CN105218089A - The electrical condenser of a kind of barium titanate ceramic dielectric material and gained - Google Patents
The electrical condenser of a kind of barium titanate ceramic dielectric material and gained Download PDFInfo
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- CN105218089A CN105218089A CN201510670782.4A CN201510670782A CN105218089A CN 105218089 A CN105218089 A CN 105218089A CN 201510670782 A CN201510670782 A CN 201510670782A CN 105218089 A CN105218089 A CN 105218089A
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- barium titanate
- dielectric material
- ceramic dielectric
- titanate ceramic
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Abstract
The present invention relates to ceramic medium material and gained components and parts technical field, it specifically discloses the high-voltage sheet type multi-layer capacitor of a kind of barium titanate ceramic dielectric material and gained, barium titanate ceramic dielectric material, is prepared by following method steps: A, calcining: by the BaTiO of initial particle size D50=0.1 ~ 0.3um
3powder calcines 2-3 hour at 1100 ~ 1200 DEG C, the BaTiO after calcining
3powder granularity controls at D50=0.8 ~ 1.5um; B, doping: in powder in step, mix oxide compound, add oxide compound weight account for (4 ~ 8) % of steps A powder gross weight; C, by the powder of step B by wet ball grinding blending dispersion, dry.The multi-layer capacity obtained by barium titanate ceramic dielectric material, voltage rating, up to 10000V, is interior electrode by nickel electrode, realizes high-voltage product low cost lowpriced metallization, can be widely used in the consumer electronic product having low cost to require.
Description
Technical field
The present invention relates to barium titanate ceramic dielectric material, particularly relate to the chip multilayer ceramic capacitor of a kind of barium titanate ceramic dielectric material and gained.
Background technology
In materials application field, electron ceramic material has been widely used in multiple-layer sheet ceramic capacitor (MLCC), resistor, inducer, microwave device, ic substrate, opto-electronic device, LC, RC, L-C-R composite component, the various electronic devices and components of sensor.Disk Ceramic high-pressure electrical condenser volume is large, is not suitable for surface mount (SMT), can not meet module small light and produce the requirement of assembling high-efficiency automatic.With the high pressure multiple-layer sheet ceramic capacitor that silver palladium alloy is interior electrode fabrication, cost is high, only applies among a small circle in military domain at present.The current main flow of conventional base metal nickel electrode multilayer chip ceramic capacitor is the low voltage product of below 100V, is not suitable for the utilization of high-tension circuit.
Summary of the invention
The technical problem that the present invention solves there is provided the high-voltage sheet type multilayer ceramic dielectric capacitor of a kind of anti-reduction barium titanate ceramic dielectric material and gained.
For solving the problems of the technologies described above, technical scheme provided by the invention is: a kind of barium titanate ceramic dielectric material, is prepared by following method steps: A, calcining: by the BaTiO of initial particle size D50=0.1 ~ 0.3um
3powder calcines 2-3 hour at 1100 ~ 1200 DEG C, the BaTiO after calcining
3powder granularity controls at D50=0.8 ~ 1.5um; B, doping: in powder in step, mix oxide compound, add oxide compound weight account for (4 ~ 8) % of steps A powder gross weight; Described oxide compound is Y
2o
3-MnCO
3-CaCO
3the composition of-MgO; C, by the powder of step B by wet ball grinding blending dispersion, dry.
Further: in above-mentioned preparation method, preferably, in the composition of described oxide compound, Y
2o
3/ MnCO
3weight ratio is 5/1.
Present invention also offers the chip multilayer ceramic capacitor obtained by above-mentioned barium titanate ceramic dielectric material.It is starched electrode and medium layer, briquet drying, lamination, cutting, binder removal, sintering, chamfering, end-blocking, burning end operation in preparation, making medium diaphragm, alternately double exposure by porcelain and makes, the preparation of porcelain slurry adds dehydrated alcohol, toluene, dispersion agent, defoamer, fluidizer, tackiness agent, mixing and ball milling 10-20 hour in the barium titanate ceramic dielectric powder of preparation method's gained of the present invention.Described binder removal refers to green compact binder removal 15 ~ 35h at 250 ~ 350 DEG C in atmosphere.Described sintering refers to that temperature is at 1200 ~ 1350 DEG C, and the lower insulation of H2/N2 gas mixture protection 2 ~ 3 hours, obtains fine and close common burning body.Described interior electrode is nickel inner electrode, and described nickel inner electrode comprises the electric field shielding electrode of alternately double exposure and the interior electrode that suspends.The proof voltage that suspension electrode is higher under realizing same media thickness, when electric field shielding electrode ensure that element bears high impressed voltage, do not leak in internal electrostatic field.Other are starched preparation, making medium diaphragm, briquet drying, lamination as porcelain, cut into the operations such as raw embryo, chamfering, end-blocking, burning end operation, plating end electrode is all technology that those skilled in the art commonly use.
