CN105272221A - Ceramic composition and preparation method thereof - Google Patents
Ceramic composition and preparation method thereof Download PDFInfo
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- CN105272221A CN105272221A CN201510783907.4A CN201510783907A CN105272221A CN 105272221 A CN105272221 A CN 105272221A CN 201510783907 A CN201510783907 A CN 201510783907A CN 105272221 A CN105272221 A CN 105272221A
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Abstract
The invention provides a ceramic composition. The ceramic composition is prepared from, by weight, 6-12 parts of B2O3, 16-20 parts of Al2O3 and 30-40 parts of SrTiO3. By the adoption of the technical scheme, the ceramic composition which has the features that the shrinkage behavior of a ceramic sintering body can be controlled easily during calcination and meanwhile the dielectric property is improved can be obtained, and the ceramic composition which has the features that control over the shrinkage behavior and the dielectric property can be achieved at the same time can be obtained. Particularly, the ceramic composition which has the features that the relative dielectric constant epsilon r is larger than 45, the Q value is larger than 800, the insulation resistance log IR is larger than 12, the shrinkage behavior can be controlled easily during calcination and the sinterability is good can be obtained.
Description
Technical field
The present invention relates to a kind of ceramic composition and preparation method thereof.
Background technology
High frequency dielectric material chinaware, is extensively used in such as dielectric material syntonizer and MIC dielectric material substrate etc. in recent years.In the high frequency of this kind with in dielectric material chinaware, in order to realize miniaturization, require relative permittivity ε r and Q value large.
On the other hand, in high frequency with in dielectric material chinaware, if use dystectic tungsten and molybdenum in conductor material, ratio resistance then due to these refractory metals is large, therefore, particularly there is the shortcoming producing gauge in the high frequency characteristic of ceramic multi-layer baseplate, and price is high.Therefore, as conductor material, require to use the low resistances such as Ag and Cu and the low melting point metal of cheapness.
But, obtain ceramic sintered bodies to conductor material and stupalith be calcined simultaneously, need stupalith to calcine at than the low-melting temperature of these low melting point metals.
Therefore, actively carrying out the research of the low temperature calcination stupalith of the matrix material as ceramics component and glass ingredient, advancing and use the practical of the ceramic multi-layer baseplate of this material.
Such as, in patent documentation 1, propose a kind of ceramic material composition, wherein, comprise: 10 ~ 45 % by weight by xBaO-yTiO
2-zReO
3/2the BaO-TiO that (wherein, x, y and z represent % by mole, 8≤x≤18,52.5≤y≤65 and 20≤z≤40, and x+y+z=100, Re are rare earth element) represents
2-ReO
3/2class ceramic composition, the aluminum oxide of 5 ~ 40 % by weight, the B of 4 ~ 17.5 % by weight
2o
3, 28 ~ 50 % by weight SiO
2, 0 ~ 20 % by weight Al
2o
3and the MO of 36 ~ 50 % by weight (wherein, MO is at least one be selected from CaO, MgO, SrO and BaO), comprise the pyrex composition of 40 ~ 65 % by weight, and described BaO-TiO
2-ReO
3/2the total amount of class ceramic composition and described aluminum oxide is more than 35 % by weight.
In this patent documentation 1, by making it contain pyrex composition, the Shrinkage behavior of pottery when calcining can be suppressed, in addition, because glass viscosity is high, therefore, can suppress and other low temperature calcination substrate phase mutual diffusion.In addition, by making it contain above-mentioned ceramic composition, can obtain having the ceramic material composition that relative permittivity ε r is about the high relative dielectric constant of 15.
But the ceramic material composition of above-mentioned patent documentation 1, although relative permittivity ε r is higher, is about 15, in order to tackle the requirement of the more miniaturization such as current module commodity, need higher relative permittivity ε r.
But, in order to improve relative permittivity ε r, needing the content reducing glass composition, improving the content of the ceramic powder be made up of filler.On the other hand, when the content of glass composition reduces, because the mobility of glass composition reduces, therefore easy contraction is become by calcination processing ceramic sintered bodies.Therefore, in order to easily control Shrinkage behavior when calcining, need the content increasing glass composition.That is, there is the control of Shrinkage behavior and the situation of high relative dielectric constant of the ceramic sintered bodies be difficult to when realizing calcining.
The present invention carries out in view of the foregoing, its object is to provide to make that dielectric characteristics is compared with the past to be significantly improved and can guarantee the ceramic composition of reliability, the ceramic green sheet using this ceramic composition and ceramic electronic components while the Shrinkage behavior when controlling calcining.
