CN103288447A - Dielectric ceramic - Google Patents
Dielectric ceramic Download PDFInfo
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- CN103288447A CN103288447A CN2012100516552A CN201210051655A CN103288447A CN 103288447 A CN103288447 A CN 103288447A CN 2012100516552 A CN2012100516552 A CN 2012100516552A CN 201210051655 A CN201210051655 A CN 201210051655A CN 103288447 A CN103288447 A CN 103288447A
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- media ceramic
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- bao
- tio
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Abstract
The invention provides a dielectric ceramic, which comprises the following raw materials in parts by mol: 0.5-1 part of BaO, 4-6 parts of TiO2 and 0.1-0.4 part of SrO. The dielectric constant of the dielectric ceramic can be as high as 40, and simultaneously the Q value is as high as 30000; and furthermore, the dielectric ceramic has the advantages of compactness, uniformity, good mechanical property and the like and is suitable for being popularized and used in the field of filters.
Description
[technical field]
The present invention relates to the stupalith field, relate in particular to a kind of media ceramic.
[background technology]
Media ceramic is to be used in the components and parts such as dielectric filter, electrical condenser, requires to have higher dielectric constant and lower tangent of the dielectric loss angle value usually.Along with the new development of antenna microwave device, specific inductivity and the loss of media ceramic there has been higher requirement.Conventional media ceramic comprises barium titanate and some oxide compounds, but seldom can realize specific inductivity greater than 30, the Q value is greater than 10000 product.
[summary of the invention]
At above-mentioned defective, the present invention solves the problems of the technologies described above the technical scheme that adopts and is: construct a kind of media ceramic, in molfraction, its raw material comprises 0.5～1 part of BaO, 4～6 parts of TiO
2With 0.1～0.4 part of SrO.
In media ceramic of the present invention, described raw material comprises 0.6～0.8 part of BaO by the mole umber, 4.7～5.5 parts of TiO
2With 0.18～0.32 part of SrO.
In media ceramic of the present invention, described raw material comprises 0.8 part of BaO by the mole umber, 5 parts of TiO
2With 0.2 part of SrO.
In media ceramic of the present invention, described ceramic raw material also comprises Al
2O
3, and comprise 0.5～1 part of BaO, 4～6 parts of TiO by the described raw material of mole umber
2, 0.1～0.4 part of SrO and 0.1～0.4 part of Al
2O
3
In media ceramic of the present invention, described ceramic raw material comprises 0.6～0.8 part of BaO by the mole umber, 4.7～5.5 parts of TiO
2, 0.18～0.32 part of SrO and 0.18～0.30 part of Al
2O
3
In media ceramic of the present invention, described ceramic raw material comprises 0.8 part of BaO by the mole umber, 5 parts of TiO
2, 0.2 part of SrO and 0.25 part of Al
2O
3
Beneficial effect of the present invention is: media ceramic specific inductivity of the present invention can reach about 40, and the Q value is greater than 30000; And compact structure, evenly, satisfactory mechanical property, can the widespread use microwave device for example on filter resonance.
[embodiment]
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The present invention relates to a kind of media ceramic, its raw material comprises 0.5～1 part of BaO by the mole umber, 4～6 parts of TiO
2With 0.1～0.4 part of SrO.Therefore main component of the present invention is BaO and TiO
2, because this composition can improve the specific inductivity of media ceramic.A little SrO can control thermostability and reduce temperature and float, and in addition, if mechanical property is had requirement, can add 0.1～0.4 part of Al on year-on-year basis by the mole umber
2O
3When sintering, the granularity of each composition all is 0.5～1 micron.
The substrate that utilizes the media ceramic of above-mentioned prescription to make, specific inductivity can reach about 40, and the Q value can be greater than 30000; And the media ceramic densification of preparing, evenly, satisfactory mechanical property, can be widely used on the microwave device such as dielectric filter.
Embodiment one:
With the BaO of 0.8mol, the TiO of 5mol
2With the SrO of 0.2mol utilize hot isostatic pressing technique under 1250～1300 ℃ of temperature, pressure 180～200MPa condition with above-mentioned materials sintering 3 hours, prepare required media ceramic; The specific inductivity of the media ceramic that obtains after testing, is 40, the Q value is 30148; Also can adopt the spark plasma sintering technique to prepare above-mentioned media ceramic.
Embodiment two:
With the BaO of 0.5mol, the TiO of 4mol
2With the SrO of 0.1mol utilize hot isostatic pressing technique under 1300～1350 ℃ of temperature, pressure 200～220MPa condition with above-mentioned materials sintering 4 hours, prepare required media ceramic; The specific inductivity of the media ceramic that obtains after testing, is 41, the Q value is 31021; Also can adopt the spark plasma sintering technique to prepare above-mentioned media ceramic.
