CN105254299A - Low-temperature sintered magnesium lithium niobate system microwave dielectric ceramic - Google Patents

Low-temperature sintered magnesium lithium niobate system microwave dielectric ceramic Download PDF

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CN105254299A
CN105254299A CN201510737945.6A CN201510737945A CN105254299A CN 105254299 A CN105254299 A CN 105254299A CN 201510737945 A CN201510737945 A CN 201510737945A CN 105254299 A CN105254299 A CN 105254299A
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microwave dielectric
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dielectric ceramic
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lithium magnesium
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张平
赵星宇
赵永贵
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Tianjin University
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Abstract

The invention discloses low-temperature sintered magnesium lithium niobate system microwave dielectric ceramic. The composition formula of the low-temperature sintered magnesium lithium niobate system microwave dielectric ceramic is Li3Mg2NbO6-xLBS, wherein the x is greater than or equal to 0.5 percent but is smaller than or equal to 3 percent; the LBS comprises 50 weight percent of Li2CO3, 40.24 weight percent of B2O3 and 9.76 weight percent of SiO2. Firstly, Li2CO3, MgO and Nb2O5 are mixed according to Li3Mg2NbO6, are subjected to ball grinding, drying and sieving and are pre-sintered at 1050 DEG C; the LBS with the mass fraction x being 0.5 percent to 3 percent is added; then, secondary ball grinding and drying are carried out; paraffin with the weight percentage being 8 to 10 percent is added for granulation; particles are pressed into a blank; the blank is sintered at 800 to 950 DEG C; the lithium niobate system microwave dielectric ceramic is prepared. The low-temperature sintered magnesium lithium niobate system microwave dielectric ceramic has the advantages that the sintering temperature can be successfully lowered to 875 DEG C; the dielectric constant is 14.8; the quality factor is 86,721 GHz; the resonant frequency temperature coefficient is -15.50 ppm/DEG C; the preparation process is simple; no process pollution exists; the low-temperature sintered magnesium lithium niobate system microwave dielectric ceramic belongs to an LTCC (low-temperature co-fired ceramic) microwave dielectric material with good prospects.

Description

A kind of low temperature sintering lithium magnesium niobium series microwave dielectric ceramic
Technical field
The invention belongs to a kind of take composition as the ceramic composition of feature, particularly a kind of novel low-temperature sintering Li 3mg 2nbO 6series microwave dielectric ceramic and preparation method thereof.
Background technology
Developing rapidly of present mobile communication, promotes all kinds of microwave mobile communication terminating unit fast-developing to the direction of miniaturization, lightweight, multifunction and cost degradation.Can effectively reduce device volume with the multi-layer structure design based on LTCC (low-temperatureco-firedceramic, LTCC) technology, be realize components and parts to miniaturization, integrated and modular important channel.LTCC technology adopts multilayered structure, requires that microwave dielectric material can realize burning altogether with high conductivity and cheap silver electrode (961 DEG C).Therefore, require that the sintering temperature for the microwave dielectric material be used on microwave device will below 950 DEG C.Usual interpolation low melting point oxide or glass sintering auxiliary agent are a kind of modal methods reducing sintering temperature to reduce the sintering temperature of microwave dielectric material.
Li 3mg 2nbO 6be a kind of novel microwave dielectric material with superior microwave dielectric property, its specific inductivity is 16.8, Qf value is 79,643GHz, and temperature coefficient of resonance frequency is-27.2ppm/ DEG C, but sintering temperature is 1250 DEG C.Its higher sintering temperature causes it can not apply in LTCC technology.The present invention adopts conventional solid-state method, under the condition of adding fusing assistant, prepares low sintering Li 3mg 2nbO 6microwave-medium ceramics.
Therefore, the present invention adopts conventional solid-state method, under the condition of adding fusing assistant, prepares low sintering Li 3mg 2nbO 6microwave-medium ceramics, to meet its utilization in LTCC technology.
Summary of the invention
Object of the present invention is with Li 2cO 3, MgO, Nb 2o 5for main raw material, additional a small amount of LBS (50wt%Li 2cO 3– 40.24wt%B 2o 3– 9.76wt%SiO 2) glass as sintering aid, make lithium magnesium niobium series microwave dielectric ceramic sintering temperature successfully be reduced to less than 950 DEG C, keep the microwave dielectric property of its excellence simultaneously.
The present invention is achieved by following technical solution:
A kind of low temperature sintering lithium magnesium niobium series microwave dielectric ceramic, it consists of Li 3mg 2nbO 6– xLBS, wherein 0.5%≤x≤3%; LBS is 50wt%Li 2cO 3– 40.24wt%B 2o 3– 9.76wt%SiO 2;
The preparation method of above-mentioned lithium magnesium niobium pottery, has following steps:
(1) by Li 2cO 3, MgO, Nb 2o 5raw material, by chemical formula Li 3mg 2nbO 6prepare burden, in raw material: deionized water: the ratio of abrading-ball=1:16:15 adds in polyester tank, ball milling 4 ~ 6 hours on ball mill;
(2) raw material after step (1) ball milling is placed in loft drier, in 80 ~ 130 DEG C of oven dry, crosses 40 mesh sieves after drying, obtain evengranular powder;
(3) powder step (2) mixed was 1050 DEG C of pre-burnings 4 hours;
(4) ceramic powder after (3) step calcines puts into polyester tank, and additional massfraction is that the LBS of 0.5%-3% mixes with the powder after calcining, and described LBS is 50wt%Li 2cO 3– 40.24wt%B 2o 3– 9.76wt%SiO 2, after then adding deionized water and zirconia ball, ball milling 6-8 hour on ball mill; After oven dry in ceramic powder added weight per-cent be 8 ~ 10% paraffin carry out granulation as tackiness agent, cross 80 mesh sieves, then be shaped to base substrate with powder compressing machine;
(5) will step (4) green compact in 800 ~ 950 DEG C of sintering, be incubated 2 ~ 5 hours, obtained lithium magnesium niobium series microwave dielectric ceramic;
(6) microwave dielectric property of the microwave-medium ceramics that test is obtained.
The Li of described step (1) 2cO 3, MgO, Nb 2o 5the purity of raw material is greater than 99.9%.
Described step (3) calcined temperature is 1050 DEG C.
The x=1% of described step (4).
The operating pressure of the tabletting machine of described step (4) is 4MPa, and base substrate specification is the right cylinder of Φ 10mm × 5mm.
The sintering temperature of described step (5) is 875 DEG C, is incubated 4 hours.
The present invention is with Li 3mg 2nbO 6based on microwave-medium ceramics, additional LBS (50wt%Li 2cO 3– 40.24wt%B 2o 3– 9.76wt%SiO 2) sintering aid, successfully its sintering temperature is reduced to 875 DEG C, has prepared that specific inductivity is 14.8, quality factor 86,721GHz, temperature coefficient of resonance frequency are the microwave-medium ceramics of-15.50ppm/ DEG C.Preparation technology of the present invention is simple, and process is pollution-free, improves its temperature coefficient of resonance frequency and quality factor, is a kind of up-and-coming LTCC microwave dielectric material.
Embodiment
The present invention adopts purity to be greater than the chemical feedstocks Li of 99.9% 2cO 3, MgO, Nb 2o 5preparation Li 3mg 2nbO 6microwave-medium ceramics.
The present invention is by Li 2cO 3, MgO, Nb 2o 5chemical formula Li pressed by raw material 3mg 2nbO 6prepare burden, materials: deionized water: the ratio of abrading-ball=1:16:15 adds in polyester tank, ball milling 4 ~ 8 hours; Raw material after ball milling is placed in infrared drying oven in 80 ~ 130 DEG C of oven dry, crosses 40 mesh sieves, then in 1000 ~ 1100 DEG C of calcinings 4 hours; Again the ceramic powder after calcining is put into ball grinder, take the LBS (50wt%Li that mass percent is 0.5%-3% 2cO 3– 40.24wt%B 2o 3– 9.76wt%SiO 2) sintering aid adds the powder after calcining, then adds zirconia ball and deionized water ball milling 6 ~ 12 hours post-dryings; Again in ceramic powder after the drying added weight per-cent be 8 ~ 10% paraffin wax binder carry out granulation, after crossing 80 mesh sieves, under the pressure of 4MPa, powder being pressed into diameter with powder compressing machine is 10mm, and thickness is the green compact of 5mm; By green compact at 800 ~ 950 DEG C of sintering, be incubated 2 ~ 5 hours, obtained microwave-medium ceramics; Finally by the microwave dielectric property of network analyzer and dependence test fixture test article.
This specific embodiment of the invention is as follows.
Embodiment 1:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 0.5% LBS-0.1000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 875 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 2:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 1% LBS-0.2000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 875 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 3:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 1.5% LBS-0.3000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 875 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 4:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 2% LBS-0.4000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 875 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 5:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 2.5% LBS-0.5000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 875 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 6:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 3% LBS-0.6000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 875 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 7:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 1% LBS-0.2000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 800 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 8:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 1% LBS-0.2000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 825 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 9:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 1% LBS-0.2000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 850 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 10:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 1% LBS-0.2000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 900 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Embodiment 11:
1. according to microwave-medium ceramics component Li 3mg 2nbO 6, claim Li 2cO 3-6.8344g, MgO-4.9705g, Nb 2o 5--8.1951g prepares burden, altogether 20g; Mixed powder adds in polyester tank, after adding 160ml deionized water and 150g zirconium ball, and ball milling 4 hours on planetary ball mill, drum's speed of rotation is 1000 revs/min;
2. the raw material after ball milling is placed in loft drier, dries in 120 DEG C and cross 40 mesh sieves, obtaining evengranular powder;
3. powder is calcined 4 hours in 1050 DEG C;
4. by calcining after powder put into polyester tank, then take massfraction be 1% LBS-0.2000g with calcining after powder mix, secondary ball milling 6 hours, discharging post-drying, mistake 40 mesh sieves; Then add weight percent be 8% paraffin carry out granulation as tackiness agent, and cross 80 mesh sieves; Be pressed into diameter for 10mm with powder compressing machine with the pressure of 4MPa again, thickness is the base substrate of 5mm;
5. by base substrate in 925 DEG C of sintering, be incubated 4 hours, obtained microwave-medium lithium magnesium niobium pottery;
Finally, by network analyzer and dependence test fixture test gained sample microwave property.
Every key parameter and the dielectric properties detected result of invention specific embodiment refer to table 1.
Table 1
The detection method of the embodiment of the present invention is as follows;
1. the diameter of sample and thickness use milscale to measure.
2. by Agilent8720ES network analyzer, adopt and start to rob the dielectric constant that parallel plate method measures prepared cylindrical ceramic material, test fixture is put into the measurement that ESPECMC-710F type high/low temperature circulation incubator carries out temperature coefficient of resonance frequency, temperature range is that 25-85 DEG C of test frequency is within the scope of 12-14GHz.
3. the quality adopting enclosed cell method to measure prepared cylindrical ceramic sample because of.

