JP2568567B2 - Dielectric porcelain composition - Google Patents
Dielectric porcelain compositionInfo
- Publication number
- JP2568567B2 JP2568567B2 JP62182545A JP18254587A JP2568567B2 JP 2568567 B2 JP2568567 B2 JP 2568567B2 JP 62182545 A JP62182545 A JP 62182545A JP 18254587 A JP18254587 A JP 18254587A JP 2568567 B2 JP2568567 B2 JP 2568567B2
- Authority
- JP
- Japan
- Prior art keywords
- composition
- dielectric
- tio
- dielectric constant
- main component
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
- Inorganic Insulating Materials (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は誘電率が高く、温度係数が小さく、良好度Ｑ
にすぐれ、かつ絶縁抵抗の高い誘電体磁器組成物に関す
るものである。The present invention has a high dielectric constant, a small temperature coefficient, and a good Q
The present invention relates to a dielectric ceramic composition having excellent insulation resistance and high insulation resistance.
従来の技術 従来から温度係数の小さい誘電体がコンデンサ用素子
として要求され、誘電体磁器組成物として下記のような
系が知られている。2. Description of the Related Art Conventionally, a dielectric having a small temperature coefficient has been required as an element for a capacitor, and the following system has been known as a dielectric ceramic composition.
・MgO−TiO2−CoO系 ・La2O3−2TiO2−CaTiO3−2MgO−TiO2系 ・TiO2−BaTiO3−Bi2O3−La2O3系 ・SrZrO3−SrO−Nb2O5−CaTiO3系 発明が解決しようとする問題点 しかし、これらの組成は誘電率が低く、また、SrZrO3
−SrO−Nb2O5−CaTiO3系は良好度Ｑも悪い。さらに、Bi
2O3を含んでいるものは、積層セラミックコンデンサの
内部電極として、Pdを用いることができないという問題
があった。・ MgO-TiO 2 -CoO system ・ La 2 O 3 -2TiO 2 -CaTiO 3 -2MgO-TiO 2 system ・ TiO 2 -BaTiO 3 -Bi 2 O 3 -La 2 O 3 system ・ SrZrO 3 -SrO-Nb 2 O 5 -CaTiO 3 system invention is the problem to be solved, however, these compositions have low dielectric constant, also, SrZrO 3
The —SrO—Nb 2 O 5 —CaTiO 3 system also has poor Q. In addition, Bi
Those containing 2 O 3 have a problem that Pd cannot be used as an internal electrode of the multilayer ceramic capacitor.
本発明はこのような問題点を解決するもので、誘電率
が高く、温度係数が小さく、良好度Ｑにすぐれ、かつ絶
縁抵抗が高い誘電体磁器を得ることを目的とするもので
ある。An object of the present invention is to solve such a problem and to provide a dielectric ceramic having a high dielectric constant, a small temperature coefficient, a good Q, and a high insulation resistance.
問題点を解決するための手段 この問題点を解決するために本発明は、一般式 xBaO−ｙ〔（TiO2）1-m（ZrO2）ｍ〕−zLa2O3 と表わした時、x,y,zが以下に表わす各点a,b,c,dで囲ま
れるモル比の範囲にある組成物を主成分としたことを特
徴とする誘電体磁器組成物である。Means for Solving the Problems In order to solve the problems, the present invention provides a compound represented by the general formula xBaO-y [(TiO 2 ) 1-m (ZrO 2 ) m ] -zLa 2 O 3 When represented, x, y, z is a dielectric porcelain composition characterized by being mainly composed of a composition in the range of the molar ratio surrounded by each point a, b, c, d shown below is there.
