dielectric ceramic. According to the temperature stable microwave dielectric ceramic material disclosed by the invention, the dielectric constant epsilonr is 28.42-31.86, the quality factor Q*f is 85345-92745GHz, and the temperature coefficient of resonance frequency Tf is (-8.56-3.85)*10<-6>/DEG C. The preparation process is simplified, the time is shortened, and the energy cost is lowered.
Description
Technical field
The invention belongs to a kind of take composition as the ceramic composition of feature, particularly relates to a kind of with (Zn
0.95mg
0.05) ZrNbTaO
8for the microwave-medium ceramics and preparation method thereof with medium dielectric constant microwave medium, temperature stability of chemical formula.
Background technology
The development of modern communication technology, especially mobile communication, towards high reliability and small size future development, are had higher requirement to microwave dielectric material, and microwave-medium ceramics has become one of most active research field of function ceramics in recent years.Wherein, the research for temperature stability has become a large focus.Microwave device needs to work at different temperature, and will ensure the stability of its carrier signal function at different temperatures, just necessarily requires the resonant frequency of microwave dielectric material not vary with temperature, or change is less.Therefore, the temperature coefficient of resonance frequency of nearly zero just becomes the important of measurement material property
Along with the development of stupalith, for meeting different application, the novel material of various excellent performance continues to bring out.With ZnO-Nb
2o
5the intermediary's columbate microeave media ceramic studied centered by series microwave dielectric ceramic, receives and pays close attention to widely.(Zn of the present invention
0.95mg
0.05) ZrNbTaO
8for monocline composite microwave medium ceramic material, it has good microwave dielectric property, yet there are no relevant report of the present invention both at home and abroad.
Summary of the invention
Object of the present invention is for regulating ZnZrNb
2o
8the temperature coefficient of resonance frequency of microwave dielectric material, and improve quality factor further, adapts to electronic information technology constantly to the needs of high frequency and digitizing future development.There is provided a kind of with ZnO, MgO, ZrO
2, Nb
2o
5, Ta
2o
5for raw material, prepare a kind of (Zn with high quality factor by simple solid phase method
0.95mg
0.05) ZrNbTaO
8microwave dielectric ceramic materials.
The present invention is achieved by following technical solution.
A kind of medium dielectric constant microwave medium temperature-stabilized microwave medium ceramic material, its chemical formula is: (Zn
0.95mg
0.05) ZrNbTaO
8;
This microwave dielectric ceramic materials present method, concrete implementation step is as follows:
(1) by ZnO, MgO, ZrO
2, Nb
2o
5, Ta
2o
5stoichiometrically formula (Zn
0.95mg
0.05) ZrNbTaO
8prepare burden, powder is put into polyester tank, after adding deionized water and zirconium ball, ball milling 5 ~ 9 hours;
(2) raw material after step (1) ball milling is put into loft drier, in 100 ~ 120 DEG C of oven dry, then cross 40 mesh sieves;
(3) moderate oven put into by the powder after step (2) being sieved, and in 700 ~ 850 DEG C of pre-burnings, is incubated 4 ~ 8 hours.
(4) mixed by the powder after step (3) pre-burning, put into ball grinder, add zirconia ball and deionized water, ball milling 9 ~ 12 hours, sieves after oven dry, then is pressed into base substrate with powder compressing machine with the pressure of 5 ~ 9MPa;
(5) by the base substrate of step (4) in 1150 DEG C ~ 1280 DEG C sintering, be incubated 2 ~ 8 hours, make the microwave-medium ceramics with medium dielectric constant microwave medium.
Described step (1) adopts planetary ball mill to carry out ball milling, and drum's speed of rotation is 600 revs/min.
The blank diameter of described step (4) is 10mm, and thickness is 5mm.
The sintering temperature of described step (5) is 1220 DEG C.
The present invention has prepared a kind of novel microwave dielectric ceramic materials (Zn by simple solid phase method
0.95mg
0.05) ZrNbTaO
8.Its DIELECTRIC CONSTANT ε
rbe 28.42 ~ 31.86, quality factor q × f is 85345 ~ 92745GHz, temperature coefficient of resonance frequency τ
ffor-8.56 ~ 3.85 × 10
-6/ DEG C.This preparation method simplifies the preparation technology of material, saves time and energy cost.
Embodiment
The present invention is with ZnO (analytical pure), NiO (analytical pure), ZrO
2(analytical pure), Nb
2o
5(analytical pure), BaCO
3(analytical pure), CuO (analytical pure), H
3bO
3(analytical pure) is initial feed, prepares microwave-medium ceramics (Zn by simple solid phase method
0.95mg
0.05) ZrNbTaO
8, concrete implementation step is as follows:
1. by ZnO, MgO, ZrO
2, Nb
2o
5, Ta
2o
5stoichiometrically formula (Zn
0.95mg
0.05) ZrNbTaO
8prepare burden, powder proportioning is: 2.779053g ZnO, 0.0718g MgO, 4.7774g ZrO
2, 7.9422g Nb
2o
54.4292gTa
2o
5; The mixed powder of about 20g is put into polyester tank, adds 200ml deionized water, after adding the zirconium ball of 150g, ball milling 6 hours on planetary ball mill, rotating speed is 600 revs/min;
2. the raw material after ball milling is placed in loft drier respectively, in 100 DEG C of oven dry, then crosses 40 mesh sieves respectively;
3. the powder one after sieving is put into moderate oven, in 700 DEG C of pre-burnings, be incubated 4 hours;
4. mixed by the carrying out after step 3 pre-burning, put into ball grinder, add zirconia ball and deionized water, ball milling 12 hours, sieves after oven dry, then is pressed into base substrate with powder compressing machine with the pressure of 6MPa, and blank diameter is 10mm, and thickness is 5mm;
5. by green compact at 1150 ~ 1280 DEG C of sintering, be incubated 6 hours, make the microwave-medium ceramics with medium dielectric constant microwave medium.
By the microwave property of network analyzer test resulting product.
Related process parameters and the microwave dielectric property of the specific embodiment of the invention refer to table 1.
Table 1
Claims (4)
1. a medium dielectric constant microwave medium temperature-stabilized microwave medium ceramic material, its chemical formula is: (Zn
0.95mg
0.05) ZrNbTaO
8;
This microwave dielectric ceramic materials present method, concrete implementation step is as follows:
(1) by ZnO, MgO, ZrO
2, Nb
2o
5, Ta
2o
5stoichiometrically formula (Zn
0.95mg
0.05) ZrNbTaO
8prepare burden, powder is put into polyester tank, after adding deionized water and zirconium ball, ball milling 5 ~ 9 hours;
(2) raw material after step (1) ball milling is put into loft drier, in 100 ~ 120 DEG C of oven dry, then cross 40 mesh sieves;
(3) moderate oven put into by the powder after step (2) being sieved, and in 700 ~ 850 DEG C of pre-burnings, is incubated 4 ~ 8 hours.
(4) mixed by the powder after step (3) pre-burning, put into ball grinder, add zirconia ball and deionized water, ball milling 9 ~ 12 hours, sieves after oven dry, then is pressed into base substrate with powder compressing machine with the pressure of 5 ~ 9MPa;
(5) by the base substrate of step (4) in 1150 DEG C ~ 1280 DEG C sintering, be incubated 2 ~ 8 hours, make the microwave-medium ceramics with medium dielectric constant microwave medium.
2. medium dielectric constant microwave medium temperature-stabilized microwave medium ceramic material according to claim 1, is characterized in that, described step (1) adopts planetary ball mill to carry out ball milling, and drum's speed of rotation is 600 revs/min.
3. medium dielectric constant microwave medium temperature-stabilized microwave medium ceramic material according to claim 1, is characterized in that, the blank diameter of described step (4) is 10mm, and thickness is 5mm.
