CN100372802C - High frequency thermostable titanium barium neodymium base ceramic medium materials and multilayer sheet type ceramic capacitor - Google Patents

High frequency thermostable titanium barium neodymium base ceramic medium materials and multilayer sheet type ceramic capacitor Download PDF

Info

Publication number
CN100372802C
CN100372802C CNB2003101176436A CN200310117643A CN100372802C CN 100372802 C CN100372802 C CN 100372802C CN B2003101176436 A CNB2003101176436 A CN B2003101176436A CN 200310117643 A CN200310117643 A CN 200310117643A CN 100372802 C CN100372802 C CN 100372802C
Authority
CN
China
Prior art keywords
ceramic
medium material
tio
ceramic medium
band
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2003101176436A
Other languages
Chinese (zh)
Other versions
CN1634799A (en
Inventor
张火光
韩建宏
付振晓
王作华
魏汉光
李文君
周志珍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Fenghua Advanced Tech Holding Co Ltd
Original Assignee
Guangdong Fenghua Advanced Tech Holding Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Fenghua Advanced Tech Holding Co Ltd filed Critical Guangdong Fenghua Advanced Tech Holding Co Ltd
Priority to CNB2003101176436A priority Critical patent/CN100372802C/en
Publication of CN1634799A publication Critical patent/CN1634799A/en
Application granted granted Critical
Publication of CN100372802C publication Critical patent/CN100372802C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The present invention discloses a high frequency thermostable BaO-Nd2O3-TiO2 system lead-free environment protection type ceramic dielectric material and a multilayer chip ceramic capacitor which is made of the ceramic dielectric material. The environment protection type ceramic dielectric material of the present invention does not contain hazardous elements, such as lead, arsenic, cadmium, mercury, chromium, etc. The present invention comprises a main crystalline phase BaNd2 Ti<4+x> O<12+2x> (0<=X<=1.5), a secondary component Nd2Ti2O7, ZnO, B2O3, SiO2 and Li2O, and one or a compound of more than one of Bi2O3, TiO2, ZrO2 and CaO. The dielectric constant of the ceramic capacitor which is made of the ceramic material of the present invention is between 50 and 60, the performance of the capacitor conforms to an EIA standard, and the temperature coefficient of the dielectric constant meets C0G characteristics.

Description

The titanium barium neodymium base ceramic medium material and the multiple-layer sheet ceramic capacitor of high frequency heat stable
Technical field
The present invention relates to a kind of titanium barium neodymium base ceramic medium material and multiple-layer sheet ceramic capacitor (MLCC) of high frequency heat stable, specifically, the present invention relates to the environment-friendly type titanium barium neodymium base ceramic medium material and the multiple-layer sheet ceramic capacitor of a kind of not leaded (Pb), arsenic (As), cadmium (Cd), mercury (Hg), chromium harmful elements such as (Cr).
Background technology
Along with developing rapidly of modern electronic technology, electronic component constantly develops to the direction of miniaturization, high reliability.In the prior art, the electronic ceramic dielectric material that high band uses, aspect thermostability, exist not enough, and, the electronic ceramic dielectric material of specific inductivity between 50～60 all contains lead (Pb), arsenic (As), cadmium harmful elements such as (Cd) usually, causes environment and human beings'health are caused certain harm.
The open flat 11-240752 of JP of Japan's special permission discloses a kind of with xBaOyNd 2O 3ZTiO 2UPbOvBi 2O 3As the dielectric ceramic composition of principal constituent, wherein, 0.086＜x＜0.178,0.092＜y＜0.168,0.641＜z＜0.726,0.021＜u＜0.082,0.003＜v＜0.05, x+y+z+u+v=1.But contain harmful Pb element in the principal constituent of this dielectric ceramic composition.
Someone once attempted preparing the electronic ceramic dielectric material of a kind of not leaded (Pb), arsenic (As), cadmium (Cd), and for example, the open flat 06-239661 of JP of Japan's special permission discloses a kind of high frequency dielectric ceramic composition composed as follows: its principal constituent is xBaOyNd 2O 3ZTiO 2VBi 2O 3, wherein, 0.130＜x＜0.160,0.110＜y＜0.140,0.600＜z＜0.650,0.090＜v＜0.140, and x+y+z+v=1; Its ancillary component is CuO, ZnO, B 2O 3, GeO 2, SiO 2But the ceramic product relative permittivity that this dielectric ceramic composition is made is greater than 100.
Chinese patent application CN03120586.0 discloses a kind of by xRe 2O 3-yBaO-zTiO 2The dielectric ceramic composition of expression, wherein, Re is at least a rare earth element that is selected among Nd, La, Pr, the Sm, x+y+z=100, and the general formula with respect to 100wt% is formed, and is added with the following SiO of Nb2O5 (not containing 0wt%), 3wt% of not enough 0.3wt% respectively 2The MnO (not containing 0wt%) that (not containing 0wt%), 3wt% are following.This dielectric ceramic composition is reducing the poor short circuit rate, improve the material use efficiency aspect and done some improvement, but dielectric properties is still not ideal.
Therefore, be necessary to develop a kind of environment-friendly type radio ceramics dielectric material, and use it for the manufacturing of multilayer chip capacitor, with performance and the quality of improving multilayer chip capacitor with good frequency response characteristic and dielectric properties.
Summary of the invention
The purpose of this invention is to provide a kind of high frequency heat stable BaO-Nd 2O 3-TiO 2Be ceramic medium material, the ep-type material of this ceramic medium material not leaded (Pb), arsenic (As), cadmium (Cd), mercury (Hg), chromium harmful elements such as (Cr).
Another object of the present invention provides a kind of multiple-layer sheet ceramic capacitor, and the specific inductivity of this electrical condenser is between 50～60.
At high frequency heat stable BaO-Nd of the present invention 2O 3-TiO 2Be in the ceramic medium material, in molar percentage, it comprises following composition:
Principal crystalline phase is BaNd 2Ti 4+xO 12+2x, its content is between 45～65%, and wherein, 0≤X≤1.5 are preferably 0≤X≤1.0;
Ancillary component is 26～42% Nd 2Ti 2O 7, 7～13% ZnO, 4.0～8.0% B 2O 3, 3.0～9.0% SiO 2And 0.5～2% Li 2O.