図は本発明にかかる組成物の主成分の組成範囲を示す
三角図であり、主成分の組成範囲を限定した理由を図を
参照しながら説明する。まず、Ａ領域では焼結困難とな
り、誘電率，良好度Q,絶縁抵抗が低下する。また、Ｂ領
域では温度係数が−側に大きくなり過ぎて、実用的でな
くなる。さらにＣ領域では温度係数が＋側に大きくな
り、誘電率も小さい。そしてＤ領域では焼結が困難とな
り、誘電率，良好度Q,絶縁抵抗が低下する。また、Ｏ＜
ｍ≦0.25の範囲では、ｍを大きくすると温度係数は＋側
に移行し、適当な組成を選ぶことによって温度係数が良
好で誘電率の大きな組成が得られる。しかし、ｍが0.25
を越えると焼結が困難となり、誘電率，良好度Q,絶縁抵
抗が低下する。 The figure is a triangular diagram showing the composition range of the main components of the composition according to the present invention, and the reason for limiting the composition range of the main components will be described with reference to the drawings. First, in the region A, sintering becomes difficult, and the dielectric constant, the quality factor Q, and the insulation resistance decrease. In the region B, the temperature coefficient becomes too large on the negative side, which is not practical. Further, in the C region, the temperature coefficient increases toward the + side, and the dielectric constant is small. In the D region, sintering becomes difficult, and the dielectric constant, the quality factor Q, and the insulation resistance decrease. Also, O <
In the range of m ≦ 0.25, when m is increased, the temperature coefficient shifts to the + side, and a composition having a good temperature coefficient and a large dielectric constant can be obtained by selecting an appropriate composition. But m is 0.25
If it exceeds sintering, sintering becomes difficult, and the dielectric constant, goodness Q, and insulation resistance decrease.
本発明はさらに上記主成分に対し、マンガン，クロ
ム，鉄，ニッケル，コバルト及びケイ素の酸化物からな
る群の中から選ばれた少なくとも１種を、それぞれMn
O2,Cr2O3,FeO,NiO,CoO及びSiO2に換算して、上記主成分
の0.05〜1.00重量％添加せしめた構成としたものであ
る。これらの添加物は磁器の焼結性を向上する効果を有
し、その添加量が0.05重量％未満では添加効果はなく、
1.00重量％を越えると誘電率が低下し実用的でなくな
る。The present invention further provides at least one selected from the group consisting of oxides of manganese, chromium, iron, nickel, cobalt and silicon with respect to the above-mentioned main components,
The composition is such that 0.05 to 1.00% by weight of the above main component is added in terms of O 2 , Cr 2 O 3 , FeO, NiO, CoO and SiO 2 . These additives have the effect of improving the sinterability of the porcelain.
If it exceeds 1.00% by weight, the dielectric constant is lowered and it is not practical.
作 用 本発明の誘電体磁器組成物により、誘電率が高く、温
度係数が小さく、良好度Ｑにすぐれ、かつ絶縁抵抗が高
い誘電体磁器を得ることができる。The dielectric porcelain composition of the present invention can provide a dielectric porcelain having a high dielectric constant, a small temperature coefficient, an excellent quality factor Q, and a high insulation resistance.
実施例 以下に本発明を具体的実施例により説明する。EXAMPLES Hereinafter, the present invention will be described with reference to specific examples.
（実施例１） 出発原料には化学的に高純度のBaCO3,TiO2,ZrO2及びL
a2O3粉末を下記の第１表に示す組成になるように秤量
し、めのうボールを備えたゴム内張りしたボールミルに
純水とともに入れ、湿式混合後、脱水乾燥した。この乾
燥粉末を高アルミナ質のルツボに入れ、1100℃で２時間
仮焼した。この仮焼粉末をめのうボールを備えたゴム内
張りしたボールミルに純水とともに入れ、湿式粉砕し
た。この粉砕物を脱水乾燥した後、粉末にバインダーと
して濃度５％のポリビニールアルコール溶液を９重量％
添加して均質とした後、32メッシュのふるいを通して整
粒した。その後、この整粒粉体を金型と油圧プレスを用
いて成形圧力1ton/cm2で直径15mm,厚み0.4mmに成形し、
成形物をジルコニア厘鉢中に入れ、空気中において下記
の第１表に示す温度で２時間焼成し、第１表に示す配合
組成の誘電体磁器を得た。(Example 1) As starting materials, chemically pure BaCO 3 , TiO 2 , ZrO 2 and L
The a 2 O 3 powder was weighed so as to have the composition shown in Table 1 below, placed in a rubber-lined ball mill equipped with an agate ball together with pure water, wet-mixed, and dehydrated and dried. The dried powder was placed in a high alumina crucible and calcined at 1100 ° C. for 2 hours. The calcined powder was put together with pure water in a rubber-lined ball mill equipped with an agate ball and wet-pulverized. After dehydrating and drying the pulverized material, 9% by weight of a polyvinyl alcohol solution having a concentration of 5% as a binder is added to the powder.
