CN101348369A - Barium titanate ceramic dielectric material - Google Patents
Barium titanate ceramic dielectric material Download PDFInfo
- Publication number
- CN101348369A CN101348369A CN 200810198381 CN200810198381A CN101348369A CN 101348369 A CN101348369 A CN 101348369A CN 200810198381 CN200810198381 CN 200810198381 CN 200810198381 A CN200810198381 A CN 200810198381A CN 101348369 A CN101348369 A CN 101348369A
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- China
- Prior art keywords
- barium titanate
- ceramic dielectric
- dielectric material
- titanate ceramic
- property
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
Abstract
The invention discloses a barium titanate ceramic dielectric material, consisting of a main crystal phase, a modified additive and a glass flux. In percentage by mol, the main crystal phase BaTiO3 accounts for 80 to 95 percent; the modified additive accounts for 0.7 to 19.5 percent; and the glass flux accounts for 1.21 to 9.1 percent. The invention has the advantages that the barium titanate ceramic dielectric material accords with X7R ceramic dielectric characteristics, and is good in environmental protection property, high in material dispersity and good in molding process; when the material is used for manufacturing MLCC products, and sintering temperature is low; and the barium titanate ceramic dielectric material is uniform in particle size distribution, uniform and compact in grain growth and free from or few in product detects.
Description
Technical field
The present invention relates to barium titanate ceramic dielectric material, relate in particular to a kind of barium titanate ceramic dielectric material that can be used for the MLCC manufacturing with rich silver electrode coupling.
Background technology
In the material Application Areas, electron ceramic material has been widely used in the various electronic devices and components such as multiple-layer sheet ceramic capacitor (MLCC), resistor, inducer, microwave device, ic substrate, opto-electronic device, LC, RC, L-C-R composite component, transmitter.MLCC relies on advantages such as distinctive big specific volume, chip type, high reliability to become can adapt to one of element of electronic technology develop rapidly.The progress of MLCC production technology depends on the development of material system and corresponding Technology all the time.Though more domestic producers have the X7R environment-friendly type porcelain that very sophisticated employing silver-palladium (Ag/Pd) is made electrode size at present, but use sintering temperature all than higher, silver-palladium (Ag/Pd) electrode size that mates high palladium content, its MLCC production cost also improve relatively.Chinese patent CN1604246 discloses a kind of hydro-thermal synthesizing nanocrystalline BT/BZT powder that directly utilizes and has made ceramic capacitor dielectric material and preparation method thereof.This material comprises principal crystalline phase zirconium barium titanate Ba (Ti
1-xZr
x) O
3With the altered contents metal, the principal crystalline phase powder grain size is 25～40nm, and the principal crystalline phase mole number is 96～98.5%; The altered contents metallic element contains at least four kinds in Li, Ca, Mg, Sr, Sc, Nb, Ta, Mn, Co, Ni, Zn, Si, Sb, Y, Bi and the lanthanon.The preparation method comprises that the principal crystalline phase powder is dispersed into slip, altered contents coats the surface deposition of principal crystalline phase powder; Steps such as washing, liquid-solid separation.Chinese patent CN1837145 relates to a kind of low sintering temperature-stable multilayer ceramic capacitor dielectric materials, and described dielectric material is made up of barium titanate major ingredient and secondary additive, comprises Nb
2O
5, Co
3O
4, or their soluble solids, ZnO, B
2O
3, or their compound, rare earth element and yttrium in one or more oxide compound.Sintering in 880 ℃ to 950 ℃ scopes, grain-size is 100～600nm, room temperature dielectric constant 1000～2500, temperature coefficient of capacitance≤± 15%, the room temperature dielectric loss is less than 2%, and insulation resistivity is greater than 10
11Ω cm.When these materials were made the MLCC medium layer, size-grade distribution was inhomogeneous, grain growing is inhomogeneous, not fine and close, directly influence the performance of electrical condenser.
Summary of the invention
The technical problem that the present invention need solve provides a kind of X7R of meeting porcelain Jie characteristic, environment-friendly type, dispersion of materials height, good, the sintered at ultra low temperature barium titanate ceramic dielectric material of moulding process, and when making the MLCC product with this material, sintering temperature is low, this barium titanate ceramic dielectric material even particle size distribution, grain growing evenly, fine and close, product zero defect or defective be few.
The technical problem to be solved in the present invention is achieved through the following technical solutions: a kind of barium titanate ceramic dielectric material, form by principal crystalline phase, property-modifying additive, glass fusing assistant, and count by molar principal crystalline phase BaTiO
380～95mol%, property-modifying additive 0.7～19.5mol%, glass fusing assistant 1.2～9.1mol%.
Further: in above-mentioned barium titanate ceramic dielectric material, described property-modifying additive is MgO, MnO, CaO, Er
2O
3, Sm
2O
3, Nb
2O
5, among the CoO one or more; Described glass fusing assistant is SiO
2, B
2O
3, ZnO, Li
2O, Bi
2O
3In one or more.Count by molar, it is MgO 0～3.0mol%, MnO 0.1～0.5mol%, CaO 0～5.0mol%, Er that described property-modifying additive is formed
2O
30～1.0mol%, Sm
2O
30.6～3.0mol%, Nb
2O
50～5.0mol%, CoO 0～2.0mol%.Count by molar, it is SiO that described glass fusing assistant is formed
20.1～2.0mol%, B
2O
30.3～3.0mol%, ZnO 0.8～3.0mol%, Li
2O 0～1.0mol%, Bi
2O
30～0.1mol%.When described barium titanate ceramic dielectric material was used to make the MLCC product, sintering temperature was 1000 ℃ ± 50 ℃.Make this MLCC porcelain to be complementary with rich silver electrode paste, the barium titanate ceramic dielectric material electric property satisfies the requirement of X7R porcelain simultaneously.And unleaded in the glass (Pb), arsenic (As), cadmium harmful elements such as (Cd), can with electrode matching co-firing in silver (Ag)-palladium (Pd) alloy of full silver (Ag) or low palladium content, and the production cost of MLCC is reduced greatly, can obtain appreciable economic benefit and improve the MLCC competitiveness of product in market.
Among the present invention barium titanate ceramic dielectric material compared with prior art, production process is basic identical, for disposable mix grinding slip, has the technology characteristic of simple.Barium titanate ceramic dielectric material homogeneous, even particle size distribution, dielectric material not leaded (Pb), cadmium (Cd), mercury (Hg), chromium (Cr
+ 6) wait the harmful element, dispersion of materials height, the moulding process that are unfavorable for environmental protection good.When making the MLCC product with barium titanate ceramic dielectric material, the porcelain body sintering temperature is low, and the grain growing of sintering porcelain body is even, fine and close, inclusion-free.
Embodiment
Purport of the present invention is that the employing barium phthalate base is a material system, add property-modifying additive, add the glass fusing assistant and help to reduce sintering temperature, adopt conventional technology to make required powder, obtain a kind of X7R of meeting porcelain Jie characteristic, environment-friendly type, dispersion of materials height, sintered at ultra low temperature barium titanate ceramic dielectric material that moulding process is good, and when making the MLCC product, sintering temperature is low, this barium titanate ceramic dielectric material even particle size distribution, grain growing evenly, fine and close, product zero defect or defective be few.Below in conjunction with embodiment content of the present invention is described in further detail, mentioned content is not a limitation of the invention among the embodiment, and material prescription is selected to suit measures to local conditions and the result is not had substantial influence.
At first, the general planning of summary material prescription of the present invention: a kind of barium titanate ceramic dielectric material, form by principal crystalline phase, property-modifying additive, glass fusing assistant, count by molar principal crystalline phase BaTiO
380～95mol%, property-modifying additive 0.7～19.5mol%, glass fusing assistant 1.2～9.1mol%.
Embodiment
A kind of barium titanate ceramic dielectric material makes barium titanate ceramic dielectric material with 1～No. 10 material prescription of table 1 with conventional technology.When with conventional processing method these barium titanate ceramic dielectric materials being made the MLCC product again, sintering temperature is 1000 ℃ ± 50 ℃.The MLCC product that obtains has the characteristics that capacity is stable, performance is good, the MLCC test parameter of 1～No. 10 material prescription correspondence of MLCC product performance test parameter such as table 2.
Table 1: principal crystalline phase, property-modifying additive, glass fusing assistant prescription are formed
Table 2: according to the MLCC particular product performance parameters that makes of ceramic medium material of 1～No. 10 prescription
| Material | DIELECTRIC CONSTANT | Dielectric loss tg δ (* 10 -4) | Insulation resistance (Ω) | Rate of change of capacitance (55 ℃-125 ℃) Δ C/C (%) |
| 1 | 2005 | 32-38 | ＞10 10 | -7.0/-6.2 |
| 2 | 2050 | 35-39 | ＞5*10 10 | --6.3/-5.3 |
| 3 | 2080 | 42-48 | ＞10 10 | -8.6/-6.6 |
| 4 | 2150 | 42-45 | ＞5*10 10 | -7.2/-7.6 |
| 5 | 2240 | 43-45 | ＞5*10 10 | -6.5/-5.9 |
| 6 | 2210 | 42-47 | ＞10 10 | -7.8/-6.8 |
| 7 | 2265 | 40-43 | ＞5*10 10 | -8.0/-7.0 |
| 8 | 2306 | 42-44 | ＞5*10 10 | -7.8/-6.1 |
| 9 | 2380 | 45-49 | ＞5*10 10 | -7.5/-7.1 |
| 10 | 2340 | 44-46 | ＞5*10 10 | -8.4/-6.8 |
Claims (5)
1, a kind of barium titanate ceramic dielectric material is made up of principal crystalline phase, property-modifying additive, glass fusing assistant, it is characterized in that: count by molar principal crystalline phase BaTiO
380～95mol%, property-modifying additive 0.7～19.5mol%, glass fusing assistant 1.2～9.1mol%.
2, barium titanate ceramic dielectric material according to claim 1 is characterized in that: described property-modifying additive is MgO, MnO, CaO, Er
2O
3, Sm
2O
3, Nb
2O
5, among the CoO one or more; Described glass fusing assistant is SiO
2, B
2O
3, ZnO, Li
2O, Bi
2O
3In one or more.
3, barium titanate ceramic dielectric material according to claim 2 is characterized in that: count by molar, it is MgO 0～3.0mol%, MnO 0.1～0.5mol%, CaO 0～5.0mol%, Er that described property-modifying additive is formed
2O
30～1.0mol%, Sm
2O
30.6～3.0mol%, Nb
2O
50～5.0mol%, CoO 0～2.0mol%.
4, barium titanate ceramic dielectric material according to claim 3 is characterized in that: count by molar, it is SiO that described glass fusing assistant is formed
20.1～2.0mol%, B
2O
30.3～3.0mol%, ZnO0.8～3.0mol%, Li
2O 0～1.0mol%, Bi
2O
30～0.1mol%.
5, according to selecting a described barium titanate ceramic dielectric material in the claim 1～4, it is characterized in that: when described barium titanate ceramic dielectric material was used to make the MLCC product, sintering temperature was 1000 ℃ ± 50 ℃.
Priority Applications (1)
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|---|---|---|---|
| CN 200810198381 CN101348369A (en) | 2008-09-06 | 2008-09-06 | Barium titanate ceramic dielectric material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810198381 CN101348369A (en) | 2008-09-06 | 2008-09-06 | Barium titanate ceramic dielectric material |
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|---|---|
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Family
ID=40267366
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| CN 200810198381 Pending CN101348369A (en) | 2008-09-06 | 2008-09-06 | Barium titanate ceramic dielectric material |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823877A (en) * | 2010-05-28 | 2010-09-08 | 天津大学 | Low-temperature co-fired ceramic medium material and preparation method thereof |
| CN102010198A (en) * | 2010-11-10 | 2011-04-13 | 厦门松元电子有限公司 | Ceramic capacitor dielectric material |
| CN102115323A (en) * | 2010-12-24 | 2011-07-06 | 费金华 | Doped modified barium titanate-based ceramic capacitor material |
| CN102199036A (en) * | 2011-02-25 | 2011-09-28 | 武汉理工大学 | Method for preparing energy storage ceramic with high breakdown strength |
| CN102557672A (en) * | 2012-01-05 | 2012-07-11 | 江苏大学 | Additive and application thereof to reduce sintering temperature of barium-strontium titanate capacitor ceramic |
| CN104692808A (en) * | 2015-02-06 | 2015-06-10 | 佛山市三水新华雄陶瓷有限公司 | Additive and method for lowering ceramic firing temperature |
| CN106242562A (en) * | 2016-01-19 | 2016-12-21 | 浙江九康电气有限公司 | A kind of preparation method of modified barium carbonate pottery |
| CN106927821A (en) * | 2017-04-12 | 2017-07-07 | 湖南云平环保科技有限公司 | High-dielectric-constant ceramics capacitor material and its manufacture method |
