CN105036732A - Low-dielectric-loss microwave electronic ceramic material - Google Patents
Low-dielectric-loss microwave electronic ceramic material Download PDFInfo
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- CN105036732A CN105036732A CN201510526484.8A CN201510526484A CN105036732A CN 105036732 A CN105036732 A CN 105036732A CN 201510526484 A CN201510526484 A CN 201510526484A CN 105036732 A CN105036732 A CN 105036732A
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Abstract
The invention discloses a low-dielectric-loss microwave electronic ceramic material of which the expression is aZnO. bSiO2.cTiO2.dCaCO3.eAl2O3, wherein a, b, c, d and e respectively independently represent molar rates; and 35mol%<=a<=45mol%, 30mol%<=b<=35mol%, 0mol%<=c<=10mol%, 10mol%<=d<=20mol%, 0mol%<=e<=10mol%, and a+b+c+d+e=100mol%. The dielectric constant of the low-dielectric-loss microwave electronic ceramic material is 7-10; the low-dielectric-loss microwave electronic ceramic material has low loss (Qf is greater than 100000 GHz) and approximately zero temperature coefficient of resonance frequency; and by using the low-dielectric-loss microwave electronic ceramic, the dielectric resonator, filter and other microwave components can be more suitable for application in higher frequency and higher power, thereby being beneficial to improvement of the frequency and temperature stability of the device.
Description
Technical field
The invention belongs to microwave dielectric ceramic materials manufacturing technology field, be specifically related to a kind of low-dielectric loss microwave electron stupalith.
Background technology
Microwave electron pottery is the class new function stupalith grown up nearly decades, being applied in microwave frequency band (mainly 300MHz ~ 30GHz) circuit as dielectric material and completing one or more functions, is the critical material manufacturing the microwave components such as wave filter, resonator, vibrator, transposer.In recent years, along with the develop rapidly of the modern communication technologys such as mobile communication, satellite communications, Global Positioning System (GPS), Bluetooth technology and WLAN (wireless local area network) (WLAN), microwave technology also turns to higher frequency, namely towards the wider millimeter wave of available band and sub-millimeter wave future development.Specific inductivity is low, has high Q × f value and the research of the microwave dielectric ceramic materials of temperature coefficient of resonance frequency nearly zero is subject to extensive concern simultaneously.This type of material has been widely used in the fields such as satellite communication, guided missile remote control and Global Positioning System (GPS) antenna at present, these Application Areass, except requiring that pottery has except lower dielectric loss, low temperature coefficient of resonance frequency, also require that pottery has less specific inductivity in order to reduce the delay of signal.
Although current existing Al
2o
3, MgAlO
4on medium with low dielectric constant pottery, but have that sintering temperature is high, preparation difficulty and the shortcoming such as temperature coefficient of resonance frequency is larger.
Summary of the invention
The object of the invention is to solve the problem, provide a kind of specific inductivity to be 7 ~ 10, there is the microwave electron stupalith of low-loss and good temperature stability simultaneously.
For solving the problems of the technologies described above, the expression formula of low-dielectric loss microwave electron stupalith of the present invention is aZnO.bSiO
2.cTiO
2.dCaCO
3.eAl
2o
3,
Wherein a, b, c, d and e independently represent molar ratio, and meet:
35mol％≤a≤45mol％，30mol％≤b≤35mol％，0mol％≤c≤10mol％，10mol％≤d≤20mol％，0mol％≤e≤10mol％，a+b+c+d+e＝100mol％。
The preferred content of each composition is: a=40mol%, b=32mol%, c=5mol%, d=18mol%, e=5mol%.
Low-dielectric loss microwave electron stupalith of the present invention, its specific inductivity is 7 ~ 10, have low-loss (Qf > 100000GHz) and near-zero resonance frequency temperature coefficient simultaneously, utilize dielectric constant microwave ceramic medium provided by the invention, the microwave device such as dielectric resonator and wave filter can be made to be applicable to higher frequency and more powerful application, to be conducive to the frequency stability of temperature improving device.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further:
Low-dielectric loss microwave electron stupalith of the present invention is by aZnO.bSiO
2.cTiO
2.dCaCO
3.eAl
2o
3the composition of chemical formulation, wherein a, b, c, d and e independently represent molar ratio, and meet: 35mol%≤a≤45mol%, 30mol%≤b≤35mol%, 0mol%≤c≤10mol%, 10mol%≤d≤20mol%, 0mol%≤e≤10mol%, a+b+c+d+e=100mol%.
Wherein, the composition of embodiment 1 ~ 5 stupalith is as shown in table 1:
| Embodiment | ZnO | SiO 2 | TiO 2 | CaCO 3 | Al 2O 3 |
| 1 | 35 | 35 | 0 | 20 | 10 |
| 2 | 38 | 33 | 7 | 14 | 8 |
| 3 | 40 | 32 | 5 | 18 | 5 |
| 4 | 42 | 30 | 4 | 15 | 9 |
| 5 | 45 | 35 | 10 | 10 | 0 |
Table 1
Above-mentioned low-dielectric loss microwave electron stupalith can be prepared by the following method:
Step one, take ZnO, SiO by certain mol proportion rate
2, TiO
2, CaCO
3and Al
2o
3as starting material;
Add water in step 2, starting material in step one and zirconia balls carries out ball milling 12h, after ball milling terminates, dry, sieve, obtain powder;
Step 3, by the temperature lower calcination 2 ~ 4h of powder at 1150 ~ 1300 DEG C, obtain calcining powder;
Step 4, in calcining powder, add water and zirconia balls, and then add binding agent, dispersion agent and releasing agent, ball milling 12 ~ 24h, granulation;
Step 5, grain step 4 made are pressed into finished product, and sinter 2 ~ 4h in the temperature range of 1300 ~ 1450 DEG C, obtain low-dielectric loss microwave electron stupalith.
Analyze by experiment, above-mentioned obtained low-dielectric loss microwave electron stupalith, its specific inductivity is 7 ~ 10, have low-loss (Qf > 100000GHz) and near-zero resonance frequency temperature coefficient simultaneously.Utilize dielectric constant microwave ceramic medium provided by the invention, the microwave device such as dielectric resonator and wave filter can be made to be applicable to higher frequency and more powerful application, be conducive to the frequency stability of temperature improving device.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's principle of the present invention, should be understood to that protection scope of the present invention is not limited to so special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combination of not departing from essence of the present invention according to these technology enlightenment disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (2)
1. a low-dielectric loss microwave electron stupalith, is characterized in that: its specific inductivity is 7 ~ 10, and expression formula is aZnO.bSiO
2.cTiO
2.dCaCO
3.eAl
2o
3, wherein a, b, c, d and e independently represent molar ratio, and meet: 35mol%≤a≤45mol%, 30mol%≤b≤35mol%, 0mol%≤c≤10mol%, 10mol%≤d≤20mol%, 0mol%≤e≤10mol%, a+b+c+d+e=100mol%.
2. microwave electron stupalith according to claim 1, is characterized in that: a=40mol%, b=32mol%, c=5mol%, d=18mol%, e=5mol%.
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| CN201510526484.8A CN105036732A (en) | 2015-08-25 | 2015-08-25 | Low-dielectric-loss microwave electronic ceramic material |
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|---|---|---|---|
| CN201510526484.8A CN105036732A (en) | 2015-08-25 | 2015-08-25 | Low-dielectric-loss microwave electronic ceramic material |
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ID=54443781
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765820A (en) * | 2005-09-09 | 2006-05-03 | 华中科技大学 | Low dielectric constant microwave dielectric ceramic material |
| CN103803954A (en) * | 2013-12-24 | 2014-05-21 | 无锡鑫圣慧龙纳米陶瓷技术有限公司 | Microwave medium ceramic material with low dielectric constant and preparation method thereof |
| CN103864414A (en) * | 2014-01-28 | 2014-06-18 | 江苏南瓷绝缘子股份有限公司 | Low-dielectric-constant microwave dielectric ceramic and preparation method thereof |
| CN103922714A (en) * | 2014-03-18 | 2014-07-16 | 福建火炬电子科技股份有限公司 | Low dielectric constant multi-layer capacitor ceramic material and preparation method thereof |
-
2015
- 2015-08-25 CN CN201510526484.8A patent/CN105036732A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1765820A (en) * | 2005-09-09 | 2006-05-03 | 华中科技大学 | Low dielectric constant microwave dielectric ceramic material |
| CN103803954A (en) * | 2013-12-24 | 2014-05-21 | 无锡鑫圣慧龙纳米陶瓷技术有限公司 | Microwave medium ceramic material with low dielectric constant and preparation method thereof |
| CN103864414A (en) * | 2014-01-28 | 2014-06-18 | 江苏南瓷绝缘子股份有限公司 | Low-dielectric-constant microwave dielectric ceramic and preparation method thereof |
| CN103922714A (en) * | 2014-03-18 | 2014-07-16 | 福建火炬电子科技股份有限公司 | Low dielectric constant multi-layer capacitor ceramic material and preparation method thereof |
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Application publication date: 20151111 |