In the ceramic medium material of the present invention, adopted BaNd 2Ti 4+xO 12+2x(0≤X≤1.5) are main crystalline phase.On the one hand, BaNd 2Ti 4+xO 12+2x(0≤X≤1.5) based material has higher dielectric constant and moderate Q value; On the other hand, BaNd 2Ti 4+xO 12+2x(0≤X≤1.5) based material technology stability is better, is fit to carry out mass production, is easy to control.Therefore, with BaNd 2Ti 4+xO 12+2xThe ceramic medium material that make for principal constituent (0≤X≤1.5), its MLCC has higher reliability and thermostability, and dielectric properties are good.
In the above-mentioned ceramic medium material, the Nd of one of main added ingredients (ancillary component) 2Ti 2O 7Can improve the temperature coefficient of permittivity of porcelain effectively, can guarantee that capacitor volume satisfies the COG characteristic of EIA standard for variation of temperature, and can improve the frequency response characteristic of porcelain, make ceramic medium material of the present invention than single BaNd 2Ti 4+xO 12+2x(0≤X≤1) is that ceramic medium material has more superior dielectric properties.
And auxiliary composition ZnO can promote the sintering of each mixture of dielectric material effectively.During sintering and B 2O 3, SiO 2, Li 2O can promote the sintering of porcelain body effectively in conjunction with forming the glass fusing assistant, makes grain growing even, makes medium layer finer and close.Control ZnO, B 2O 3, SiO 2, Li 2Each component concentration of O can more effectively improve the dielectric characteristics and the insulation resistance of MLCC porcelain body.If ZnO, B 2O 3, SiO 2, Li 2O content in porcelain is too high, can make the ceramic capacitor dielectric loss of manufacturing bigger than normal, and porcelain body intensity reduces, and specific inductivity descends; If ZnO, B 2O 3, SiO 2, Li 2O content is low excessively, and then the electrical condenser sintering becomes difficult.
Preferably, at high frequency heat stable BaO-Nd of the present invention 2O 3-TiO 2Be in the ceramic medium material, in molar percentage, also comprise 0.3～4.0%, be selected from Bi 2O 3, TiO 2, ZrO 2With one or more the compound among the CaO.
Add Bi 2O 3, TiO 2, ZrO 2With one or more compounds among the CaO as ancillary component, help the further raising of dielectric material dielectric properties and stable, and improve temperature coefficient of permittivity, can satisfy the COG characteristic; These several ancillary components can be to add separately or the combination interpolation.
In the present invention, principal crystalline phase BaNd 2Ti 4+xO 12+2xCan be by BaCO 3, Nd 2O 3And TiO 2In proportion ball milling mix, under 1100～1200 ℃ of temperature, calcine and made preferred 2～3 hours in tens of minutes to tens of hours.
In the present invention, Nd 2Ti 2O 7Can be by Nd 2O 3And TiO 2By 1: 2 mol ratio, ball milling mixed, and this mixture for several of precalcining made in ten minutes to tens of hours under 1050～1150 ℃ of temperature, preferred 2～3 hours.
The mean particle size size of ceramic medium material of the present invention generally is controlled between 0.7～1.7 micron, is preferably 0.9～1.5 micron.
Above-mentioned various starting material, certain that can the calcining starting material powder is several; Or two or more in these powders are mixed by predetermined proportion, and mixture is carried out precalcining handle, synthetic main piece and the secondary material of burning.Can make each powder in ceramic dielectic, distribute more evenly after the precalcining and crystal phase structure more stable.Thereby, and compare by the electrical condenser of these powder manufacturings of simple mixing, greatly reduced the deviation of electrical condenser dielectric properties.The precalcining temperature can be carried out 1100～1200 ℃ temperature.Calcining temperature can not be too low, otherwise the calcining effect is insufficient, required crystal phase structure instability; Calcining temperature is too high, and then powder active reduces, and is unfavorable for sintering.Then with precalcining or not the incinerating powder mix by predetermined proportion, can obtain ceramic medium material of the present invention by technological processs such as ball milling refinement, dryings.
On the other hand, the present invention also provides a kind of multiple-layer sheet ceramic capacitor, and this ceramic condenser comprises ceramic dielectric layer, interior electrode and end electrode, and this ceramic dielectric layer is by the BaO-Nd with following mole percentage composition content 2O 3-TiO 2Be that ceramic medium material makes:
Principal crystalline phase is BaNd 2Ti 4+xO 12+2x, its content is between 45～65%, and wherein, 0≤X≤1.5 are preferably 0≤X≤1.0;
Ancillary component is 26～42% Nd 2Ti 2O 7, 7～13% ZnO, 4.0～8.0% B 2O 3, 3.0～9.0% SiO 2And 0.5～2% Li 2O.
Preferably, the BaO-Nd for preparing above-mentioned ceramic dielectric layer 2O 3-TiO 2Be ceramic medium material also comprise 0.3～4.0%, be selected from Bi 2O 3, TiO 2, ZrO 2With one or more the compound among the CaO.
In above-mentioned ceramic condenser, interior electrode is Ag/Pd, and its ratio is 65～75/35～25, and end electrode is by silver (Ag) or the manufacturing of silver (Ag) alloy.
Adopt the BaO-Nd of above-mentioned high frequency heat stable 2O 3-TiO 2Be the ceramic condenser of the present invention of ceramic medium material preparation, its specific inductivity is 50～60.
Ceramic medium material of the present invention not leaded (Pb), arsenic (As), cadmium (Cd), mercury (Hg), chromium harmful elements such as (Cr), meet modern environmental protection requirement, its specific inductivity of prepared electrical condenser is between 50～60, have superior dielectric properties, satisfied the needs of the radio ceramics electrical condenser production of conventional containment.
Specifically describe the present invention below in conjunction with embodiment, but the present invention is not limited to these concrete embodiments; Any change or improvement of being done on basis of the present invention all belongs to protection scope of the present invention.
Embodiment
Embodiment 1
With purity is powder starting material more than 99.5%, with 1 mole of BaCO 3, 1 mole of Nd 2O 3With 4 moles of TiO 2Blending ratio, ball milling mixes, and under 1150 ℃ of temperature, calcines this powder mix 2.5 hours, promptly gets BaNd 2Ti 4O 12(x=0) main crystal phase material.
With purity is starting material more than 99.5%, with 1 mole of Nd 2O 3With 2 moles of TiO 2Ratio, ball milling mixes, and in this mixture of 1050～1150 ℃ of temperature precalcinings 2.5 hours, promptly gets metatitanic acid neodymium Nd 2Ti 2O 7
Add less important starting material as shown in table 1 by predetermined proportion in main raw then, all then, add organic binder bond and ethanol equal solvent very much by mole per-cent, thereby form slurry.
Table 1
Title material BaNd 2Ti 4O 12 Nd 2Ti 2O 7 The content of each ancillary component
ZnO B 2O 3 SiO 2 Li 2O CaO ZrO 2 Bi 2O 3 TiO 2
1 50 31.0 9.5 5.3 6.0 0.2 0.3 0.6 0.1 0.15
2 52 32.0 9.5 5.9 6.0 0.2 0.3 0.6 0.1 0.15
3 54 33.5 9.5 6.3 6.0 0.2 0.3 0.6 0.1 0.15
4 56 35.0 9.5 6.8 6.0 0.2 0.3 0.6 0.1 0.15
5 58 37.0 9.5 7.2 6.0 0.2 0.3 0.6 0.1 0.15
6 60 39.0 9.5 7.9 6.0 0.2 0.3 0.6 0.1 0.15
7 52 32.0 9.5 6.6 6.0 0.1 0.3 0.6 0.1 0.15
8 52 32.0 9.5 6.6 6.0 0.1 0.3 0.6 0.1 0.2
9 52 32.0 9.5 6.6 6.0 0.2 0.3 0.6 0.1 -
10 52 32.0 9.5 6.6 6.0 0.2 0.4 0.8 - -
11 52 32.0 9.5 6.6 6.0 0.2 0.4 0.8 0.05 0.07
12 52 32.0 9.5 6.6 6.0 0.2 - - 0.9 1.2
The slurry curtain coating is made into the diaphragm of 25 micron thickness, electrode in printed silver on diaphragm (Ag)-palladium (Pd) alloy, the alternately laminated required number of plies forms the green compact capacitor chip, then at 350 ℃ of heat-treated green compact capacitor chips, to get rid of organic binder bond and solvent, at 1050 ℃ of temperature sintering capacitor chips, then, handle through surface finish, seal up pair of outer silver (Ag) or alloy silver electrode again at the two ends of sheet, outer electrode is connected with internal electrode.Thermal treatment outer electrode in 800 ℃ of temperature ranges; Through electroplating processes, can obtain multiple-layer sheet ceramic capacitor again.
At room temperature, utilize the HP4278A electric bridge, at 1MHz, 1.0V (AC) is test capacitors capacity and dielectric loss down; Utilize the quick Insulation Resistance Tester of SF2512, apply 100V (DC) voltage rating 10 seconds, the test insulation resistance; Utilize high-low temperature chamber, between-55～+ 125 ℃, the test temperature coefficient of permittivity.Test result is shown in the following table 2.
Table 2
Title material Specific inductivity Loss tangent (* 10 -4) Temperature factor (PPM/ ℃) Insulation resistance (Ω)
1 56 3 15 ≥10 11
2 58 4 13 ≥10 11
3 56 4 11 ≥10 11
4 55 5 10 ≥10 11
5 58 4 11 ≥10 11
6 57 4 9 ≥10 11
7 59 3 16 ≥10 11
8 57 3 13 ≥10 11
9 55 5 9 ≥10 11
10 54 4 5 ≥10 11
11 57 5 11 ≥10 11
12 58 5 8 ≥10 11
From table 2, can see, not only satisfy the COG characteristic of EIA standard, and show high insulation resistance and superior dielectric properties according to multiple-layer sheet ceramic capacitor of the present invention.Be in particular in: insulating resistance value 〉=10 11Ω, specific inductivity is about 55～59, loss tangent≤5 * 10 -4Between-55～+ 125 ℃, temperature coefficient of permittivity Tcc is 0 ± 30ppm/ ℃.
Embodiment 2
With purity is starting material more than 99.5%, with 1 mole of BaCO 3, 1 mole of Nd2O3,4.5 moles of TiO 2Blending ratio, ball milling mixes, and under 1100 ℃ of temperature, calcines this powder mix 2.5 hours, promptly gets BaNd 2Ti 4.5O 13(x=0.5) main crystal phase material.
With purity is starting material more than 99.5%, with 1 mole of Nd 2O 3With 2 moles of TiO 2Ratio, ball milling mixes, and in this mixture of 1050 ℃ of temperature precalcinings 2.5 hours, promptly gets metatitanic acid neodymium Nd 2Ti 2O 7
Add submember by predetermined proportion in principal constituent then, as shown in table 3, all are very much by mole per-cent.By in the method Computer-Assisted Design, Manufacture And Test multiple-layer sheet ceramic capacitor test result such as table 4 of example 1.
Table 3
The invention material BaNd 2Ti 4.5O 13 Nd 2Ti 2O 7 The content of each ancillary component
ZnO B 2O 3 SiO 2 Li 2O CaO ZrO 2 Bi 2O 3 TiO 2
13 52 34 9.5 6.6 6.0 0.2 0.3 0.2 0.15
14 52 34 9.5 6.6 6.0 0.2 0.3 0.6 0.3 0.15
15 52 34 9.5 6.6 6.0 0.2 0.3 0.75 0.3 0.15
16 52 34 9.5 6.6 6.0 0.2 0.3 0.6 0.5 0.1
17 52 34 9.5 6.6 6.0 0.2 0.3 0.5 0.5 0.1
18 52 34 9.5 6.6 6.0 0.2 - - 1.1 1.25
Table 4
Title material Specific inductivity Loss tangent (* 10 -4) Temperature factor (PPM/ ℃) Insulation resistance (Ω)
13 54 4 -19 ≥10 11
14 56 4 -14 ≥10 11
15 53 3 -17 ≥10 11
16 55 4 -13 ≥10 11
17 55 4 -12 ≥10 11
18 58 5 -13 ≥10 11
From table 4, can see, not only satisfy the COG characteristic of EIA standard, and show high insulation resistance and loss tangent preferably according to multiple-layer sheet ceramic capacitor of the present invention.Be in particular in: insulating resistance value 〉=10 11Ω, specific inductivity is about 53～58, loss tangent≤5 * 10 -4Between-55～+ 125 ℃, temperature coefficient of permittivity Tcc is 0 ± 30ppm/ ℃.
Embodiment 3
With purity is starting material more than 99.5%, with 1 mole of BaCO 3, 1 mole of Nd 2O 3, 5 moles of TiO 2Ratio, ball milling mixes, and in this mixture of 1200 ℃ of temperature precalcinings 2.5 hours, promptly gets BaNd 2Ti 5O 12(x=1.0) main crystal phase material.
With purity is starting material more than 99.5%, with 1 mole of Nd 2O 3With 2 moles of TiO 2Ratio, ball milling mixes, and in this mixture of 1150 ℃ of temperature precalcinings 2.5 hours, promptly gets metatitanic acid neodymium Nd 2Ti 2O 7
Add ancillary component by predetermined proportion in principal constituent then, as shown in table 5, composition is by mole per-cent in the table.Press the electrical property of the method Computer-Assisted Design, Manufacture And Test multiple-layer sheet ceramic capacitor of example 1, test result such as table 6 show.
Table 5
Title material BaNd 2Ti 5O 14 Nd 2Ti 2O 7 The content of each ancillary component
ZnO B 2O 3 SiO 2 Li 2O CaO ZrO 2 Bi 2O 3 TiO 2
19 51 35 9.5 6.6 6.0 0.2 0.4 0.8 0.3 0.15
20 51 35 9.5 6.6 6.0 0.2 0.4 0.8 0.3 0.25
21 51 35 9.5 6.6 6.0 0.2 0.3 0.8 0.3 0.35
22 51 35 9.5 6.6 6.0 0.2 0.3 0.8 0.7 -
23 51 35 9.5 6.6 6.0 0.2 0.6 1.2 0.1 -
Table 6
The invention material Specific inductivity Loss tangent (* 10-4) Temperature factor (PPM/ ℃) Insulation resistance (Ω)
19 55 5 -25 ≥10 11
20 57 4 -17 ≥10 11
21 59 5 -15 ≥10 11
22 58 5 -19 ≥10 11
23 54 4 -23 ≥10 11
From table 6, can see, not only satisfy the COG characteristic of EIA standard, and show high specific inductivity and superior dielectric properties according to multiple-layer sheet ceramic capacitor of the present invention.Be in particular in: specific inductivity is about 54～59, loss tangent: (4～5) * 10 -4Between-55～+ 125 ℃, temperature coefficient of permittivity Tcc is 0 ± 30ppm/ ℃.

Claims (10)

1. the BaO-Nd of a high frequency heat stable 2O 3-TiO 2Be ceramic medium material, it is characterized in that in molar percentage, described ceramic medium material comprises following composition:
Principal crystalline phase is BaNd 2Ti 4+xO 12+2x, its content between 45～65%, wherein, 0≤X≤1.5;
Ancillary component is 26～42% Nd 2Ti 2O 7, 7～13% ZnO, 4.0～8.0% B 2O 3, 3.0～9.0% SiO 2And 0.5～2% Li 2O.
2. ceramic medium material as claimed in claim 1 is characterized in that, in molar percentage, described ceramic medium material also comprise 0.3～4.0%, be selected from Bi 2O 3, TiO 2, ZrO 2With one or more the compound among the CaO.
3. ceramic medium material as claimed in claim 1 or 2 is characterized in that, at described principal crystalline phase BaNd 2Ti 4+xO 12Among+the 2x, 0≤X≤1.0.
4. ceramic medium material as claimed in claim 1 or 2 is characterized in that, described principal crystalline phase BaNd 2Ti 4+xO 12+2xBe by BaCO 3, Nd 2O 3And TiO 2Make at 1100～1200 ℃ of temperature lower calcinations.
5. ceramic medium material as claimed in claim 1 or 2 is characterized in that, described Nd 2Ti 2O 7Be that Nd is arranged 2O 3And TiO 2Make by the precalcining under 1050～1150 ℃ of temperature of 1: 2 mol ratio.
6. ceramic medium material as claimed in claim 1 or 2 is characterized in that, the mean particle size size of described ceramic medium material is between 0.7～1.7 micron.
7. multiple-layer sheet ceramic capacitor, this ceramic condenser comprises ceramic dielectric layer, interior electrode and end electrode, it is characterized in that, described ceramic dielectric layer is by the BaO-Nd with following mole percentage composition content 2O 3-TiO 2Be that ceramic medium material makes:
Principal crystalline phase is BaNd 2Ti 4+xO 12+2x, its content between 45～65%, wherein, 0≤X≤1.5;
Ancillary component is 26～42% Nd 2Ti 2O 7, 7～13% ZnO, 4.0～8.0% B 2O 3, 3.0～9.0% SiO 2And 0.5～2% Li 2O.
8. ceramic condenser as claimed in claim 7 is characterized in that, described BaO-Nd 2O 3-TiO 2Be ceramic medium material also comprise 0.3～4.0%, be selected from Bi 2O 3, TiO 2, ZrO 2With one or more the compound among the CaO.
9. as claim 7 or 8 described ceramic condensers, it is characterized in that, at described BaO-Nd 2O 3-TiO 2Be the principal crystalline phase BaNd of ceramic medium material 2Ti 4+xO 12+2xIn, 0≤X≤1.0.
10. as claim 7 or 8 described ceramic condensers, it is characterized in that the specific inductivity of described ceramic condenser is 50～60.
CNB2003101176436A 2003-12-30 2003-12-30 High frequency thermostable titanium barium neodymium base ceramic medium materials and multilayer sheet type ceramic capacitor Expired - Fee Related CN100372802C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2003101176436A CN100372802C (en) 2003-12-30 2003-12-30 High frequency thermostable titanium barium neodymium base ceramic medium materials and multilayer sheet type ceramic capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2003101176436A CN100372802C (en) 2003-12-30 2003-12-30 High frequency thermostable titanium barium neodymium base ceramic medium materials and multilayer sheet type ceramic capacitor

Publications (2)

Publication Number Publication Date
CN1634799A CN1634799A (en) 2005-07-06
CN100372802C true CN100372802C (en) 2008-03-05

Family

ID=34843660

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2003101176436A Expired - Fee Related CN100372802C (en) 2003-12-30 2003-12-30 High frequency thermostable titanium barium neodymium base ceramic medium materials and multilayer sheet type ceramic capacitor

Country Status (1)

Country Link
CN (1) CN100372802C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100381392C (en) * 2006-11-24 2008-04-16 北京航空航天大学 Method for preparing nano BaLn2Ti3O10 heat-barrier coating ceramic layer material
CN102690118B (en) * 2011-03-22 2014-09-17 清华大学 NP0 type ceramic capacitor dielectric material and its preparation method
CN103553599B (en) * 2013-09-27 2015-03-11 广东风华高新科技股份有限公司 ZNT-BRT composite microwave dielectric ceramic and its preparation method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1067037A (en) * 1992-05-11 1992-12-16 上海无线电六厂 High-k, high stable, low-loss ceramic medium material and manufacture method
JP2000143341A (en) * 1998-09-11 2000-05-23 Murata Mfg Co Ltd Dielectric ceramic composition and multilayer ceramic part
US20020132127A1 (en) * 2001-01-10 2002-09-19 Murata Manufacturing Co., Ltd. Nonreducing dielectric ceramic and ceramic electronic component using same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1067037A (en) * 1992-05-11 1992-12-16 上海无线电六厂 High-k, high stable, low-loss ceramic medium material and manufacture method
JP2000143341A (en) * 1998-09-11 2000-05-23 Murata Mfg Co Ltd Dielectric ceramic composition and multilayer ceramic part
US20020132127A1 (en) * 2001-01-10 2002-09-19 Murata Manufacturing Co., Ltd. Nonreducing dielectric ceramic and ceramic electronic component using same

Also Published As

Publication number Publication date
CN1634799A (en) 2005-07-06

Similar Documents

Publication Publication Date Title
KR100444230B1 (en) Nonreducible dielectric ceramic composition
KR20090050665A (en) Dielectric ceramic compositions for low temperature sintering and high hot-ir, and multilayer ceramic capacitor using the same
KR19980070404A (en) Monolithic ceramic capacitors
JP2004504712A (en) Ceramic material and capacitor having the ceramic material
JP3471839B2 (en) Dielectric porcelain composition
CN100364924C (en) Titanium barium base ceramic medium materials and capacitor made thereform
JP2000272960A (en) Dielectric ceramic composition for microwave use, its production and electronic part for microwave use produced by using the dielectric ceramic composition for microwave use
CN100464382C (en) Zinc-magnesium titanate system ceramic dielectric material and prepared ceramic capacitor
CN100372802C (en) High frequency thermostable titanium barium neodymium base ceramic medium materials and multilayer sheet type ceramic capacitor
CN101333105B (en) X7RMLCC medium porcelain of thin medium
JP3084992B2 (en) Ceramic substrate
JPH013046A (en) Dielectric ceramic composition with high dielectric constant
JP3030557B2 (en) Electronic components using dielectric porcelain materials
JP2006104044A (en) Dielectric material and its production method
CN1634800A (en) Super low temperature sintered ceramic medium materials, manufacturing method thereof and capacitor made therefrom
JP2001114559A (en) Dielectric composition
JP2000264721A (en) Dielectric porcelain composition
JPH0676627A (en) Dielectric ceramic composition
JPH04264306A (en) Dielectric ceramic composition
JPH04264305A (en) Dielectric ceramic composition
CN115010488B (en) Low-firing low-dielectric high-Q high-stability microwave porcelain for capacitor
CN1635591A (en) High-frequency ceramic dielectric material, method for making same and produced capacitor
JP2004026543A (en) Dielectric porcelain composition and laminated ceramic component using the same
JPH0737427A (en) Dielectric ceramic composition
JPS62157605A (en) Dielectric porcelain compound

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080305

Termination date: 20191230

CF01 Termination of patent right due to non-payment of annual fee