| CN108558399A (en) * | 2018-06-01 | 2018-09-21 | 西北大学 | A kind of low-temperature sintering high dielectric property Y5V type ceramic capacitor dielectric materials and preparation method thereof |
| CN110818407A (en) * | 2019-11-05 | 2020-02-21 | 广东风华高新科技股份有限公司 | X7R characteristic MLCC dielectric material and preparation method thereof |
| CN110922184A (en) * | 2019-12-18 | 2020-03-27 | 广东国华新材料科技股份有限公司 | Composite microwave dielectric ceramic and preparation method thereof |
| CN112723876A (en) * | 2020-12-18 | 2021-04-30 | 中国振华集团云科电子有限公司 | Ceramic dielectric ceramic powder and preparation method and application thereof |
| CN113336541A (en) * | 2021-07-20 | 2021-09-03 | 山东国瓷功能材料股份有限公司 | Low-temperature co-fired glass ceramic material for duplex device and preparation method thereof |
| CN115159977A (en) * | 2022-06-22 | 2022-10-11 | 苏州博恩希普新材料科技有限公司 | Wide-temperature-range low-loss dielectric ceramic material and preparation method thereof |
-
2008
- 2008-09-06 CN CN 200810198381 patent/CN101348369A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823877B (en) * | 2010-05-28 | 2012-07-04 | 天津大学 | Low-temperature co-fired ceramic medium material and preparation method thereof |
| CN101823877A (en) * | 2010-05-28 | 2010-09-08 | 天津大学 | Low-temperature co-fired ceramic medium material and preparation method thereof |
| CN102010198A (en) * | 2010-11-10 | 2011-04-13 | 厦门松元电子有限公司 | Ceramic capacitor dielectric material |
| CN102115323A (en) * | 2010-12-24 | 2011-07-06 | 费金华 | Doped modified barium titanate-based ceramic capacitor material |
| CN102199036A (en) * | 2011-02-25 | 2011-09-28 | 武汉理工大学 | Method for preparing energy storage ceramic with high breakdown strength |
| CN102557672A (en) * | 2012-01-05 | 2012-07-11 | 江苏大学 | Additive and application thereof to reduce sintering temperature of barium-strontium titanate capacitor ceramic |
| CN102557672B (en) * | 2012-01-05 | 2014-05-28 | 江苏大学 | Additive and application thereof to reduce sintering temperature of barium-strontium titanate capacitor ceramic |
| CN104692808A (en) * | 2015-02-06 | 2015-06-10 | 佛山市三水新华雄陶瓷有限公司 | Additive and method for lowering ceramic firing temperature |
| CN106242562B (en) * | 2016-01-19 | 2018-10-26 | 浙江九康电气有限公司 | A kind of preparation method of modified barium carbonate ceramics |
| CN106242562A (en) * | 2016-01-19 | 2016-12-21 | 浙江九康电气有限公司 | A kind of preparation method of modified barium carbonate pottery |
| CN106927821A (en) * | 2017-04-12 | 2017-07-07 | 湖南云平环保科技有限公司 | High-dielectric-constant ceramics capacitor material and its manufacture method |
| CN108558399A (en) * | 2018-06-01 | 2018-09-21 | 西北大学 | A kind of low-temperature sintering high dielectric property Y5V type ceramic capacitor dielectric materials and preparation method thereof |
| CN110818407A (en) * | 2019-11-05 | 2020-02-21 | 广东风华高新科技股份有限公司 | X7R characteristic MLCC dielectric material and preparation method thereof |
| CN110818407B (en) * | 2019-11-05 | 2022-03-04 | 广东风华高新科技股份有限公司 | X7R characteristic MLCC dielectric material and preparation method thereof |
| CN110922184A (en) * | 2019-12-18 | 2020-03-27 | 广东国华新材料科技股份有限公司 | Composite microwave dielectric ceramic and preparation method thereof |
| CN110922184B (en) * | 2019-12-18 | 2022-07-12 | 广东国华新材料科技股份有限公司 | Composite microwave dielectric ceramic and preparation method thereof |
| CN112723876A (en) * | 2020-12-18 | 2021-04-30 | 中国振华集团云科电子有限公司 | Ceramic dielectric ceramic powder and preparation method and application thereof |
| CN113336541A (en) * | 2021-07-20 | 2021-09-03 | 山东国瓷功能材料股份有限公司 | Low-temperature co-fired glass ceramic material for duplex device and preparation method thereof |
| CN113336541B (en) * | 2021-07-20 | 2022-08-02 | 山东国瓷功能材料股份有限公司 | Low-temperature co-fired glass ceramic material for duplex device and preparation method thereof |
| CN115159977A (en) * | 2022-06-22 | 2022-10-11 | 苏州博恩希普新材料科技有限公司 | Wide-temperature-range low-loss dielectric ceramic material and preparation method thereof |
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Application publication date: 20090121 |