Embodiment three:
With the BaO of 1mol, the TiO of 6mol
2With the SrO of 0.4mol utilize hot isostatic pressing technique under 1300～1350 ℃ of temperature, pressure 200～220MPa condition with above-mentioned materials sintering 4 hours, prepare required media ceramic; The specific inductivity of the media ceramic that obtains after testing, is 41, the Q value is 30024; Also can adopt the spark plasma sintering technique to prepare above-mentioned media ceramic.
Embodiment four:
With the BaO of 0.8mol, the TiO of 5mol
2, the SrO of 0.2mol and the Al of 0.25mol
2O
3Utilize hot isostatic pressing technique under 1320～1350 ℃ of temperature, pressure 210～230MPa condition with above-mentioned materials sintering 4 hours, prepare required media ceramic; The specific inductivity of the media ceramic that obtains after testing, is 40, the Q value is 30284; Also can adopt the spark plasma sintering technique to prepare above-mentioned media ceramic.
Embodiment five:
With the BaO of 0.6mol, the TiO of 5.6mol
2, the SrO of 0.18mol and the Al of 0.32mol
2O
3Utilize hot isostatic pressing technique under 1320～1350 ℃ of temperature, pressure 210～230MPa condition with above-mentioned materials sintering 4 hours, prepare required media ceramic; The specific inductivity of the media ceramic that obtains after testing, is 40, the Q value is 31006; Also can adopt the spark plasma sintering technique to prepare above-mentioned media ceramic.
Embodiment six:
With the BaO of 0.9mol, the TiO of 4.8mol
2, the SrO of 0.30mol and the Al of 0.2mol
2O
3Utilize hot isostatic pressing technique under 1320～1350 ℃ of temperature, pressure 210～230MPa condition with above-mentioned materials sintering 4 hours, prepare required media ceramic; The specific inductivity of the media ceramic that obtains after testing, is 42, the Q value is 30165; Also can adopt the spark plasma sintering technique to prepare above-mentioned media ceramic.
In the above-described embodiments, only the present invention has been carried out exemplary description, but those skilled in the art can carry out various modifications to the present invention after reading present patent application under the situation that does not break away from the spirit and scope of the present invention.
Claims (6)
1. media ceramic, it is characterized in that: in molfraction, its raw material comprises 0.5～1 part of BaO, 4～6 parts of TiO
2With 0.1～0.4 part of SrO.
2. media ceramic according to claim 1 is characterized in that, described raw material comprises 0.6～0.8 part of BaO by the mole umber, 4.7～5.5 parts of TiO
2With 0.18～0.32 part of SrO.
3. media ceramic according to claim 2 is characterized in that, described raw material comprises 0.8 part of BaO by the mole umber, 5 parts of TiO
2With 0.2 part of SrO.
4. media ceramic according to claim 1 is characterized in that, described ceramic raw material also comprises Al
2O
3, and comprise 0.5～1 part of BaO, 4～6 parts of TiO by the described raw material of mole umber
2, 0.1～0.4 part of SrO and 0.1～0.4 part of Al
2O
3
5. media ceramic according to claim 4 is characterized in that, described ceramic raw material comprises 0.6～0.8 part of BaO by the mole umber, 4.7～5.5 parts of TiO
2, 0.18～0.32 part of SrO and 0.18～0.30 part of Al
2O
3
6. media ceramic according to claim 5 is characterized in that, described ceramic raw material comprises 0.8 part of BaO by the mole umber, 5 parts of TiO
2, 0.2 part of SrO and 0.25 part of Al
2O
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210051655.2A CN103288447B (en) | 2012-03-01 | 2012-03-01 | A kind of media ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210051655.2A CN103288447B (en) | 2012-03-01 | 2012-03-01 | A kind of media ceramic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103288447A true CN103288447A (en) | 2013-09-11 |
| CN103288447B CN103288447B (en) | 2017-03-29 |
Family
ID=49090056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210051655.2A Active CN103288447B (en) | 2012-03-01 | 2012-03-01 | A kind of media ceramic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103288447B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001089234A (en) * | 1999-09-27 | 2001-04-03 | Murata Mfg Co Ltd | Dielectric ceramic composition and multilayer ceramic parts |
| CN101613200A (en) * | 2009-07-21 | 2009-12-30 | 西安交通大学 | A kind of low-temperature sintered microwave dielectric ceramic material and preparation method thereof |
-
2012
- 2012-03-01 CN CN201210051655.2A patent/CN103288447B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001089234A (en) * | 1999-09-27 | 2001-04-03 | Murata Mfg Co Ltd | Dielectric ceramic composition and multilayer ceramic parts |
| CN101613200A (en) * | 2009-07-21 | 2009-12-30 | 西安交通大学 | A kind of low-temperature sintered microwave dielectric ceramic material and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN103288447B (en) | 2017-03-29 |
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Effective date of registration: 20210423 Address after: 518057 2 / F, software building, No.9, Gaoxin Middle Road, Nanshan District, Shenzhen, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 518034. A, 18B, CIC international business center, 1061 Mei Xiang Road, Shenzhen, Guangdong, Futian District Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |