JPS62113755A - Ceramic composition - Google Patents
Ceramic compositionInfo
- Publication number
- JPS62113755A JPS62113755A JP60255269A JP25526985A JPS62113755A JP S62113755 A JPS62113755 A JP S62113755A JP 60255269 A JP60255269 A JP 60255269A JP 25526985 A JP25526985 A JP 25526985A JP S62113755 A JPS62113755 A JP S62113755A
- Authority
- JP
- Japan
- Prior art keywords
- composition
- lead
- dielectric constant
- ceramic composition
- mol
- 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.)
- Granted
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、磁器組成物、特に１０５０℃以下の低温で焼
結でき、誘電率が高く、室温における絶縁抵抗が高い磁
器組成物に関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a ceramic composition, particularly a ceramic composition that can be sintered at a low temperature of 1050°C or less, has a high dielectric constant, and has a high insulation resistance at room temperature. be.
（従来の技術）
従来、誘電体磁器組成物として、チタン酸バリウム（Ｂ
ａＴｉＯｍ）を主成分とする磁器が広く実用化されてい
ることは周知のとおシである。しかしながら、チタン酸
バリウム（ＢａＴｉＯｌ）を主成分とするものは、焼結
温度が通常１３００〜１４００℃ の高温である。この
ためこれを積層形コンデンサに利用する場合には内部電
極としてこの焼結温度に耐え得る材料、例えば白金、パ
ラジウムなどの高価な貴金属を使用しなければならず、
製造コストが高くつくという欠点がある。積層形コンデ
ンサを安く作るためには、銀、ニッケルなどを主成分と
する安価な金用が内部電極に使用できるような、できる
だけ低温、特に１０５０℃以下で焼結できる磁器が必要
である。(Prior Art) Conventionally, barium titanate (B
It is well known that porcelain containing aTiOm as a main component has been widely put into practical use. However, those whose main component is barium titanate (BaTiOl) have a high sintering temperature of usually 1300 to 1400°C. Therefore, when using this in a multilayer capacitor, a material that can withstand this sintering temperature must be used for the internal electrode, such as an expensive noble metal such as platinum or palladium.
The disadvantage is that manufacturing costs are high. In order to manufacture multilayer capacitors at low cost, it is necessary to use porcelain that can be sintered at as low a temperature as possible, especially below 1050°C, so that inexpensive gold containing silver, nickel, etc. as the main ingredients can be used for the internal electrodes.
また磁器組成物の電気的特性として、誘電率が高く、誘
電損失が小さく、絶縁抵抗が高いことが基本的に要求さ
れる。Furthermore, the electrical properties of the ceramic composition are basically required to have a high dielectric constant, low dielectric loss, and high insulation resistance.
（発明が解決しようとする問題点）
この要求に答えるために本発明者等は特開昭５８−１６
１９７２号でＰｂ（Ｎ１％Ｎｂ呵）ｏ、−ｐｂ（Ｍｇイ
Ｗ％）Ｏ，−ＰｂＴｚＯ，からなる三成分磁器組成物を
提案した。この特開昭５８−１６１９７２号では誘電率
が３０６０−１３４００ 、誘電損失が０１〜３．８優
、２０℃における比抵抗が２．０Ｘ１０”〜１．２×１
０′３ という優れた特性を示す組成物が開示されて
いる。しかしながら他の特性を保持しながら更に誘電率
を高めることが望まれていた。(Problems to be Solved by the Invention) In order to meet this requirement, the present inventors have
In No. 1972, he proposed a three-component porcelain composition consisting of Pb(N1%Nb2)o, -pb(Mg2W%)O, and -PbTzO. In JP-A No. 58-161972, the dielectric constant is 3060-13400, the dielectric loss is 01 to 3.8, and the specific resistance at 20°C is 2.0 x 10" to 1.2 x 1.
Compositions are disclosed that exhibit excellent properties of 0'3. However, it has been desired to further increase the dielectric constant while maintaining other properties.
本発明の目的はｔｏｓｏ℃以下の低温で焼結でき、誘電
率が高く、誘電損失の小さいかつ比抵抗の高い積層コン
デンサ用磁器組成物を提供することにある。An object of the present invention is to provide a ceramic composition for a multilayer capacitor that can be sintered at a low temperature of toso° C. or lower, has a high dielectric constant, low dielectric loss, and high specific resistance.