4. medium dielectric constant microwave medium temperature-stabilized microwave medium ceramic material according to claim 1, is characterized in that, the sintering temperature of described step (5) is 1220 DEG C.
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|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107777997A (en) * | 2017-09-06 | 2018-03-09 | 天津大学 | A kind of preparation method of the high Qf values microwave-medium ceramics of medium dielectric constant microwave medium |
| CN107903059A (en) * | 2017-11-03 | 2018-04-13 | 天津大学 | A kind of intermediate sintering temperature microwave-medium ceramics and preparation method thereof |
| CN111675531A (en) * | 2020-07-01 | 2020-09-18 | 山西省玻璃陶瓷科学研究所（有限公司） | BMT-BZT composite novel microwave dielectric ceramic material and preparation method thereof |
| CN112939599A (en) * | 2021-02-25 | 2021-06-11 | 电子科技大学 | Niobium-tantalum-zirconium-magnesium microwave dielectric ceramic material and preparation method thereof |
| CN115010490A (en) * | 2022-06-29 | 2022-09-06 | 安徽大学 | Ultralow-loss niobium zinc zirconate microwave dielectric ceramic material and preparation method thereof |
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| CN1195651A (en) * | 1997-04-09 | 1998-10-14 | 阿莫同有限公司 | Dielectric ceramic compositions |
| CN103936419A (en) * | 2014-04-23 | 2014-07-23 | 天津大学 | High-quality-factor and temperature-stable microwave dielectric ceramic material |
| CN104311024A (en) * | 2014-10-17 | 2015-01-28 | 中国矿业大学 | Microwave dielectric ceramic material with moderate dielectric constant and high quality factor and preparation method of microwave dielectric ceramic material |
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2015
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Patent Citations (3)
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| CN1195651A (en) * | 1997-04-09 | 1998-10-14 | 阿莫同有限公司 | Dielectric ceramic compositions |
| CN103936419A (en) * | 2014-04-23 | 2014-07-23 | 天津大学 | High-quality-factor and temperature-stable microwave dielectric ceramic material |
| CN104311024A (en) * | 2014-10-17 | 2015-01-28 | 中国矿业大学 | Microwave dielectric ceramic material with moderate dielectric constant and high quality factor and preparation method of microwave dielectric ceramic material |
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| BAOJIAN FU ET AL.: "Microwave dielectric properties of (1-x)ZnTa2O6-xMgNb2O6 ceramics", 《CERAMICS INTERNATIONAL》 * |
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| 张迎春: "《铌钽酸盐微波介质陶瓷材料》", 28 February 2005, 科学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107777997A (en) * | 2017-09-06 | 2018-03-09 | 天津大学 | A kind of preparation method of the high Qf values microwave-medium ceramics of medium dielectric constant microwave medium |
| CN107903059A (en) * | 2017-11-03 | 2018-04-13 | 天津大学 | A kind of intermediate sintering temperature microwave-medium ceramics and preparation method thereof |
| CN111675531A (en) * | 2020-07-01 | 2020-09-18 | 山西省玻璃陶瓷科学研究所（有限公司） | BMT-BZT composite novel microwave dielectric ceramic material and preparation method thereof |
| CN111675531B (en) * | 2020-07-01 | 2022-07-19 | 山西省玻璃陶瓷科学研究所（有限公司） | BMT-BZT composite novel microwave dielectric ceramic material and preparation method thereof |
| CN112939599A (en) * | 2021-02-25 | 2021-06-11 | 电子科技大学 | Niobium-tantalum-zirconium-magnesium microwave dielectric ceramic material and preparation method thereof |
| CN115010490A (en) * | 2022-06-29 | 2022-09-06 | 安徽大学 | Ultralow-loss niobium zinc zirconate microwave dielectric ceramic material and preparation method thereof |
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Application publication date: 20151021 |