Claims (6)

1. a low temperature sintering lithium magnesium niobium series microwave dielectric ceramic, it consists of Li 3mg 2nbO 6– xLBS, wherein 0.5%≤x≤3%; LBS is 50wt%Li 2cO 3– 40.24wt%B 2o 3– 9.76wt%SiO 2.
The preparation method of above-mentioned lithium magnesium niobium pottery, has following steps:
(1) by Li 2cO 3, MgO, Nb 2o 5raw material, by chemical formula Li 3mg 2nbO 6prepare burden, in raw material: deionized water: the ratio of abrading-ball=1:16:15 adds in polyester tank, ball milling 4 ~ 6 hours on ball mill;
(2) raw material after step (1) ball milling is placed in loft drier, in 80 ~ 130 DEG C of oven dry, crosses 40 mesh sieves after drying, obtain evengranular powder;
(3) powder step (2) mixed was 1050 DEG C of pre-burnings 4 hours;
(4) ceramic powder after (3) step calcines puts into polyester tank, and additional massfraction is that the LBS of 0.5%-3% mixes with the powder after calcining, and described LBS is 50wt%Li 2cO 3– 40.24wt%B 2o 3– 9.76wt%SiO 2, after then adding deionized water and zirconia ball, ball milling 6-8 hour on ball mill; After oven dry in ceramic powder added weight per-cent be 8 ~ 10% paraffin carry out granulation as tackiness agent, cross 80 mesh sieves, then be shaped to base substrate with powder compressing machine;
(5) will step (4) green compact in 800 ~ 950 DEG C of sintering, be incubated 2 ~ 5 hours, obtained lithium magnesium niobium series microwave dielectric ceramic;
(6) microwave dielectric property of the microwave-medium ceramics that test is obtained.
2. a kind of novel low temperature sintering lithium magnesium niobium series microwave dielectric ceramic according to claim 1, is characterized in that, the Li of described step (1) 2cO 3, MgO, Nb 2o 5the purity of raw material is greater than 99.9%.
3. a kind of novel low temperature sintering lithium magnesium niobium series microwave dielectric ceramic according to claim 1, it is characterized in that, described step (3) calcined temperature is 1050 DEG C.
4. a kind of novel low temperature sintering lithium magnesium niobium series microwave dielectric ceramic according to claim 1, is characterized in that, the x=1% of described step (4).
5. a kind of novel low temperature sintering lithium magnesium niobium series microwave dielectric ceramic according to claim 1, it is characterized in that, the operating pressure of the tabletting machine of described step (4) is 4MPa, and base substrate specification is the right cylinder of Φ 10mm × 5mm.
6. a kind of novel low temperature sintering lithium magnesium niobium series microwave dielectric ceramic according to claim 1, it is characterized in that, the sintering temperature of described step (5) is 875 DEG C, is incubated 4 hours.
CN201510737945.6A 2015-11-03 2015-11-03 Low-temperature sintered magnesium lithium niobate system microwave dielectric ceramic Pending CN105254299A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105693241A (en) * 2016-02-22 2016-06-22 济南大学 High-quality-factor lithium-magnesium-niobium microwave dielectric ceramic and preparation method thereof
CN105859289A (en) * 2016-06-13 2016-08-17 天津大学 Low-temperature sintering low-loss magnesium-lithium-niobate-series microwave dielectric ceramic
CN106116574A (en) * 2016-06-13 2016-11-16 天津大学 A kind of preparation method of low temperature sintering lithium magnesium niobium series microwave dielectric ceramic
CN106699179A (en) * 2016-12-09 2017-05-24 陈忠燕 Low-dielectric low-loss LTCC microwave dielectric ceramic material and preparation method thereof
CN106810209A (en) * 2017-01-12 2017-06-09 天津大学 A kind of high q-factor lithium magnesium titanium series microwave dielectric ceramic
CN106938933A (en) * 2017-02-28 2017-07-11 天津大学 A kind of high-quality factor microwave medium ceramic and preparation method thereof
CN107235711A (en) * 2017-06-15 2017-10-10 西安邮电大学 Temperature-stable metaantimmonic acid magnesium lithium-based microwave medium composite ceramics and preparation method thereof
CN111302795A (en) * 2020-02-07 2020-06-19 天津大学 Lithium-magnesium-niobium-aluminum-tungsten microwave dielectric ceramic and preparation method thereof
CN114180963A (en) * 2021-12-07 2022-03-15 无锡市高宇晟新材料科技有限公司 Low-temperature co-fired ceramic material and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1903786A (en) * 2006-08-01 2007-01-31 浙江大学 Environmental protection low temperature sintered microwave medium ceramic material and its preparation method
CN101260001A (en) * 2008-02-29 2008-09-10 上海大学 High-Q microwave dielectric ceramic material and preparing method thereof
CN102531570A (en) * 2011-12-31 2012-07-04 嘉兴佳利电子股份有限公司 Low-temperature sintering microwave dielectric ceramic material with high Q value and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1903786A (en) * 2006-08-01 2007-01-31 浙江大学 Environmental protection low temperature sintered microwave medium ceramic material and its preparation method
CN101260001A (en) * 2008-02-29 2008-09-10 上海大学 High-Q microwave dielectric ceramic material and preparing method thereof
CN102531570A (en) * 2011-12-31 2012-07-04 嘉兴佳利电子股份有限公司 Low-temperature sintering microwave dielectric ceramic material with high Q value and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JAE-HWAN PARK ET AL.: "Low-fire dielectric compositions with permittivity 20–60 for LTCC applications", 《MATERIALS CHEMISTRY AND PHYSICS》 *
TIANWEN ZHANG ET AL.: "Effect of Li2O–V2O5 addition on the sintering behavior and microwave dielectric properties of Li3(Mg1-xZnx)2NbO6 ceramics", 《CERAMICS INTERNATIONAL》 *

Cited By (11)

* Cited by examiner, † Cited by third party
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CN105693241A (en) * 2016-02-22 2016-06-22 济南大学 High-quality-factor lithium-magnesium-niobium microwave dielectric ceramic and preparation method thereof
CN105693241B (en) * 2016-02-22 2018-05-04 济南大学 High quality factor lithium magnesium niobium series microwave dielectric ceramic and preparation method thereof
CN105859289A (en) * 2016-06-13 2016-08-17 天津大学 Low-temperature sintering low-loss magnesium-lithium-niobate-series microwave dielectric ceramic
CN106116574A (en) * 2016-06-13 2016-11-16 天津大学 A kind of preparation method of low temperature sintering lithium magnesium niobium series microwave dielectric ceramic
CN106699179A (en) * 2016-12-09 2017-05-24 陈忠燕 Low-dielectric low-loss LTCC microwave dielectric ceramic material and preparation method thereof
CN106810209A (en) * 2017-01-12 2017-06-09 天津大学 A kind of high q-factor lithium magnesium titanium series microwave dielectric ceramic
CN106938933A (en) * 2017-02-28 2017-07-11 天津大学 A kind of high-quality factor microwave medium ceramic and preparation method thereof
CN107235711A (en) * 2017-06-15 2017-10-10 西安邮电大学 Temperature-stable metaantimmonic acid magnesium lithium-based microwave medium composite ceramics and preparation method thereof
CN107235711B (en) * 2017-06-15 2019-10-18 西安邮电大学 Temperature-stable metaantimmonic acid magnesium lithium-based microwave medium composite ceramics and preparation method thereof
CN111302795A (en) * 2020-02-07 2020-06-19 天津大学 Lithium-magnesium-niobium-aluminum-tungsten microwave dielectric ceramic and preparation method thereof
CN114180963A (en) * 2021-12-07 2022-03-15 无锡市高宇晟新材料科技有限公司 Low-temperature co-fired ceramic material and preparation method thereof

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