（問題点を解決するための手段）
本発明は、マグネシウム・タングステン酸鉛（Ｐｂ（Ｍ
ｇ１４９１％）０１１’）、チタン酸鉛（ＰｂＴｔＯ，
）およびニッケル・ニオブ酸鉛ＣＰ ｂ （Ｎ ｉ ’
４Ｎ ｂ％）ｏｓ）カらなる３成分組成物を、（Ｐｂ（
ＭｇイＷイ）０３〕工（ｐｂＴｓｏ、）ア（Ｐｂ（Ｎｔ
イＮｂぢ）Ｏｓ）ｚと表わしたとｅＫ（ただＬ、Ｘ＋Ｙ
＋Ｚ＝ｔ、００） この３成分組成図において、以下
の組成点
（Ｘ＝０．６９３．Ｙ＝０．２９７．２＝０．０１”）
（Ｘ＝０．４９５ 、Ｙ＝０．４９５ 、 Ｚ＝０．０
１ ’）（Ｘ＝０．１９５ 、Ｙ＝０．４５５ 、Ｚ＝
０．３５ ）（Ｘ＝０．１０ 、Ｙ＝０．４０ 、
Ｚ＝０．５０）（Ｘ＝０．０６ 、Ｙ＝０．２４
、Ｚ＝０．７０）を結ぶ線上およびこの５点に囲まれる
組成範囲にある主成分組成物に副成分として亜鉛・ニオ
ブ酸鉛ｐｂ （Ｚｎ％Ｎｂ％）ｏ、を１ｍｏｌ％ないし
２０ｍｏ１％添加含有せしめることを特徴とする。(Means for Solving the Problems) The present invention provides magnesium lead tungstate (Pb(M
g1491%)011'), lead titanate (PbTtO,
) and nickel-lead niobate CP b (N i '
A three-component composition consisting of (Pb(
Mg I W I) 03] Engineering (pbTso,) A (Pb (Nt
iNbdi)Os)Z is expressed as eK(just L, X+Y
+Z=t, 00) In this three-component composition diagram, the following composition points (X=0.693.Y=0.297.2=0.01")
(X=0.495, Y=0.495, Z=0.0
1') (X=0.195, Y=0.455, Z=
0.35) (X=0.10, Y=0.40,
Z=0.50) (X=0.06, Y=0.24
, Z=0.70) and in the composition range surrounded by these five points, 1 mol% to 20 mol% of zinc/lead niobate pb (Zn%Nb%)o is added as a subcomponent to the main component composition on the line connecting Z=0.70) and within the composition range surrounded by these five points. It is characterized by containing.
（実施例）
出発原料として純度９９．９９６以上の酸化鉛（ＰｂＯ
）。(Example) Lead oxide (PbO
).
酸化マグネシウム（ＭｇＯ）、 酸化タングステン（
ＷＯ，）、酸化チタン（ＴｉＯ＊）、酸化ニッケル（Ｎ
ｉＯ）。Magnesium oxide (MgO), tungsten oxide (
), titanium oxide (TiO*), nickel oxide (N
iO).
酸化ニオブ（Ｎｂ１０Ｍ）および酸化亜鉛（ＺｎＯ）を
使用し、表に示した配合比となるように各々秤量する。Niobium oxide (Nb10M) and zinc oxide (ZnO) are used and each is weighed so as to have the compounding ratio shown in the table.
次に秤量した原料をボールミル中で湿式混合した後７５
０〜８００℃で予焼を行ない、この粉末をボールミルで
粉砕し、口割、乾燥後、有機バインダーを入れ整粒後プ
レスし、直径１６ｍ、厚さ約２Ｈの円板４枚を作成した
。次に本発明の組成範囲の試料は空気中９００〜１０５
０℃の温度で１時間焼結した。焼結した円板４枚の上下
面に銀電極を６００℃で焼付け、デジタルＬＣＲメータ
で周波数ＩＫＨｚ、電圧１”／ｒ−ｒｒｒｓ ｒ温度２
０℃で容量と誘を損失を測定し、誘電率を算出した。次
に超絶縁計で５０Ｖの電圧を１分間印加して、絶縁抵抗
を温度２０℃で測定し、比抵抗を算出した。各組成に対
応する特性は試料４点の平均値より求めた。Next, after wet-mixing the weighed raw materials in a ball mill, 75
Pre-baking was carried out at 0 to 800°C, and the powder was pulverized in a ball mill, split into pieces, dried, and then an organic binder was added thereto for sizing and pressing to produce four disks each having a diameter of 16 m and a thickness of about 2 H. Next, a sample having a composition range according to the present invention is 900 to 105 in air.
Sintering was carried out at a temperature of 0° C. for 1 hour. Silver electrodes were baked on the top and bottom surfaces of four sintered disks at 600°C, and a digital LCR meter was used to measure the frequency at IKHz, voltage 1”/r-rrrs r temperature 2
The capacitance and dielectric loss were measured at 0° C., and the dielectric constant was calculated. Next, a voltage of 50 V was applied for 1 minute using a super megohmmeter, the insulation resistance was measured at a temperature of 20° C., and the specific resistance was calculated. The characteristics corresponding to each composition were determined from the average value of four samples.
このようにして得られた磁器の配合比と誘電率。The composition ratio and dielectric constant of the porcelain thus obtained.
誘電損失、２０℃における比抵抗の関係を次表に示す。The relationship between dielectric loss and specific resistance at 20°C is shown in the table below.
表に示した結果から明らかなように、Ｐｂ（Ｍｇ％Ｗ％
）Ｏ，−ＰｂＴｉＯ，−Ｐｂ（Ｎｉ％Ｎｂイ）０．三成
分組成物に副成分であるＰｂ（ＺｎイＮｂｇ）Ｏ，を主
成分に対して１ｍｏｌ％ ないし２０ｍｏ１％ 添加含
有せしめた本発明は誘電損失や比抵抗を良好かつ実用的
水
な３準に保持しながら誘電率を高めており、積層コンデ
ンサ用磁器組成物として優れた材料を提供するものであ
る。As is clear from the results shown in the table, Pb(Mg%W%
)O, -PbTiO, -Pb (Ni%Nb)0. The present invention, in which Pb(Zn-Nbg)O, which is a sub-component, is added to the three-component composition in an amount of 1 mol% to 20 mol% relative to the main component, dielectric loss and resistivity can be reduced to a good and practical level of 3. It has a high dielectric constant while maintaining the same properties, and provides an excellent material as a ceramic composition for multilayer capacitors.
なお、本発明の主成分組成範囲外では焼結温度が高くな
ったシ誘電率が低下するため前述のように限定される。It should be noted that outside the main component composition range of the present invention, the dielectric constant decreases as the sintering temperature increases, so it is limited as described above.
また副成分が１ｍｏｌ５ｅ！未満および２０ｍｏ１％
を超えるものは誘電率の改善効果が小さくなる。Also, the subcomponent is 1mol5e! less than and 20mo1%
If it exceeds this value, the effect of improving the dielectric constant will be small.
（発明の効果）(Effect of the invention)
Claims (1)
＿２Ｗ＿１＿／＿２）Ｏ＿３〕、チタン酸鉛〔ＰｂＴｉ
Ｏ＿３〕およびニッケル・ニオブ酸鉛〔Ｐｂ（Ｎｉ＿１
＿／＿３Ｎｂ＿２＿／＿３）Ｏ＿２〕からなる３成分組
成物を〔Ｐｂ（Ｍｇ＿１＿／＿２Ｗ＿１＿／＿２）Ｏ＿
３〕＿ｘ〔ＰｂＴｉＯ＿３〕＿ｙ〔Ｐｂ（Ｎｉ＿１＿／
＿３Ｎｂ＿２＿／＿３）Ｏ＿３〕＿ｚと表わしたときに
（ただし、Ｘ＋Ｙ＋Ｚ＝１．００）この３成分組成図に
おいて、次下の組成点 （Ｘ＝０．６９３、Ｙ＝０．２９７、Ｚ＝０．０１）（
Ｘ＝０．４９５、Ｙ＝０．４９５、Ｚ＝０．０１）（Ｘ
＝０．１９５、Ｙ＝０．４５５、Ｚ＝０．３５）（Ｘ＝
０．１０、Ｙ＝０．４０、Ｚ＝０．５０）（Ｘ＝０．０
６、Ｙ＝０．２４、Ｚ＝０．７０）を結ぶ線上およびこ
の５点に囲まれる組成範囲内にある主成分組成物に副成
分として亜鉛・ニオブ酸鉛Ｐｂ（Ｚｎ＿１＿／＿３Ｎｂ
＿２＿／＿３）Ｏ＿３を１ｍｏｌ％ないし２０ｍｏｌ％
添加含有せしめることを特徴とする磁器組成物。[Claims] Magnesium lead tungstate [Pb(Mg_1_/
_2W_1_/_2)O_3], lead titanate [PbTi
O_3] and nickel lead niobate [Pb(Ni_1
A three-component composition consisting of [Pb(Mg_1_/_2W_1_/_2)O_
3]_x[PbTiO_3]_y[Pb(Ni_1_/
When expressed as _3Nb_2_/_3)O_3]_z (where X+Y+Z=1.00), in this three-component composition diagram, the next lower composition point (X=0.693, Y=0.297, Z=0. 01)(
X=0.495, Y=0.495, Z=0.01) (X
=0.195, Y=0.455, Z=0.35) (X=
0.10, Y=0.40, Z=0.50) (X=0.0
6, Y=0.24, Z=0.70) and within the composition range surrounded by these five points, zinc/lead niobate Pb (Zn_1_/_3Nb
_2_/_3) 1 mol% to 20 mol% of O_3
A porcelain composition characterized by containing an additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60255269A JPS62113755A (en) | 1985-11-13 | 1985-11-13 | Ceramic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60255269A JPS62113755A (en) | 1985-11-13 | 1985-11-13 | Ceramic composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62113755A true JPS62113755A (en) | 1987-05-25 |
| JPH0529621B2 JPH0529621B2 (en) | 1993-05-06 |
Family
ID=17276397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60255269A Granted JPS62113755A (en) | 1985-11-13 | 1985-11-13 | Ceramic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62113755A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5874569A (en) * | 1981-09-30 | 1983-05-06 | 日本電気株式会社 | Ceramic composition |
| JPS58161972A (en) * | 1982-03-17 | 1983-09-26 | 日本電気株式会社 | Ceramic composition |
-
1985
- 1985-11-13 JP JP60255269A patent/JPS62113755A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5874569A (en) * | 1981-09-30 | 1983-05-06 | 日本電気株式会社 | Ceramic composition |
| JPS58161972A (en) * | 1982-03-17 | 1983-09-26 | 日本電気株式会社 | Ceramic composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0529621B2 (en) | 1993-05-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |