JPS5971204A - Barium titanate high dielectric porcelain composition - Google Patents
Barium titanate high dielectric porcelain compositionInfo
- Publication number
- JPS5971204A JPS5971204A JP57180221A JP18022182A JPS5971204A JP S5971204 A JPS5971204 A JP S5971204A JP 57180221 A JP57180221 A JP 57180221A JP 18022182 A JP18022182 A JP 18022182A JP S5971204 A JPS5971204 A JP S5971204A
- Authority
- JP
- Japan
- Prior art keywords
- barium titanate
- high dielectric
- barium
- titanate
- porcelain composition
- 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.)
- Pending
Links
Landscapes
- Compositions Of Oxide Ceramics (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
本発明は民生用捷たは産業用エレクトロニクス機器に使
用される積層セラミックコンデンサに主に用いられるチ
タン・酸バリウム系高誘電率磁器組成物に関するもので
ある。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a titanium/barium oxide-based high dielectric constant ceramic composition that is mainly used in multilayer ceramic capacitors used in consumer electronics or industrial electronics equipment. be.
従来例の構成とその問題点
従来より積層セラミックコンデンサ用高誘電率磁器組成
物として、チタン酸バリウムを主体とするものが数多く
知られている。チタン酸バリウムは周知のように強誘電
性を有する特異な物質で１２０℃付近において相転移点
（キューリ一点という）を持ち、このキューリ一点にお
いて誘電率が６０００〜７０００と極めて高い値を示す
。しかし、このチタン酸バリウムだけでは常温で高誘電
率にはなり得ない。そこで、チタン酸バリウムのキュー
リ一点を常温付近に移動させることにより、常温で適当
な静電容量、温度特性を有するコンデンサを実用化する
ことは従来から行われている。ここで、キューリ一点を
移動させる添加剤はシフターと呼ばれ、Ｂａ５ｎＯｓ
、 ＣａＺｒＯｓ 、 ＣｅＯ２゜Ｔａ ２０５等が一
般的に知られ、これらシフターを利用したチタン酸バリ
ウムの高誘電率組成物が積層セラミックコンデンサに用
いられている。しかし、最近チップ部品をプリント基板
に自動装着機にて取付ける組立方法がとられているが、
装着機のピンにより基板に圧着される際にチップ部品の
機械的強度が弱い時には素子が割れるという大きな問３
ページ
順となっている。そして、従来のチタン酸バリウム系高
誘電率磁器組成物を用いた積層セラミックコンデンサは
曲げ強度が弱く、を記の問題が大きな障害となっていた
。Conventional Structures and Problems There have been many known high-permittivity ceramic compositions for multilayer ceramic capacitors that mainly contain barium titanate. As is well known, barium titanate is a unique ferroelectric substance that has a phase transition point (referred to as the Curie point) at around 120° C., and exhibits an extremely high dielectric constant of 6,000 to 7,000 at this Curie point. However, this barium titanate alone cannot achieve a high dielectric constant at room temperature. Therefore, it has been conventionally possible to commercialize a capacitor having appropriate capacitance and temperature characteristics at room temperature by moving the Curie point of barium titanate to around room temperature. Here, the additive that moves one cucumber point is called a shifter, and Ba5nOs
, CaZrOs, CeO2°Ta205, etc. are generally known, and high dielectric constant compositions of barium titanate using these shifters are used in multilayer ceramic capacitors. However, recently an assembly method has been adopted in which chip components are attached to printed circuit boards using automatic mounting machines.
Major problem 3: If the mechanical strength of the chip component is weak when it is crimped onto the board by the pins of the mounting machine, the chip will crack.
The pages are in order. Conventional multilayer ceramic capacitors using barium titanate-based high dielectric constant ceramic compositions have low bending strength, and the problems described above have been a major obstacle.
発明の目的
本発明はこのような点に鑑みなされたもので、機械的強
度の向上を図ったチタン酸バリウム系高ンサを製造しよ
うとするものである。OBJECTS OF THE INVENTION The present invention has been made in view of the above points, and an object thereof is to manufacture a barium titanate-based high strength sensor with improved mechanical strength.
発明の構成
本発明のチタン酸バリウム系高誘電率磁器組成物は、チ
タン酸バリウム（ＢａＴｉＯｓ ）と、１０００℃〜１
４００℃で反応させたり／タル酸バリウム（Ｂａ ５Ｔ
ａ４０ ＋ｓ ）及びチタン酸ネオジウム（Ｎｄ２Ｔｉ
２０７）とを主成分に用いたものであり、良好な機械的
強度を得ることができ、積層セラミックコンデ／すに用
いて有用なものである。Structure of the Invention The barium titanate-based high dielectric constant ceramic composition of the present invention comprises barium titanate (BaTiOs) and
React at 400℃/Barium tarnate (Ba 5T
a40 +s ) and neodymium titanate (Nd2Ti
207) as the main component, good mechanical strength can be obtained, and it is useful for use in laminated ceramic containers/containers.
実施例の説明
捷ず、五酸化クンタル（Ｔａ２０ｓ） ４４・１部と炭
酸バリウム（Ｂａｄ） ３Ｂ−３部を湿式混合法でメツ
ブー玉石全使用して１７時間混合し、乾燥後、アルミナ
ルツボに入れ、１２００℃で２時間焼成してタンタル酸
バリウム（Ｂａ５Ｔａ４０＋５） ｆ製造した。Description of Examples 44.1 parts of quintal pentoxide (Ta20s) and 3B-3 parts of barium carbonate (Bad) were mixed for 17 hours using the wet mixing method using all metbu boulders, and after drying, they were placed in an alumina crucible. , and calcined at 1200° C. for 2 hours to produce barium tantalate (Ba5Ta40+5) f.
さらに並行して酸化ネオジウム（Ｎｄ２０ｓ） ３３−
６部、酸化チタン（Ｔｉ０２） ７９・９部を上記混合
法と同様に行い１２００℃で２時間焼成してチタン酸ネ
オジウム（Ｎｄ２ＴｉｚＯ７） ｆ製造した。次にチタ
ン酸バリウム（ＢａＴｉＯｘ） １００部に対して上記
のタンタル酸バリウム（Ｂａ５Ｔａ４０＋ｓ） ４部、
チタン酸ネオジウム（Ｎｄ２Ｔｉ２０７） ２部、チタ
ン酸カルシウム（ＣａＴｉ０３） ４部、二酸化マンガ
ン（ＭｎＯ２）０．３部を湿式混合法でメノー玉石を使
用して１７時間混合し、乾燥させて積層セラミックコン
デンサ用高誘電率磁器組成物を製造した。この組成物１
００部に対してバイノブ−としてポリ３ｏ部を湿式混練
し、スラリー状にし、濾過、脱泡後、ドクターブレード
法にて１００μｍのシー７ページ
らに電気的特性にも優れている。なお、ここでタンクル
酸バリウム（Ｂａ５Ｔａ４０＋５）及びテクノ酸ネオジ
ウム（Ｎｄ２Ｔｉ２０７）の反応湯度を１０００°Ｃ〜
１４００°Ｃと限定したのは、１０００℃未満では積層
セラミックコンデンサの磁器のボアが多くなり、抗折強
度の向上が見られないためである。Furthermore, in parallel, neodymium oxide (Nd20s) 33-
6 parts of titanium oxide (Ti02) and 79.9 parts of titanium oxide (Ti02) were mixed in the same manner as described above and fired at 1200° C. for 2 hours to produce neodymium titanate (Nd2TizO7) f. Next, 4 parts of the above barium tantalate (Ba5Ta40+s) per 100 parts of barium titanate (BaTiOx),
2 parts of neodymium titanate (Nd2Ti207), 4 parts of calcium titanate (CaTi03), and 0.3 parts of manganese dioxide (MnO2) were mixed using a wet mixing method using agate stones for 17 hours, and dried to form a monolithic ceramic capacitor. A high dielectric constant ceramic composition was produced. This composition 1
It has excellent electrical properties by wet-kneading 30 parts of poly as Binobu to 0 parts, making it into a slurry, filtering and defoaming, and using a doctor blade method to obtain a sheet of 100 μm. In addition, here, the reaction temperature of barium tankurate (Ba5Ta40+5) and neodymium technoate (Nd2Ti207) was set at 1000°C ~
The temperature was limited to 1400°C because at temperatures below 1000°C, the number of bores in the ceramic of the multilayer ceramic capacitor increases, and no improvement in bending strength is observed.
寸た、１４００℃をこえると反応が進みすぎて化合物が
固化し、粉砕後も粒径が粗く、均一な粒径を持った化合
物が得られないため、積層セラミックの磁器の微細構造
が不均一になり、抗折強度及び電気的特性が劣化し効果
がないためである。On the other hand, if the temperature exceeds 1400℃, the reaction will proceed too much and the compound will solidify, and even after pulverization, the particle size will be coarse and it will not be possible to obtain a compound with a uniform particle size, resulting in the fine structure of the laminated ceramic porcelain being non-uniform. This is because the bending strength and electrical properties deteriorate and there is no effect.
図は抗折強度測定装置を示す図である。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名ｒｎ
ｍ
１３−The figure shows a bending strength measuring device. Name of agent: Patent attorney Toshio Nakao and 1 other person rn
m 13-
Claims (1)
ＢＩＬＯ） 、！： 五酸化タンタル（Ｔａ２０５）を
１０ｏｏ℃〜１４ｏｏ℃で反応させた化合物のタンタル
酸ノ（リウム（ＢＩＬ５ＴＩＬ４０１５）と、酸化チタ
ｙ （ＴｉＯ２）と酸化ネオジウム（Ｎｄ２０３）を上
記同様に１０００℃〜１４００℃で反応させた化合物の
チタン酸ネオジウム（Ｎｄ２Ｔｉ２０７）とを主成分に
用いたチタン酸バリウム系高誘電率磁器組成物。Barium titanate (BaTiO3) and barium carbonate (
BILO),! : Tantalumium tantalate (BIL5TIL4015), a compound obtained by reacting tantalum pentoxide (Ta205) at 100°C to 140°C, titanium oxide (TiO2) and neodymium oxide (Nd203) at 1000°C to 1400°C in the same manner as above. A barium titanate-based high dielectric constant ceramic composition using neodymium titanate (Nd2Ti207), a compound reacted with, as a main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57180221A JPS5971204A (en) | 1982-10-13 | 1982-10-13 | Barium titanate high dielectric porcelain composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57180221A JPS5971204A (en) | 1982-10-13 | 1982-10-13 | Barium titanate high dielectric porcelain composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5971204A true JPS5971204A (en) | 1984-04-21 |
Family
ID=16079513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57180221A Pending JPS5971204A (en) | 1982-10-13 | 1982-10-13 | Barium titanate high dielectric porcelain composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5971204A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301516C (en) * | 2003-07-16 | 2007-02-21 | 郑州大学 | Preparation method of ceramic grain boundary layer condensor |
| CN105148808A (en) * | 2015-08-20 | 2015-12-16 | 江苏大学 | Method for preparing 3D (three-dimensional) floriated Ba5Ta4O15 microspheres |
-
1982
- 1982-10-13 JP JP57180221A patent/JPS5971204A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301516C (en) * | 2003-07-16 | 2007-02-21 | 郑州大学 | Preparation method of ceramic grain boundary layer condensor |
| CN105148808A (en) * | 2015-08-20 | 2015-12-16 | 江苏大学 | Method for preparing 3D (three-dimensional) floriated Ba5Ta4O15 microspheres |
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