After the addition, the mixture was homogenized and sized through a 32 mesh sieve. Thereafter, molding the granulated powder diameter 15mm at a molding pressure of 1 ton / cm 2 using a mold and a hydraulic press, the thickness of 0.4 mm,
The molded product was placed in a zirconia bowl and calcined in air at a temperature shown in Table 1 below for 2 hours to obtain a dielectric ceramic having a composition shown in Table 1.
これらの試料の電気特性は、試料の両面に銀電極を焼
き付け、誘電率，良好度Q,温度係数は横河・ヒューレッ
ト・パッカード株式会社製デジタルLCRメータのモデル4
275Aを使用し、測定温度25℃，測定電圧1.0Vrms,測定周
波数1MHzによる測定より求めた。なお、温度係数は25℃
における容量値を基準とし、次式により求めた。The electrical characteristics of these samples were determined by burning silver electrodes on both sides of the sample and measuring the dielectric constant, goodness Q, and temperature coefficient of a digital LCR meter model 4 manufactured by Yokogawa-Hewlett-Packard Co., Ltd.
Using a 275A, measured at a measurement temperature of 25 ° C, a measurement voltage of 1.0 Vrms, and a measurement frequency of 1 MHz. The temperature coefficient is 25 ° C
Was determined by the following equation based on the capacitance value at.
温度係数（ppm/℃） ＝〔（Ｃ85℃−Ｃ25℃）／（Ｃ25℃×60）〕×106 また、絶縁抵抗は横河・ヒューレット・パッカード株
式会社製HRメータのモデル4329Aを使用し、測定電圧D.
C.50V,測定時間１分間による測定より求めた。試験結果
を第１表に併せて示した。Temperature coefficient (ppm / ℃) = [(C 85 ℃ -C 25 ℃) / (C 25 ℃ × 60) ] × 10 6 Further, the insulation resistance is a model 4329A of HR meter manufactured by Yokogawa-Hewlett-Packard Co. Use and measure voltage D.
C. It was determined from the measurement at 50 V for a measurement time of 1 minute. The test results are also shown in Table 1.
（実施例２） 出発原料には化学的に高純度のBaCO3,TiO2,ZrO2,La2O
3,MnO2,Cr2O3,FeO,NiO,CoO,及びSiO2粉末を下記の第２
表に示す組成になるように秤量し、それ以後は上記実施
例１の場合と同様に処理して第２表に示す配合組成の誘
電体磁器を得た。 (Example 2) As starting materials, chemically pure BaCO 3 , TiO 2 , ZrO 2 , La 2 O
3 , MnO 2 , Cr 2 O 3 , FeO, NiO, CoO, and SiO 2 powder
It was weighed so as to have the composition shown in the table, and thereafter processed in the same manner as in Example 1 to obtain a dielectric ceramic having the composition shown in Table 2.
これらの試料の試験方法は実施例１と同一であり、試
験結果を第２表に併せて示す。The test method for these samples is the same as in Example 1, and the test results are shown in Table 2.
発明の効果 以上のように本発明によれば、誘電率が高く、温度係
数が小さく、良好度Ｑにすぐれ、かつ絶縁抵抗の高い誘
電体磁器が得られる。また、マンガン，クロム，鉄，ニ
ッケル，コバルト及びケイ素の酸化物の添加により、焼
成温度を低下させることができる。 Effects of the Invention As described above, according to the present invention, a dielectric ceramic having a high dielectric constant, a small temperature coefficient, an excellent goodness Q, and a high insulation resistance can be obtained. Further, the firing temperature can be lowered by adding oxides of manganese, chromium, iron, nickel, cobalt and silicon.
さらに、得られた誘電体磁器は高誘電率であるため、
素体をきわめて小形にすることができ、回路の微小化に
有効であり、特に薄層状にして積層セラミックコンデン
サ，ハイブリット微小回路などの用途に適している。Furthermore, since the obtained dielectric porcelain has a high dielectric constant,
The element body can be made extremely small and is effective for miniaturization of circuits, and is particularly suitable for applications such as laminated ceramic capacitors and hybrid microcircuits in the form of thin layers.
図は本発明にかかる主成分の組成範囲を示す三角図であ
る。The figure is a triangular diagram showing the composition range of the main component according to the present invention.
