CN105000882A - Low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material - Google Patents
Low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material Download PDFInfo
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- CN105000882A CN105000882A CN201510444033.XA CN201510444033A CN105000882A CN 105000882 A CN105000882 A CN 105000882A CN 201510444033 A CN201510444033 A CN 201510444033A CN 105000882 A CN105000882 A CN 105000882A
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Abstract
The invention discloses a low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material. The chemical formula of the microwave dielectric ceramic material is 0.6 MgMoO4+0.4TiO2. MgO and MoO3 are blended according to the stoichiometric equation MgMoO4, dried at the temperature of 100 DEG C to 120 DEG C after being subjected to ball mill and then screened; then, presintering is conducted at the temperature of 700 DEG C to 850 DEG C, and TiO2 powder is presintered at the temperature of 800 DEG C to 950 DEG C; the two kinds of powder are blended according to the stoichiometric equation 0.6 MgMoO4+0.4TiO2, and a green body is prepared in a pressed mode after ball mill, drying and screening; the green body is sintered at the temperature of 800 DEG C to 950 DEG C, and microwave dielectric ceramic is obtained. According to the low-inherent-sintering-temperature low-loss-temperature stable microwave dielectric ceramic material, the electric constant epsilon r ranges from 8.17 to 9.78, the quality factor Qf ranges from 41585 GHz to 53557 GHz, and the temperature coefficient tau f of the resonance frequency ranges from -75.45*10<-6>/DEG C to -62.87*10<-6>/DEGC. The preparation process is simplified, and the time cost and the energy cost are saved.
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 0.6MgMoO
4+ 0.4TiO
2there is sintering temperature and low, microwave-medium ceramics of medium dielectric constant microwave medium and preparation method thereof for chemical formula.
Background technology
Electronic technology walks to more microminiaturized, integrated, surface-assembled, multidimensional and high frequency etc. gradually along with the develop rapidly of 21 century wireless communication technology.LTCC (Low Temperature Co-fired Ceramics is called for short LTCC) technology is the critical path promoting this development trend.LTCC technology mainly comprises following three aspects: material, design and technique and equipment.Wherein material is the basis producing LTCC device.Concerning microwave dielectric material, the major requirement of LTCC technology is as follows: lower sintering temperature (less than 950 DEG C), suitable specific inductivity, lower dielectric loss (higher quality factor q value) and nearly zero temperature coefficient of resonance frequency.
Current great majority have the microwave-medium ceramics (as: BaTi of excellent microwave dielectric property
4o
9, Ba
2ti
9o
20deng) sintering temperature all higher, generally all more than 1300 DEG C, far away higher than the fusing point of Cu, Ag, be difficult to meet low temperature co-fired requirement.In order to reduce the sintering temperature of microwave dielectric ceramic materials, generally in existing material, add a certain amount of low melting point oxide or glass etc., but the material higher for those intrinsic sintering temperatures, often need to add a large amount of low melting point sintering aids and could reduce its sintering temperature, and damage in various degree can be brought to microwave dielectric property like this, as loss increases, temperature factor increase etc., so that the low temperature of material and excellent microwave dielectric property are difficult to have both.But for the microwave-medium ceramics of low intrinsic sintering temperature, because its intrinsic sintering temperature is lower in sintering process, also can keep the microwave dielectric property of material excellence simultaneously.So, explore the material of novel low intrinsic sintering temperature, become the focus of microwave dielectric material research in recent years.
Summary of the invention
Object of the present invention is the MgMoO regulating low intrinsic sintering temperature
4the temperature coefficient of resonance frequency of microwave-medium ceramics, adapts to electronic information technology constantly to the needs of high frequency and digitizing future development.With MgO, MoO
3, TiO
2for raw material, prepare a kind of 0.6MgMoO with high quality factor by simple solid phase method
4+ 0.4TiO
2microwave dielectric ceramic materials.
The present invention is achieved by following technical solution.
A kind of low intrinsic sintering temperature low-loss temperature-stabilized microwave medium ceramic material, its chemical formula is: 0.6MgMoO
4+ 0.4TiO
2;
The preparation method of this microwave dielectric ceramic materials, concrete implementation step is as follows:
(1) by MgO, MoO
3stoichiometrically formula MgMoO
4prepare burden; Powder is put into polyester tank, after adding deionized water and zirconium ball, ball milling 4 ~ 8 hours;
(2) powder after step (1) ball milling is put into loft drier, in 100 ~ 120 DEG C of oven dry, then cross 40 mesh sieves;
(3) step (2) is dried, sieve after powder put into moderate oven, in 700 ~ 850 DEG C of pre-burnings, be incubated 4 ~ 8 hours, separately by TiO
2powder, in 800 ~ 950 DEG C of pre-burnings, is incubated 2 ~ 4 hours;
(4) by two kinds of powder stoichiometrically formula 0.6MgMoO after step (3) pre-burning
4+ 0.4TiO
2prepare burden, 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 800 DEG C ~ 950 DEG C sintering, be incubated 2 ~ 8 hours, make the microwave-medium ceramics of low-loss temperature-stabilized.
Described step (1) adopts planetary ball mill to carry out ball milling, and drum's speed of rotation is 600 revs/min.
The green compact diameter of described step (4) is 10mm, and thickness is 5mm.
The preferred sintering temperature of described step (5) is 900 DEG C.
The present invention has prepared a kind of novel microwave dielectric ceramic materials 0.6MgMoO by simple solid phase method
4+ 0.4TiO
2.Its DIELECTRIC CONSTANT ε
rbe 8.17 ~ 9.78, quality factor q f is 41585 ~ 53557GHz, temperature coefficient of resonance frequency τ
ffor-75.45 ~-62.87 × 10
-6/ DEG C.This invention simplifies preparation technology, save time cost and energy cost.
Embodiment
The present invention is with MgO (analytical pure), MoO
3(analytical pure), TiO
2(analytical pure) is initial feed, prepares microwave-medium ceramics 0.6MgMoO by simple solid phase method
4+ 0.4TiO
2.Concrete implementation step is as follows:
1. by MgO, MoO
3stoichiometrically formula MgMoO
4prepare burden, powder proportioning is: 3.2813g MgO, 11.7186g MoO
3, put into polyester tank by after above-mentioned powder mixing, add 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, in 100 DEG C of oven dry, then crosses 40 mesh sieves;
3. putting into moderate oven by drying the powder after sieving, in 750 DEG C of pre-burnings, being incubated 4 hours, separately by TiO
2in 900 DEG C of pre-burnings, be incubated 3 hours;
4. by kind of the powder of two after step 3 pre-burning stoichiometrically formula 0.6MgMoO
4+ 0.4TiO
2prepare burden, 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;
5. by base substrate at 800 ~ 950 DEG C of sintering, be incubated 6 hours, make the microwave-medium ceramics of low-loss temperature-stabilized.
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 low intrinsic sintering temperature low-loss temperature-stabilized microwave medium ceramic material, its chemical formula is: 0.6MgMoO
4+ 0.4TiO
2;
The preparation method of this microwave dielectric ceramic materials, concrete implementation step is as follows:
(1) by MgO, MoO
3stoichiometrically formula MgMoO
4prepare burden; Powder is put into polyester tank, after adding deionized water and zirconium ball, ball milling 4 ~ 8 hours;
(2) powder after step (1) ball milling is put into loft drier, in 100 ~ 120 DEG C of oven dry, then cross 40 mesh sieves;
(3) step (2) is dried, sieve after powder put into moderate oven, in 700 ~ 850 DEG C of pre-burnings, be incubated 4 ~ 8 hours, separately by TiO
2powder, in 800 ~ 950 DEG C of pre-burnings, is incubated 2 ~ 4 hours;
(4) by two kinds of powder stoichiometrically formula 0.6MgMoO after step (3) pre-burning
4+ 0.4TiO
2prepare burden, 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 800 DEG C ~ 950 DEG C sintering, be incubated 2 ~ 8 hours, make the microwave-medium ceramics of low-loss temperature-stabilized.
2. the low intrinsic sintering temperature low-loss temperature-stabilized microwave medium ceramic material of one according to claim 1, is characterized by, and described step (1) adopts planetary ball mill to carry out ball milling, and drum's speed of rotation is 600 revs/min.
3. the low intrinsic sintering temperature low-loss temperature-stabilized microwave medium ceramic material of one according to claim 1, is characterized by, and the green compact diameter of described step (4) is 10mm, and thickness is 5mm.
4. the low intrinsic sintering temperature low-loss temperature-stabilized microwave medium ceramic material of one according to claim 1, is characterized by, and the preferred sintering temperature of described step (5) is 900 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904966A (en) * | 2017-01-23 | 2017-06-30 | 山东科技大学 | Microwave complex phase ceramic Li2MoO4‑TiO2And preparation method thereof |
| CN107619277A (en) * | 2017-09-24 | 2018-01-23 | 天津大学 | The low-temperature sintering microwave medium material of Dope nano-power fluxing agent |
| CN112830780A (en) * | 2021-01-15 | 2021-05-25 | 华中科技大学 | Regulating agent, LTCC microwave dielectric material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173782A (en) * | 2011-03-11 | 2011-09-07 | 西安交通大学 | Molybdenum-based and titanium-based temperature stabilized microwave dielectric ceramic material and preparation method thereof |
| CN102515746A (en) * | 2011-12-16 | 2012-06-27 | 同济大学 | Microwave dielectrically-adjustable material of barium strontium titanate composite molybdate and preparation method for same |
| CN103044025A (en) * | 2013-01-14 | 2013-04-17 | 西安交通大学 | Molybdenum-based low-temperature sintering temperature stable type microwave dielectric ceramic material and preparation method thereof |
| CN104177085A (en) * | 2014-08-27 | 2014-12-03 | 西安交通大学 | Molybdenum-based temperature-stable microwave medium ceramic and preparation method thereof |
-
2015
- 2015-07-24 CN CN201510444033.XA patent/CN105000882A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173782A (en) * | 2011-03-11 | 2011-09-07 | 西安交通大学 | Molybdenum-based and titanium-based temperature stabilized microwave dielectric ceramic material and preparation method thereof |
| CN102515746A (en) * | 2011-12-16 | 2012-06-27 | 同济大学 | Microwave dielectrically-adjustable material of barium strontium titanate composite molybdate and preparation method for same |
| CN103044025A (en) * | 2013-01-14 | 2013-04-17 | 西安交通大学 | Molybdenum-based low-temperature sintering temperature stable type microwave dielectric ceramic material and preparation method thereof |
| CN104177085A (en) * | 2014-08-27 | 2014-12-03 | 西安交通大学 | Molybdenum-based temperature-stable microwave medium ceramic and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904966A (en) * | 2017-01-23 | 2017-06-30 | 山东科技大学 | Microwave complex phase ceramic Li2MoO4‑TiO2And preparation method thereof |
| CN107619277A (en) * | 2017-09-24 | 2018-01-23 | 天津大学 | The low-temperature sintering microwave medium material of Dope nano-power fluxing agent |
| CN112830780A (en) * | 2021-01-15 | 2021-05-25 | 华中科技大学 | Regulating agent, LTCC microwave dielectric material and preparation method thereof |
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Application publication date: 20151028 |