Summary of the invention
The present inventor conducts in-depth research to achieve these goals, found that, except the pyrex of specific composition, adds the SrTiO that relative permittivity ε r is high in specialized range
3or CaTiO
3it is made to contain specific sintering aid composition in scope in addition below specified amount, thus, while the Shrinkage behavior of ceramic sintered bodies during easy suppression sintering, relative permittivity ε r can be obtained and be more than 50 and the low temperature calcination ceramic composition with good dielectric characteristics of Q value more than 900.
In order to achieve the above object, present invention employs following technical scheme:
A kind of ceramic composition, described ceramic composition is made up of following component by weight:
Described B
2o
3content be such as 6,7,8,9,10 or 11.
Described Al
2o
3content be such as 16.5,17,17.5,18,18.5,19 or 19.5
The content of described CaO is such as 3,4,5,6,7,8,9,10,11,12,13 or 14.
Described SrTiO
3or content be such as, 31,32,33,34,35,36,37,38,40,41,42,43 or 44.
Preferably, a kind of ceramic composition, described ceramic composition is made up of following component by weight:
Ceramic green sheet in the present invention, above-mentioned ceramic composition is configured as sheet.
Ceramic electronic components in the present invention, has the 1st ceramic layer be made up of the sintered compact of above-mentioned ceramic composition.
Invention effect
The ceramic composition that while the present invention can obtain the Shrinkage behavior of ceramic sintered bodies when easily controlling calcining by employing technique scheme, dielectric characteristics improves, can obtain realizing the control of above-mentioned Shrinkage behavior and the ceramic composition of dielectric characteristics simultaneously.Specifically, the ceramic composition that the coking property of Shrinkage behavior when relative permittivity ε r is more than 50, Q value is more than 900, insulation resistance logIR is the characteristic of more than 12 and easily controls calcining is good can be obtained having.
Therefore, the more high-quality of miniaturization and the good ceramic green sheet of dielectric characteristics and the ceramic electronic components such as current module commodity can be realized tackling.
Embodiment
Technical scheme of the present invention is further illustrated below by embodiment.
Embodiment 1
A kind of ceramic composition, described ceramic composition is made up of following component by weight:
Embodiment 2
A kind of ceramic composition, described ceramic composition is made up of following component by weight:
Embodiment 3
A kind of ceramic composition, described ceramic composition is made up of following component by weight:
Comparative example 1
All the other are identical with embodiment 1, except SrTiO
3or/and CaTiO
3content be 50.
Comparative example 2
All the other are identical with embodiment 1, except B
2o
3content be 25.
Performance test is carried out to the ceramic composition of embodiment 1 ~ 3, the relative permittivity ε r of the ceramic composition of embodiment 1 ~ 3 is more than 50 and Q value more than 900, and the relative permittivity of the ceramic composition of comparative example 1 and 2 is 40, and Q value is 750, is starkly lower than embodiment 1 ~ 3.
Applicant states, the present invention illustrates method detailed of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned method detailed, does not namely mean that the present invention must rely on above-mentioned method detailed and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (4)
1. a ceramic composition, described ceramic composition is made up of following component by weight:
2. ceramic composition as claimed in claim 1, described ceramic composition is made up of following component by weight:
3. ceramic green sheet, the ceramic composition described in one of claim 1-2 is configured as sheet.
4. ceramic electronic components, has the 1st ceramic layer be made up of the sintered compact of the ceramic composition one of claim 1-2 Suo Shu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510783907.4A CN105272221A (en) | 2015-11-14 | 2015-11-14 | Ceramic composition and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510783907.4A CN105272221A (en) | 2015-11-14 | 2015-11-14 | Ceramic composition and preparation method thereof |
Publications (1)
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|---|---|
| CN105272221A true CN105272221A (en) | 2016-01-27 |
Family
ID=55142144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510783907.4A Pending CN105272221A (en) | 2015-11-14 | 2015-11-14 | Ceramic composition and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311647A (en) * | 2017-06-30 | 2017-11-03 | 周远华 | A kind of ceramic composition and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326742A (en) * | 2014-10-22 | 2015-02-04 | 华文蔚 | Ceramic composition and preparation method thereof |
-
2015
- 2015-11-14 CN CN201510783907.4A patent/CN105272221A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326742A (en) * | 2014-10-22 | 2015-02-04 | 华文蔚 | Ceramic composition and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311647A (en) * | 2017-06-30 | 2017-11-03 | 周远华 | A kind of ceramic composition and preparation method thereof |
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Application publication date: 20160127 |