Claims (2)
れるモル比の範囲にある組成物を主成分としたことを特
徴とする誘電体磁器組成物。 1. The formula xBaO-y [(TiO 2 ) 1-m (ZrO 2 ) m ] -zLa 2 O 3 A dielectric ceramic composition characterized in that x, y and z are represented by the following points a, b, c and d, and the composition is in a molar ratio range as a main component.
れるモル比の範囲にある組成物を主成分とし、マンガ
ン，クロム，鉄，ニッケル，コバルト及びケイ素の酸化
物からなる群の中から選ばれた少なくとも１種を、それ
ぞれMnO2,Cr2O3,FeO,NiO,CoO及びSiO2に換算して、上記
主成分の0.05乃至1.00重量％添加含有したことを特徴と
する誘電体磁器組成物。 2. The general formula xBaO-y [(TiO 2 ) 1-m (ZrO 2 ) m ] -zLa 2 O 3 When the main component is a composition in which x, y, and z are in the range of the molar ratio surrounded by the following points a, b, c, and d, manganese, chromium, iron, nickel, cobalt, and silicon At least one selected from the group consisting of oxides of the above is converted to MnO 2 , Cr 2 O 3 , FeO, NiO, CoO and SiO 2 , and 0.05 to 1.00% by weight of the main component is added and contained A dielectric porcelain composition, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62182545A JP2568567B2 (en) | 1987-07-22 | 1987-07-22 | Dielectric porcelain composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62182545A JP2568567B2 (en) | 1987-07-22 | 1987-07-22 | Dielectric porcelain composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6427109A JPS6427109A (en) | 1989-01-30 |
| JP2568567B2 true JP2568567B2 (en) | 1997-01-08 |
Family
ID=16120160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62182545A Expired - Fee Related JP2568567B2 (en) | 1987-07-22 | 1987-07-22 | Dielectric porcelain composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2568567B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9187375B2 (en) | 2014-04-18 | 2015-11-17 | Samsung Electro-Mechanics Co., Ltd. | Dielectric ceramic composition and multilayer ceramic capacitor containing the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2728595B2 (en) * | 1992-05-20 | 1998-03-18 | 京セラ株式会社 | Semiconductor device |
-
1987
- 1987-07-22 JP JP62182545A patent/JP2568567B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9187375B2 (en) | 2014-04-18 | 2015-11-17 | Samsung Electro-Mechanics Co., Ltd. | Dielectric ceramic composition and multilayer ceramic capacitor containing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6427109A (en) | 1989-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2568567B2 (en) | Dielectric porcelain composition | |
| JP3143922B2 (en) | Non-reducing dielectric ceramic composition | |
| JP2568566B2 (en) | Dielectric porcelain composition | |
| JP2568565B2 (en) | Dielectric porcelain composition | |
| JP2615636B2 (en) | Dielectric porcelain composition | |
| JP2676778B2 (en) | Dielectric porcelain composition | |
| JPH04188506A (en) | Dielectric porcelain composition | |
| JPH0815010B2 (en) | Dielectric porcelain composition | |
| JPS62243207A (en) | Dielectric porcelain compound | |
| JPH07211140A (en) | Dielectric ceramic composition | |
| JPH05266711A (en) | Dielectric ceramic composition | |
| JPH0587006B2 (en) | ||
| JPS62243208A (en) | Dielectric porcelain compound | |
| JPH0821258B2 (en) | Dielectric porcelain composition | |
| JP2684754B2 (en) | Dielectric porcelain composition | |
| JP3575299B2 (en) | Dielectric ceramic composition and multilayer ceramic capacitor using the same | |
| JPH02242516A (en) | Dielectric porcelain composition | |
| JPH02242517A (en) | Dielectric porcelain composition | |
| JP3106371B2 (en) | Dielectric porcelain composition | |
| JPH0329208A (en) | Dielectric ceramic composition | |
| JPH0517222A (en) | Porcelain composition for temperature compensation | |
| JPS63193403A (en) | Dielectric ceramic composition | |
| JPS63193404A (en) | Dielectric ceramic composition | |
| JPH04174907A (en) | Dielectric porcelain composition material | |
| JPH05339052A (en) | Dielectric ceramic composition for temperature compensation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |