CN101805180B - Ceramic powder composition, ceramic material and multilayer ceramic capacitor made of same - Google Patents
Ceramic powder composition, ceramic material and multilayer ceramic capacitor made of same Download PDFInfo
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- CN101805180B CN101805180B CN 201010130577 CN201010130577A CN101805180B CN 101805180 B CN101805180 B CN 101805180B CN 201010130577 CN201010130577 CN 201010130577 CN 201010130577 A CN201010130577 A CN 201010130577A CN 101805180 B CN101805180 B CN 101805180B
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- ceramic
- ceramic powder
- composition
- ceramic capacitor
- sintering
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Abstract
The invention discloses a ceramic powder composition, a ceramic material and a multilayer ceramic capacitor made of the same. The ceramic powder composition comprises a main component and a glass component, wherein the glass component accounts for 0.2 to 2.0 mole percent of the weight of the main component; the main component consists of (Ba1-xCax)mTiO3, alpha MgO, Re2O3, gamma MnO and delta B2O5; alpha, beta, gamma and delta are molar constants of proportionality; the element Re is selected from the group consisting of yttrium, chromium, terbium, dysprosium, holmium, erbium, thulium and ytterbium; the element B is selected from the group consisting of vanadium, niobium and tantalum; and the glass constituent comprises (BayCa1-y)SiO3. The invention provides the ceramic powder composition which satisfies the temperature range of X5R, the ceramic material and the multilayer ceramic capacitor made of the same.
Description
Technical field
The present invention is about a kind of ceramic powder composition, ceramic material and made monolithic ceramic capacitor thereof, and particularly relevant for a kind of ceramic powder composition, ceramic material and made monolithic ceramic capacitor thereof that meets the X5R temperature range.
Background technology
In recent years; Because the development trend of electronic building brick is towards miniaturization, chipization, multifunction and high capacity; Various integrated technology begin to come into one's own, and capacitor is no exception, and the design that approaches littleization and multiple stratification except assembly has been the inevitable trend; The dielectric material designing requirement of high capacity and tiny crystal grains structure is also rigorous day by day, so the development of ceramic capacitor is also towards developing in the direction of minimum volume performance maximum function.
The application of commercial ceramic capacitor can slightly be divided into specifications such as Y5V, X5R, X7R, X8R, and wherein the desired basically specification of X5R refers in temperature range between-55 ℃～85 ℃, and its relative appearance value variable quantity is between+15～-15%.
Summary of the invention
The present invention provides a kind of ceramic powder composition, can meet the X5R temperature range.
The present invention provides a kind of ceramic material, can meet the X5R temperature range.
The present invention provides a kind of monolithic ceramic capacitor, can meet the X5R temperature range.
The present invention proposes a kind of ceramic powder composition, and said ceramic powder constituent comprises main composition and nature of glass composition, and the content of nature of glass composition is 0.2～2.0mol% with respect to this main composition, and wherein main composition is by (Ba
1-xCa
x)
mTiO
3+ α MgO+ β Re
2O
3+ γ MnO+ δ B
2O
5Form, wherein α, β, γ and δ are the molar ratio constant, 0.1≤α≤3.0; 0.05≤β≤3.0,0.001≤γ≤0.2,0＜δ≤0.1; And 0.99≤m≤1.030,0.005≤x≤0.015, and element Re is selected from the group that yttrium, chromium, terbium, dysprosium, holmium, erbium, thulium and ytterbium are formed; Element B is selected from the group that vanadium, niobium and tantalum are formed, and nature of glass composition comprises (Ba
yCa
1-y) SiO
3, 0＜y＜1 wherein.
The present invention proposes a kind of ceramic material in addition, is formed by above-mentioned ceramic powder composition institute sintering.
The present invention proposes a kind of monolithic ceramic capacitor in addition, and monolithic ceramic capacitor comprises ceramic dielectric matter, a plurality of internal electrode, a plurality of internal electrode and at least one outer electrode.Ceramic dielectric matter by as above-mentioned ceramic powder composition sintering form, and these internal electrodes extend in parallel in this ceramic dielectric matter, and outer electrode then is exposed to outside the ceramic dielectric matter, and electrically connect those internal electrodes.
In sum, the present invention sees through the mutual collocation between main composition and the nature of glass composition, and a kind of ceramic powder composition, ceramic material and made monolithic ceramic capacitor thereof of the X5R of meeting temperature range is provided.
Description of drawings
Fig. 1 is the graph of a relation of monolithic ceramic capacitor appearance value rate of change and temperature; And
Fig. 2 is the section of structure of monolithic ceramic capacitor.
Embodiment
Below will the ceramic powder composition according to preferred embodiments of the present invention be described, and be convenient to understand that the same components in the following execution mode is explained with identical symbology for making with reference to relevant indicators.
Ceramic powder composition of the present invention; Arrange in pairs or groups each other with the main composition of specific ratios and nature of glass composition and to carry out sintering; Wherein the content of nature of glass composition is 0.2～2.0mol% with respect to this main composition; In other words, when the ratio of main composition was 1 mole, the ratio of nature of glass composition can be between 0.002 to 0.02 mole.See through aforementioned proportion main composition and nature of glass composition are carried out after the sintering, a kind of ceramic powder composition of the X5R of meeting temperature range can be provided.
Main composition is by (Ba
1-xCa
x)
mTiO
3+ α MgO+ β Re
2O
3+ γ MnO+ δ B
2O
5Form, wherein α, β, γ and δ are the molar ratio constant, 0.1≤α≤3.0; 0.05≤β≤3.0,0.001≤γ≤0.2,0＜δ≤0.1; And 0.99≤m≤1.030; 0.005≤x≤0.015, and element Re is selected from the group that yttrium (Y), chromium (Cr), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm) and ytterbium (Yb) are formed, element B is selected from the group that vanadium (V), niobium (Nb) and tantalum (Ta) are formed.
Nature of glass composition is (Ba
yCa
1-y) SiO
3(hereinafter to be referred as BCG), 0＜y＜1 wherein, the scope of preferable numerical value y is 0.3≤y≤0.6, and nature of glass composition BCG is a kind of BaO, CaO and SiO of comprising
2Material.
The main composition of aforementioned proportion and nature of glass composition arranged in pairs or groups each other carry out sintering, sintering temperature after sintering, just can form ceramic material approximately between 1190 ℃～1300 ℃, is applied to the laminated ceramic capacitance component.
Below enumerate experimental example 1 to experimental example 4 the present invention is described, wherein the nature of glass composition of experimental example 1 to experimental example 4 is an example with material B CG, but the present invention is not limited in following experimental example.
Experimental example 1
Experimental example 1 is to observe to change in the main composition: (Ba
1-xCa
x)
mTiO
3X value and the execution mode of m value.Please consult table 1 earlier, MgO, Y in the fixing respectively main composition of table 1
2O
3, MnO, V
2O
5, Cr
2O
3With the mixed proportion of nature of glass composition (BCG), wherein MgO, Y
2O
3, MnO, V
2O
5, Cr
2O
3Be respectively 2.3,0.13,0.007,0.024,1.74 and 1.87 with fixing interpolation mole hundred ratios of BCG, and X value that changes and m value scope are between 0.01≤x≤0.06,0.9948≤m≤0.9988.
See also table 2, table 2 be with 9 groups shown in the table 1 (A1～A9), the performance of the characteristic of ceramic material can be known from table 2 behind sintering below 1235 ℃, the ceramic powder master composition of A1～A9 group, its characteristic performance all can meet the X5R specification.
Table 1:
Table 2:
Experimental example 2
Experimental example 2 is to observe the experimental example that changes nature of glass composition (BCG) content and sintering temperature.See also table 3, the content of the fixing main composition of table 3 is (Ba
0.09Ca
0.01)
0.9968TiO
3(BC1T)+0.75mol%MgO+1.42mol%Y
2O
3+ 0.0667mol%MnO+0.074mol%V
2O
5+ 1.14mol%Cr
2O
3, and the content of change nature of glass composition (BCG), the content of the nature of glass composition (BCG) of change is between 0.48～1.27mol%.
See also table 4, table 4 is that (B1～B4), the performance of the characteristic of ceramic material can know that from table 4 sintered density all can be greater than 5.6g/cm behind 1190,1205,1220,1235 ℃ of sintering of different sintering temperatures with 4 groups shown in the table 2
3And the maximum dielectric constant can be to 3550, and its characteristic performance all can meet the X5R specification.
Table 3:
Table 4:
Experimental example 3
Experimental example 3 is to observe to change MgO and Y in the main composition
2O
3The execution mode of addition.Please consult table 5 earlier, table 5 is that fixing main composition is: (Ba
0.98Ca
0.02)
0.9968TiO
3(BC2T)+α MgO+ β Y
2O
3+ 0.0667mol%MnO+0.074mol%V
2O
5+ 1.14mol%Cr
2O
3, 0.1≤α≤3.0,0.05≤β≤3.0 wherein, and nature of glass composition (BCG) is 0.79mol%.
