CN103288440A - Ceramic composite material and super material prepared from same - Google Patents
Ceramic composite material and super material prepared from same Download PDFInfo
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- CN103288440A CN103288440A CN2012100502672A CN201210050267A CN103288440A CN 103288440 A CN103288440 A CN 103288440A CN 2012100502672 A CN2012100502672 A CN 2012100502672A CN 201210050267 A CN201210050267 A CN 201210050267A CN 103288440 A CN103288440 A CN 103288440A
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Abstract
The invention provides a ceramic composite material and a super material prepared from the same. The super material comprises a substrate and microstructures which are periodically arranged on the substrate in an array mode, wherein the substrate is prepared from the ceramic composite material; and the ceramic composite material comprises the following components in percentage by mass: 70-76% of CaTiO3 main crystal phase, 20-24% of TiO2 and 2-6% of La2O3. The dielectric constant of the substrate prepared from the ceramic composite material can reach 45 or so; and meanwhile, the lost tangent angle can be lowered to 0.0001 or so. The substrate of the super material prepared from the ceramic composite material is compact and uniform, has the advantages of favorable mechanical properties, high dielectric constant and low loss, and is suitable for popularization and use in the field of super materials.
Description
[technical field]
The present invention relates to super material field, relate in particular to the super material of a kind of ceramic composite and preparation thereof.
[background technology]
Super material refers to artificial composite structure or the matrix material that some have the not available extraordinary physical properties of natural materials.Structurally ordered design by on the key physical yardstick of material can break through the restriction of some apparent natural law, thereby obtains to exceed the meta-materials function of the intrinsic common character of nature.The character of super material and function mainly come from its inner structure but not constitute their material, therefore, are design and synthetic super material, and people have carried out a lot of research work.2000, people such as the Smith of Duke University pointed out that the composite structure of the metal wire of periodic arrangement and open loop syntonizer (SRR) can realize that DIELECTRIC CONSTANT and magnetic permeability μ simultaneously for negative two negative material, also claim LHM.They are again by making the two negative material that metal wire and SRR composite structure have been realized two dimension at printed circuit board (PCB) (PCB) afterwards.
The artificial microstructure of existing super material is generally metallic substance, and medium substrate generally adopts the organic resin substrate, the specific inductivity of organic resin baseplate material is generally between 3～5, and for some application of super material, often need than higher dielectric constant material as medium substrate, when satisfying various mechanical propertys, be difficult to search out suitable material.
If but use some high-ks, low-loss material, the product mechanical property of preparation is not only good, fine and close, even, also can be prepared into different shapes and satisfy industrial demand;
Medium ceramic material on the market comprises barium titanate and some oxide compounds, for example SrO, WO
3, PbO, B
2O
3Or rare earth etc., though the permittivity ratio of the substrate of this medium ceramic material preparation is higher, loss ratio is lower, does not reach super material to the requirement of high-k (for example greater than 40), simultaneously, the somewhat expensive for example rare earth of some oxide compound, also some oxide compound is poisonous, is not suitable for extensive use.
[summary of the invention]
First technical problem to be solved by this invention is: a kind of ceramic composite is provided, and substrate dielectric constant height, loss that this ceramic composite is made are low;
Second technical problem to be solved by this invention is: utilize substrate that this ceramic composite makes as the substrate of super material, thereby specific inductivity height, the loss of feasible super material are low.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of ceramic composite comprises 70%～76% principal crystalline phase, 20%～24% TiO by mass percentage
2With 2%～6% La
2O
3
Described principal crystalline phase is CaTiO
3
Described principal crystalline phase, TiO2 and La
2O
3Granularity all be 0.5～1 micron.
A kind of super material, comprise the microstructure that substrate and array are periodically arranged on substrate, described substrate is made by ceramic composite, and described ceramic composite comprises 70%～76% principal crystalline phase, 20%～24% TiO2 and 2%～6% La by mass percentage
2O
3
Described principal crystalline phase is CaTiO
3
Described principal crystalline phase, TiO2 and La
2O
3Granularity all be 0.5～1 micron.
Beneficial effect of the present invention is: super material substrate is made by ceramic composite, and this ceramic composite is by CaTiO
3Principal crystalline phase, TiO
2And La
2O
3Form, utilize the substrate dielectric constant of this ceramic composite preparation can reach about 45, the tangent angle of loss can be reduced to about 0.0001; And the substrate densification of preparing, even, satisfactory mechanical property can be widely used on the super material, as the substrate of super material.
[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.
A kind of super material comprises the microstructure that substrate and array are periodically arranged on substrate, described substrate is made by ceramic composite, and described ceramic composite comprises 70%～76% CaTiO by mass percentage
3Principal crystalline phase, 20%～24% TiO
2With 2%～6% La
2O
3, adopt CaTiO
3Can improve the specific inductivity of substrate as principal crystalline phase, add a little La
2O
3Can improve the quality factor of substrate, add a certain amount of TiO simultaneously again
2Can reduce sintering temperature; CaTiO
3, TiO
2And La
2O
3Granularity all be 0.5～1 micron.
The substrate that utilizes the ceramic composite of above-mentioned prescription to make, specific inductivity can reach about 45, and the tangent angle of loss can be reduced to 0.0001; And the substrate densification of preparing, even, satisfactory mechanical property can be widely used on the super material, as the substrate of super material.
Embodiment one:
A kind of ceramic composite comprises 70% CaTiO by mass percentage
3Principal crystalline phase, 24%TiO
2With 6% La
2O
3, utilize hot isostatic pressing technique under 1100 ℃ of temperature, pressure 200MPa condition with above-mentioned materials sintering 2 hours, prepare the substrate of required super material; The specific inductivity of the substrate that obtains after testing, is 44.5, the loss tangent angle is 0.00009; Also can adopt discharge plasma sintering technique to prepare above-mentioned super material substrate.
Embodiment two:
A kind of ceramic composite comprises 74% CaTiO by mass percentage
3Principal crystalline phase, 22%TiO
2With 4% La
2O
3, utilize hot isostatic pressing technique under 1200 ℃ of temperature, pressure 250MPa condition with above-mentioned materials sintering 2.5 hours, prepare the substrate of required super material; The specific inductivity of the substrate that obtains after testing, is 45, the loss tangent angle is 0.0001; Same, also can adopt discharge plasma sintering technique to prepare above-mentioned super material substrate.
Embodiment three:
A kind of ceramic composite comprises 76% CaTiO by mass percentage
3Principal crystalline phase, 22%TiO
2With 2% La
2O
3, utilize hot isostatic pressing technique under 1200 ℃ of temperature, pressure 250MPa condition with above-mentioned materials sintering 3 hours, prepare the substrate of required super material; The specific inductivity of the substrate that obtains after testing, is 46, the loss tangent angle is 0.00015; Also can adopt the discharge plasma sintering technique preparation.
Above-mentioned super material substrate in sum, utilizing prescription is 70%～76% CaTiO
3Principal crystalline phase, 20%～24% TiO
2With 2%～6% La
2O
3The super material substrate made of ceramic composite, the specific inductivity of its substrate can reach 45, the loss tangent angle is reduced to 0.0001 simultaneously.
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. a ceramic composite is characterized in that: comprise 70%～76% principal crystalline phase, 20%～24% TiO by mass percentage
2With 2%～6% La
2O
3
2. ceramic composite according to claim 1, it is characterized in that: described principal crystalline phase is CaTiO
3
3. ceramic composite according to claim 1 is characterized in that: described principal crystalline phase, TiO2 and La
2O
3Granularity all be 0.5～1 micron.
4. super material, comprise the microstructure that substrate and array are periodically arranged on substrate, it is characterized in that: described substrate is made by ceramic composite, and described ceramic composite comprises 70%～76% principal crystalline phase, 20%～24% TiO2 and 2%～6% La by mass percentage
2O
3
5. super material according to claim 4, it is characterized in that: described principal crystalline phase is CaTiO
3
6. super material according to claim 4 is characterized in that: described principal crystalline phase, TiO2 and La
2O
3Granularity all be 0.5～1 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100502672A CN103288440A (en) | 2012-02-29 | 2012-02-29 | Ceramic composite material and super material prepared from same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100502672A CN103288440A (en) | 2012-02-29 | 2012-02-29 | Ceramic composite material and super material prepared from same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103288440A true CN103288440A (en) | 2013-09-11 |
Family
ID=49090049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100502672A Pending CN103288440A (en) | 2012-02-29 | 2012-02-29 | Ceramic composite material and super material prepared from same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103288440A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0161219B1 (en) * | 1996-09-09 | 1998-11-16 | 손영목 | High frequency dielectric ceramic composition for ceramic condenser |
| CN1409334A (en) * | 2001-09-14 | 2003-04-09 | 松下电器产业株式会社 | Ceramic capacitor |
-
2012
- 2012-02-29 CN CN2012100502672A patent/CN103288440A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0161219B1 (en) * | 1996-09-09 | 1998-11-16 | 손영목 | High frequency dielectric ceramic composition for ceramic condenser |
| CN1409334A (en) * | 2001-09-14 | 2003-04-09 | 松下电器产业株式会社 | Ceramic capacitor |
Non-Patent Citations (1)
| Title |
|---|
| 杜波等: ""基于多层陶瓷结构的超材料的制备与性能"", 《四川大学学报（自然科学版）》, vol. 42, no. 2, 31 October 2005 (2005-10-31), pages 473 - 476 * |
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|---|---|---|---|
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130911 |
|
| RJ01 | Rejection of invention patent application after publication |