The technical problem that the present invention need solve is to provide that one meets X7R porcelain Jie characteristic, environment-friendly type, material scatter is high, moulding process good, sintered at ultra low temperature barium titanate ceramic dielectric material, and when making 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 defect few.
Compared with prior art, barium titanate ceramic dielectric material of the present invention homogeneous, even particle size distribution, dielectric material not leaded (Pb), cadmium (Cd), mercury (Hg), chromium (Cr+6) etc. are unfavorable for that the harmful element of environmental protection, material scatter are high, moulding process good.When making MLCC product with barium titanate ceramic dielectric material, realize voltage rating ceramic condenser a few of hotspots up to 10000V, alternative corresponding disk high voltage capacitor; Be interior electrode by nickel electrode, realize high-voltage product low cost lowpriced metallization, the consumer electronic product having low cost to require can be widely used in.
Accompanying drawing explanation
Fig. 1 is MLCC product major axis vertical part surface schematic diagram of the present invention,
Wherein electrode, 3 end electrodes, 4 medium layers in 1 electric field shielding electrode, 2 suspensions.
Embodiment
Purport of the present invention adopts barium phthalate base to be material system, add property-modifying additive, obtain a kind ofly meeting X7R porcelain Jie characteristic, environment-friendly type, material scatter is high, moulding process is good resistance to reduction barium titanate ceramic dielectric material, and when making MLCC product, realize voltage rating ceramic condenser a few of hotspots up to 10000V, alternative corresponding disk high voltage capacitor; Be interior electrode by nickel electrode, realize high-voltage product low cost lowpriced metallization, the consumer electronic product having low cost to require can be widely used in.Be described in further detail content of the present invention below in conjunction with embodiment, content mentioned in embodiment is not limitation of the invention, and material prescription is selected to suit measures to local conditions and on result without substantial impact.
Embodiment
A kind of barium titanate ceramic dielectric material, is prepared by following method steps: carry out calcination according to the method steps condition of table 1, then carries out the obtained anti-reduction barium titanate ceramic dielectric material of doping by the method steps condition of table 2; When these barium titanate ceramic dielectric materials being made MLCC product by conventional processing method again, firing temperature is pressed shown in table 2.The MLCC product obtained as shown in Figure 1, the electric field shielding electrode 1 that two ends are end electrodes, interior electrode comprises alternately double exposure and the interior electrode 2 that suspends form, be provided with medium layer again in-between the electrodes, it is good that this MLCC product has dielectric withstanding voltage, the feature that capacity stablizes, performance are good, high pressure MLCC product performance test parameter is as shown in table 2.The capacitor arrangement made as shown in Figure 1.
Wherein, described oxide compound is Y
2o
3-MnCO
3-CaCO
3the composition of-MgO, and Y
2o
3/ MnCO
3weight ratio is 5/1.
Table 1BaTiO3 thermal treatment and granularity correspondence
| Code name | Heat-treat condition | Granularity D50 |
| BT08 | 1100 DEG C 2 hours | 0.8um |
| BT10 | 1150 DEG C 2 hours | 1.0um |
| BT12 | 1200 DEG C 2 hours | 1.2um |
The main manufacturing conditions of table 2 high voltage capacitor and test result
Barium titanate ceramic dielectric material of the present invention is homogeneous, even particle size distribution, dielectric material not leaded (Pb), cadmium (Cd), mercury (Hg), chromium (Cr+6) etc. are unfavorable for that the harmful element of environmental protection, material scatter are high, moulding process good.When making MLCC product with barium titanate ceramic dielectric material, realize voltage rating ceramic condenser a few of hotspots up to 10000V, alternative corresponding disk high voltage capacitor; Be interior electrode by nickel electrode, realize high-voltage product low cost lowpriced metallization, the consumer electronic product having low cost to require can be widely used in.
Claims (6)
1. a barium titanate ceramic dielectric material, prepared by following method steps:
A, calcining: by the BaTiO of initial particle size D50=0.1 ~ 0.3um
3powder calcines 2-3 hour at 1100 ~ 1200 DEG C, the BaTiO after calcining
3powder granularity controls at D50=0.8 ~ 1.5um;
B, doping: in powder in step, mix oxide compound, add oxide compound weight account for (4 ~ 8) % of steps A powder gross weight; Described oxide compound is Y
2o
3-MnCO
3-CaCO
3the composition of-MgO;
C, by the powder of step B by wet ball grinding blending dispersion, dry.
2. barium titanate ceramic dielectric material according to claim 1, is characterized in that: in described oxide composition, Y
2o
3/ MnCO
3weight ratio is 5/1.
3. the chip multilayer ceramic capacitor by barium titanate ceramic dielectric material gained described in claim 1 or 2, starch electrode and medium layer, briquet drying, lamination, cutting, binder removal, sintering, chamfering, end-blocking, burning end operation in preparation, making medium diaphragm, alternately double exposure by porcelain to make, it is characterized in that: the preparation of described porcelain slurry adds dehydrated alcohol, toluene, dispersion agent, defoamer, fluidizer, tackiness agent, mixing and ball milling 10-20 hour in barium titanate ceramic dielectric powder.
4. chip multilayer ceramic capacitor according to claim 3, is characterized in that: described binder removal refers to green compact binder removal 15 ~ 35h at 250 ~ 350 DEG C in atmosphere.
5. chip multilayer ceramic capacitor according to claim 4, is characterized in that: described sintering refers at temperature 1200 ~ 1350 DEG C, and the lower insulation of H2/N2 gas mixture protection 2 ~ 3 hours, obtains fine and close common burning body.
6. chip multilayer ceramic capacitor according to claim 5, is characterized in that: described interior electrode is nickel inner electrode, and described nickel inner electrode comprises the electric field shielding electrode of alternately double exposure and the interior electrode that suspends.
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| CN201510670782.4A CN105218089A (en) | 2015-10-13 | 2015-10-13 | The electrical condenser of a kind of barium titanate ceramic dielectric material and gained |
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|---|---|---|---|
| CN201510670782.4A CN105218089A (en) | 2015-10-13 | 2015-10-13 | The electrical condenser of a kind of barium titanate ceramic dielectric material and gained |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316744A (en) * | 2017-07-13 | 2017-11-03 | 中国振华集团云科电子有限公司 | A kind of chip multilayer gold electrode chip capacitor and preparation method thereof |
| CN107382307A (en) * | 2017-07-14 | 2017-11-24 | 安徽拓吉泰新型陶瓷科技有限公司 | A kind of preparation method of modified barium carbonate ceramic medium material |
| CN108975907A (en) * | 2018-09-05 | 2018-12-11 | 天津大学 | The method for improving barium titanate dielectric material resistance to reduction is adulterated by transition-metal ions |
| CN109305813A (en) * | 2018-09-05 | 2019-02-05 | 天津大学 | A method of improving barium titanate dielectric material resistance to reduction under reducing atmosphere |
| CN116206898A (en) * | 2023-03-09 | 2023-06-02 | 成都宏科电子科技有限公司 | Manufacturing method of high-voltage piece type multilayer ceramic dielectric capacitor and capacitor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107316744A (en) * | 2017-07-13 | 2017-11-03 | 中国振华集团云科电子有限公司 | A kind of chip multilayer gold electrode chip capacitor and preparation method thereof |
| CN107382307A (en) * | 2017-07-14 | 2017-11-24 | 安徽拓吉泰新型陶瓷科技有限公司 | A kind of preparation method of modified barium carbonate ceramic medium material |
| CN108975907A (en) * | 2018-09-05 | 2018-12-11 | 天津大学 | The method for improving barium titanate dielectric material resistance to reduction is adulterated by transition-metal ions |
| CN109305813A (en) * | 2018-09-05 | 2019-02-05 | 天津大学 | A method of improving barium titanate dielectric material resistance to reduction under reducing atmosphere |
| CN116206898A (en) * | 2023-03-09 | 2023-06-02 | 成都宏科电子科技有限公司 | Manufacturing method of high-voltage piece type multilayer ceramic dielectric capacitor and capacitor |
| CN116206898B (en) * | 2023-03-09 | 2024-04-26 | 成都宏科电子科技有限公司 | Manufacturing method of high-voltage piece type multilayer ceramic dielectric capacitor and capacitor |
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Application publication date: 20160106 |