See also table 6, table 6 be with 7 groups shown in the table 5 (C1～C7), the performance of the characteristic of ceramic material can be known from table 7 behind sintering below 1220 ℃, the ceramic powder master composition of C1～C7 group, its sintered density all can be greater than 5.6g/cm
3, and as α MgO and β Y
2O
3When addition dropped on 0.1≤α≤3.0,0.05≤β≤3.0mol%, its characteristic performance all can meet the X5R specification.
Table 5:
Table 6:
Experimental example 4
Experimental example 4 is to observe to change MnO and V in the main composition
2O
5The execution mode of addition.Please consult table 7 earlier, table 7 is that fixing main composition is: (Ba
0.98Ca
0.02)
0.9968TiO
3+ 0.75mol%MgO+1.42mol%Y2O3+ γ mol%MnO+ δ mol%V
2O
5+ 1.14mol%Cr
2O
3, 0.001≤γ≤0.2,0＜δ≤0.1 wherein, and nature of glass composition (BCG) is 0.79mol%.
See also table 8, table 8 be with 5 groups shown in the table 7 (D1～D5), the performance of the characteristic of ceramic material can be known from table 8 behind sintering below 1220 ℃, the ceramic powder master composition of D1～D5 group, its sintered density all can be greater than 5.6g/cm
3, and drop on 0.001≤γ≤0.2mol% when γ MnO+ δ V2O5 addition, during 0.0≤δ≤0.1mol%, its characteristic performance all can meet the X5R specification.
Table 7:
Table 8:
Experimental example 5
With the sample A2 of above-mentioned experimental example 1 and the sample B4 of experiment 2, experimentize and observe the graph of a relation of its appearance value rate of change and temperature.See also Fig. 1; Fig. 1 is the monolithic ceramic capacitor appearance value rate of change of sample A2 and sample B4 and the graph of a relation of temperature; Can know by Fig. 1; The appearance value variable quantity of the monolithic ceramic capacitor of A2 and B4 group meets the X5R temperature range, that is in temperature range between-55 ℃～85 ℃, its relative appearance value variable quantity is between+15%～-15%.
Ceramic powder composition of the present invention mainly can be applicable to the laminated ceramic capacitance component.Please refer to Fig. 2, Fig. 2 is the section of structure of monolithic ceramic capacitor.The monolithic ceramic capacitor 1 that Fig. 4 illustrated; Comprise capacitance ceramic body 110 and outer electrode 120; The plural layer internal electrode 111 that capacitance ceramic body 110 comprises plural layer dielectric ceramic layer 112 and forms along the surface of dielectric ceramic layer; Outer electrode 120 is formed at outside the capacitance ceramic body 110, and electrically connects with internal electrode partly 111, and wherein internal electrode 111 can be nickel electrode.
What must specify is the dielectric ceramic layer 112 of monolithic ceramic capacitor 1; Dielectric ceramic layer 112 is to be formed by ceramic powder composition of the present invention institute sintering, and sintering temperature is 1190 ℃～1300 ℃, after sintering is accomplished; Can know by experimental result; See through ceramic powder composition sintering of the present invention and form above-mentioned dielectric ceramic layer 112, the appearance value variable quantity of the monolithic ceramic capacitor of its formation meets the X5R temperature range, that is in temperature range between-55 ℃～85 ℃; Its relative appearance value variable quantity so can provide a kind of monolithic ceramic capacitor of the X5R of meeting temperature range between+15%～-15%.
In sum, the present invention sees through the mutual collocation between main composition and the nature of glass composition, and a kind of ceramic powder composition, ceramic material and made monolithic ceramic capacitor thereof of the X5R of meeting temperature range is provided.
Though the present invention discloses as above with aforementioned embodiments, so it is not in order to limiting the present invention, anyly has the knack of alike art, and in the spirit that does not break away from the present invention and scope, institute does change and the equivalence of retouching is replaced, and still is in the scope of patent protection of the present invention.
Claims (10)
1. a ceramic powder feedstock composition is characterized in that, comprising:
Main composition is by (Ba
1-xCa
x)
mTiO
3, MgO, Re
2O
3, MnO, B
2O
5Form, wherein MgO, Re
2O
3, MnO, B
2O
5The molar ratio constant be respectively α, β, γ and δ, 0.1≤α≤3.0,0.05≤β≤3.0; 0.001≤γ≤0.2; 0＜δ≤0.1, and 0.99≤m≤1.030,0.005≤x≤0.015; And element Re is selected from the group that yttrium (Y), chromium (Cr), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm) and ytterbium (Yb) are formed, and element B is selected from the group that vanadium (V), niobium (Nb) and tantalum (Ta) are formed; And
Nature of glass composition, its content is 0.2～2.0mol% with respect to this main composition, comprises (Ba
yCa
1-y) SiO
3, 0＜y＜1 wherein.
2. ceramic powder feedstock composition according to claim 1 is characterized in that: the scope of said numerical value y is 0.3≤y≤0.6.
3. ceramic powder feedstock composition according to claim 1 is characterized in that: said element B is vanadium (V).
4. ceramic powder feedstock composition according to claim 1 is characterized in that: said element Re is yttrium (Y) or chromium (Cr).
5. a ceramic material is characterized in that, comprises: formed by any described ceramic powder feedstock composition of claim sintering in the claim 1 to 4.
6. ceramic material according to claim 5 is characterized in that: the sintering temperature of said ceramic material is 1190 ℃～1300 ℃.
7. a monolithic ceramic capacitor is characterized in that, comprises:
Ceramic dielectric matter is formed by the dielectric ceramic compositions sintering, and this dielectric ceramic compositions comprises like the described ceramic powder feedstock composition of any claim in the claim 1 to 4;
A plurality of internal electrodes extend in parallel in this ceramic dielectric matter; And
At least one outer electrode is exposed to outside this ceramic dielectric matter, and electrically connects those internal electrodes.
8. monolithic ceramic capacitor according to claim 7 is characterized in that: the appearance matter variable quantity of this monolithic ceramic capacitor meets the X5R temperature range, that is in temperature range between-55 ℃～85 ℃, it holds the matter variable quantity relatively between+15%～-15%.
9. monolithic ceramic capacitor according to claim 7 is characterized in that: this internal electrode is a nickel electrode.
10. monolithic ceramic capacitor according to claim 7 is characterized in that: the sintering temperature of this ceramic dielectric matter is 1190 ℃～1300 ℃.
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|---|---|---|---|
| CN 201010130577 CN101805180B (en) | 2010-03-03 | 2010-03-03 | Ceramic powder composition, ceramic material and multilayer ceramic capacitor made of same |
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|---|---|---|---|
| CN 201010130577 CN101805180B (en) | 2010-03-03 | 2010-03-03 | Ceramic powder composition, ceramic material and multilayer ceramic capacitor made of same |
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| Publication Number | Publication Date |
|---|---|
| CN101805180A CN101805180A (en) | 2010-08-18 |
| CN101805180B true CN101805180B (en) | 2012-12-12 |
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|---|---|---|---|
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186315A (en) * | 1996-12-06 | 1998-07-01 | 株式会社村田制作所 | Ceramic composition and multilayer ceramic capacitor made therefrom |
| EP1708212A2 (en) * | 2005-03-29 | 2006-10-04 | Samsung Electro-Mechanics Co., Ltd. | Method for manufacturing dielectric ceramic powder, and multilayer ceramic capacitor obtained by using the ceramic powder |
| CN101194327A (en) * | 2005-06-07 | 2008-06-04 | 凯米特电子公司 | Dielectric ceramic capacitor comprising non-reducible dielectric |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006237273A (en) * | 2005-02-24 | 2006-09-07 | Kyocera Corp | Electronic part and its manufacturing method, and mobile phone and digital tuner using the same |
-
2010
- 2010-03-03 CN CN 201010130577 patent/CN101805180B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1186315A (en) * | 1996-12-06 | 1998-07-01 | 株式会社村田制作所 | Ceramic composition and multilayer ceramic capacitor made therefrom |
| EP1708212A2 (en) * | 2005-03-29 | 2006-10-04 | Samsung Electro-Mechanics Co., Ltd. | Method for manufacturing dielectric ceramic powder, and multilayer ceramic capacitor obtained by using the ceramic powder |
| CN101194327A (en) * | 2005-06-07 | 2008-06-04 | 凯米特电子公司 | Dielectric ceramic capacitor comprising non-reducible dielectric |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-237273A 2006.09.07 |
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|---|---|
| CN101805180A (en) | 2010-08-18 |
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