JPS6231905A - Dielectric ceramic composition - Google Patents

Dielectric ceramic composition

Info

Publication number
JPS6231905A
JPS6231905A JP60170154A JP17015485A JPS6231905A JP S6231905 A JPS6231905 A JP S6231905A JP 60170154 A JP60170154 A JP 60170154A JP 17015485 A JP17015485 A JP 17015485A JP S6231905 A JPS6231905 A JP S6231905A
Authority
JP
Japan
Prior art keywords
weight
parts
ceramic composition
less
dielectric ceramic
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
Application number
JP60170154A
Other languages
Japanese (ja)
Other versions
JPH0687363B2 (en
Inventor
西岡 吾朗
行雄 坂部
今成 淳一
優 藤野
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP60170154A priority Critical patent/JPH0687363B2/en
Priority to US06/891,470 priority patent/US4753905A/en
Publication of JPS6231905A publication Critical patent/JPS6231905A/en
Publication of JPH0687363B2 publication Critical patent/JPH0687363B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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) この発明は、誘電体磁器組成物に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a dielectric ceramic composition.

(従来技術) 従来、高誘電率系磁器コンデンサ材料として、BaTi
O3を主体とし、これに、CaTiO3゜Ba5nO,
、CaZr0..5rTi03等を添加したものが使用
されてきた。これらの材料は、室温での誘電率が200
0〜15000と高い材料である。
(Prior art) Conventionally, BaTi has been used as a high dielectric constant ceramic capacitor material.
Mainly composed of O3, in addition to this, CaTiO3゜Ba5nO,
, CaZr0. .. Those to which 5rTi03 and the like have been added have been used. These materials have a dielectric constant of 200 at room temperature.
It is a material with a high value of 0 to 15,000.

(発明が解決しようとする問題点) 従来のこれらの組成系は、その焼結温度が1300〜1
400℃と高いという欠点を有している。
(Problems to be solved by the invention) These conventional composition systems have a sintering temperature of 1300 to 1
It has the disadvantage of being as high as 400°C.

そのために、焼成コストが高くつき、さらに、積層磁器
コンデンサを作成する場合においては、生の磁器シート
の上に電極を予め形成したものを、複数枚積み重ねてか
ら焼成されるので、この電極材料としては、1300℃
以上の高温においても、溶融したり酸化したりあるいは
誘電体と反応したりすることがない貴金属、たとえば白
金やパラジウムなどを用いなければならなかった。
For this reason, the firing cost is high, and furthermore, when making a laminated porcelain capacitor, electrodes are formed on raw porcelain sheets in advance, and multiple sheets are stacked and fired, so this electrode material cannot be used. is 1300℃
It was necessary to use noble metals such as platinum and palladium that do not melt, oxidize, or react with the dielectric even at these high temperatures.

以上の点を改良するために、本願発明者は、先に誘電体
磁器組成物として、p b (Mg1/+ Nb2/3
) Os −P b (Zn+7+ Nbzis ) 
Os  PbTio、系の組成物を提示した(特開昭5
7−27974号)。
In order to improve the above points, the inventors of the present application first prepared p b (Mg1/+ Nb2/3) as a dielectric ceramic composition.
) Os −P b (Zn+7+ Nbzis )
presented a composition of the OsPbTio system (Japanese Unexamined Patent Publication No.
No. 7-27974).

この組成物では、比誘電率10000以上、焼結温度1
030〜1150℃という特性を得ることができた。し
かし、さらに、誘電率において高い値を示す磁器組成物
の開発が望まれていた。
This composition has a dielectric constant of 10,000 or more and a sintering temperature of 1
It was possible to obtain characteristics of 030 to 1150°C. However, there has been a desire to develop a ceramic composition that exhibits a higher dielectric constant.

それゆえに、この発明の主たる目的は、誘電率の値が1
5000以上と高く、焼結温度が1150°C以下と低
く、かつ常温から85°Cの温度範囲において、体積抵
抗が19110cm以上と高い、誘電体磁器組成物を提
供することである。
Therefore, the main purpose of this invention is to
It is an object of the present invention to provide a dielectric ceramic composition having a high resistance value of 5000 cm or more, a low sintering temperature of 1150°C or less, and a high volume resistivity of 19110 cm or more in the temperature range from room temperature to 85°C.

(問題点を解決するための手段) この発明は、P b (Mg1/a Nb!/3 ) 
03−Pb(Zn1/3Nb2/3)03  PbTi
03(7)固溶体より成る磁器組成物において、 個々の酸化物組成比率(重量%)が、 Pb3O468,05〜69.60 Mg0     2.41〜4.00 ZnO0.08〜3.15 Nbz Os   24.01〜26.66Ti0□ 
   0.13〜2.59 であり、かつ、 (P b (Mg1/+ Nb2/3) 03 、  
P b (Zn1/3 Nbw7z )03.PbT1
0s )の配合比(重量%)が、A (89,0,1,
0,10,0)、B  (80,0,10,0,10゜
 O)  、C(59゜5、 40. 0. 0. 5
)  、D  (9B、  5. 1. 0゜0.5)
の各点を頂点とする多角形A、B、C。
(Means for solving the problem) This invention provides P b (Mg1/a Nb!/3)
03-Pb(Zn1/3Nb2/3)03 PbTi
03(7) In the ceramic composition consisting of a solid solution, the individual oxide composition ratios (wt%) are as follows: Pb3O468.05~69.60 Mg0 2.41~4.00 ZnO0.08~3.15 Nbz Os 24. 01~26.66Ti0□
0.13 to 2.59, and (P b (Mg1/+ Nb2/3) 03 ,
P b (Zn1/3 Nbw7z)03. PbT1
The blending ratio (wt%) of A (89,0,1,
0,10,0), B (80,0,10,0,10° O), C (59°5, 40.0.0.5
), D (9B, 5.1.0°0.5)
Polygons A, B, and C whose vertices are each point.

Dで囲まれる領域内より選ばれる主成分を100重量部
としたとき、副成分としてMgOを1. 0重量部以下
(0重量部を含まず)添加含有したことを特徴とする、
誘電体磁器組成物である。
When the main component selected from the area surrounded by D is 100 parts by weight, 1.0 parts of MgO is added as a subcomponent. characterized by containing 0 parts by weight or less (excluding 0 parts by weight);
It is a dielectric ceramic composition.

また、必要に応じ副成分としてさらに、マンガンをMn
O,に換算して0.5重量部以下(0重量部を含まず)
含有することも許される誘電体磁器組成物である。
In addition, if necessary, manganese may be added as a subcomponent.
0.5 parts by weight or less (excluding 0 parts by weight) in terms of O.
It is a dielectric ceramic composition that is also allowed to contain.

(発明の効果) この発明によれば、誘電率が15000以上の高い値を
示し、誘電正接が3%以下と小さく、室温および高温(
85℃)での比抵抗が、10IlΩcI11以上と高く
、焼結温度が1150℃と低い誘電体磁器組成物が得ら
れ、磁器コンデンサ、特に積層磁器コンデンサの小型化
、大容量化、コストダウン、省エネ化、および生産の安
定化を図ることができる。
(Effects of the Invention) According to the present invention, the dielectric constant exhibits a high value of 15,000 or more, the dielectric loss tangent is as small as 3% or less, and the dielectric constant is as low as 3% or less.
A dielectric ceramic composition with a high specific resistance of 10IlΩcI11 or more at 85°C) and a low sintering temperature of 1150°C can be obtained, making ceramic capacitors, especially multilayer ceramic capacitors smaller, larger in capacity, cost reduction, and energy saving. This makes it possible to improve production efficiency and stabilize production.

この発明の上述の目的、その他の目的、特徴および利点
は、図面を参照して行う以下の実施例の詳細な説明から
一層明らかとなろう。
The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(実施例) 出発原料として、工業用のPb3O4、MgO。(Example) Industrial grade Pb3O4, MgO as starting materials.

Nbz O,、Tie、、ZnO,MnCO5を用意し
、これらを秤量して、予めP b(M g I/s N
bzzs ) Os 、  P b (Zn173 N
bz73 ) 03 。
Prepare Nbz O, Tie, ZnO, and MnCO5, weigh them, and prepare P b (M g I/s N
bzzs ) Os , P b (Zn173 N
bz73) 03.

PbTiOs、  となるように各々配合した。PbTiOs, respectively, were blended so as to become PbTiOs.

次いで、PbTi0+を950℃で、その他の組成物(
P b (Mg1/s Nbzz+ ) O++ 、 
P b (Znlis Nbzis ) 03)を85
0℃で、それぞれ個々に2時間仮焼し、所定の化合物粉
体を得た。
Next, PbTi0+ was heated at 950°C and other compositions (
P b (Mg1/s Nbzz+) O++,
P b (Znlis Nbzis) 03) 85
Each was calcined individually for 2 hours at 0°C to obtain a predetermined compound powder.

次に、このようにして得られた主成分たる化合物粉体と
副成分たるMgOおよびMnCO5を表に示す各所望の
配合比となるように配合し、それに結合剤として酢酸ビ
ニル系バインダを5重量部加え、ボールミルによって、
lO〜20時間湿式混合した。その後、これによって得
られた混合物を蒸発乾燥し、整粒により粉末状にして、
これを1ton/cJの圧力で直径12tm、厚さ1.
5龍の円板に成形した。この円板を、鉛雰囲気を有する
電気炉を用いて、表の「焼成温度」の欄に記載した各温
度で、各々1時間焼成した。得られた磁器円板の両面に
電極を形成すべくAgペーストを800℃で焼き付け、
測定試料1〜25を作成した。
Next, the compound powder as the main component obtained in this manner and MgO and MnCO5 as subcomponents were blended in the desired mixing ratio shown in the table, and 5 weights of vinyl acetate binder was added as a binder. By adding parts and ball milling,
Wet mixed for ~20 hours. Thereafter, the resulting mixture was evaporated to dryness, sized to form a powder,
This was applied at a pressure of 1 ton/cJ to a diameter of 12 tm and a thickness of 1.
It was molded into a five-dragon disc. This disk was fired for 1 hour at each temperature listed in the "Firing Temperature" column of the table using an electric furnace having a lead atmosphere. Ag paste was baked at 800°C to form electrodes on both sides of the obtained porcelain disk.
Measurement samples 1 to 25 were created.

各試料について、誘電率(ε)、誘電正接(tanδ)
および比抵抗(ρ)を測定し、それぞれの値を表に示し
た。なお、誘電率および誘電正接は、温度25℃、周波
数1 kHz、測定電圧1■r、m、s、の条件下で測
定したものであり、比抵抗は、温度25℃および85℃
で、D、C,500V/酊を印加し2分後に測定したも
のである。
For each sample, dielectric constant (ε), dielectric loss tangent (tanδ)
and specific resistance (ρ) were measured, and the respective values are shown in the table. Note that the dielectric constant and dielectric loss tangent were measured under the conditions of a temperature of 25°C, a frequency of 1 kHz, and a measurement voltage of 1■r, m, and s, and specific resistance was measured at a temperature of 25°C and 85°C.
The measurement was taken 2 minutes after applying D, C, and 500 V/drudge.

表中*を付した試料は、この発明の範囲以外のものであ
り、残りの試料は、この発明の範囲内のものである。す
なわち、表中、試料番号1,2゜5、 9. 11. 
13. 15. 16. 21および25は、発明の範
囲外のもので、試料番号3,4゜6.7.8,10.1
2.14.17.18,19.20,22.23および
24は、発明の範囲内のものである。
Samples marked with * in the table are outside the scope of this invention, and the remaining samples are within the scope of this invention. That is, in the table, sample numbers 1, 2゜5, 9. 11.
13. 15. 16. 21 and 25 are outside the scope of the invention, sample numbers 3, 4° 6.7.8, 10.1
2.14.17.18, 19.20, 22.23 and 24 are within the scope of the invention.

表に示した各実験例の結果に基づいて、図面に主成分の
3成分組成図(3元図)を示した。なお、この図面にお
いて丸印を付した数字は各試料番号を表す。
Based on the results of each experimental example shown in the table, a three-component composition diagram (ternary diagram) of the main components is shown in the drawing. In addition, the numbers marked with circles in this drawing represent each sample number.

この図面に、この発明の範囲内にある主成分の配合比を
示す領域を、頂点A、B、CおよびDを有する四角形で
記入した。すなわち、上述の3成分系の磁器組成物にお
ける配合比を、XPb(M   ’g1/3Nb2/3
 )Os  ’YPb (Zn1/a Nbt73)0
3  ZPbTiC)+  (ただし、x、y、zは各
成分の重量%を表し、X+Y+Z=100゜0)と表し
たとき、この発明の主成分の範囲(X。
In this drawing, a region indicating the blending ratio of the main components within the scope of the present invention is drawn as a rectangle having vertices A, B, C, and D. That is, the blending ratio in the above-mentioned three-component ceramic composition is
) Os 'YPb (Zn1/a Nbt73) 0
3 ZPbTiC)+ (However, x, y, z represent the weight% of each component, and when expressed as X+Y+Z=100°0), the range of the main component of this invention (X.

Y、Z)は、A (89,0,1,0,10,0)、B
 (80,0,10,0,10,0) 、C(59゜5
.40.0.0.5) 、D (98,5,1,0゜0
.5)の4点で囲まれる領域内の配合比に相当し、さら
に、この主成分を100重量部としたとき、副成分とし
てMgOを1.0重量部以下含有したことを特徴とする
磁器組成物である。すなわち、前述したように本発明者
らは、先にPb(Mgriz Nbzz3) Os 、
  P b (Zn+7a Nb!/3)()+ 、P
bTiO3からなる磁器組成物を提案したが、この発明
は、主成分をこの組成内で、さらに副成分としてMgO
を1.0重量部以下含有せしめることにより、誘電率の
著しい向上と、より低温での焼結を可能ならしめたもの
である。また、副成分としてさらにマンガンをM n 
O,に換算して0.5重量部以下含有させることにより
、比抵抗を大きくすることができる。
Y, Z) are A (89,0,1,0,10,0),B
(80,0,10,0,10,0),C(59゜5
.. 40.0.0.5), D (98,5,1,0゜0
.. A porcelain composition corresponding to the blending ratio within the area surrounded by the four points in 5), and further containing 1.0 parts by weight or less of MgO as a subcomponent when the main component is 100 parts by weight. It is a thing. That is, as mentioned above, the present inventors first prepared Pb(Mgriz Nbzz3) Os,
P b (Zn+7a Nb!/3)()+ , P
Although a porcelain composition consisting of bTiO3 has been proposed, this invention uses MgO as a main component within this composition and as a subcomponent.
By containing 1.0 parts by weight or less, the dielectric constant can be significantly improved and sintering can be performed at a lower temperature. In addition, manganese is added as a subcomponent.
By containing 0.5 parts by weight or less in terms of O, the specific resistance can be increased.

以下に、表および図に従い、この発明に係る誘電体磁器
組成物の組成範囲限定の理由を述べる。
The reasons for limiting the composition range of the dielectric ceramic composition according to the present invention will be described below with reference to the tables and figures.

試料番号1.2のように、P b (Zn1/s Nb
、、、)0.が1.0wt%以下では、焼結温度が11
50℃以上と高く、誘電率も15000以上のものが得
られない。また、試料番号5のように、PbTiOsが
10.0wt%以上では、焼結温度が1150℃以上と
高く、誘電率も15000に満たず、さらにまた、ta
nδも3.0%を超え、好ましくない。
As in sample number 1.2, P b (Zn1/s Nb
,,,)0. is 1.0 wt% or less, the sintering temperature is 11
The temperature is as high as 50° C. or higher, and a dielectric constant of 15,000 or higher cannot be obtained. In addition, as in sample number 5, when PbTiOs is 10.0 wt% or more, the sintering temperature is as high as 1150°C or more, the dielectric constant is less than 15000, and the ta
nδ also exceeds 3.0%, which is not preferable.

さらに、また試料番号1.9.11のように、PbTi
O3が0,5wt%以下では、誘電率が15000以下
となり、好ましくない。
Furthermore, as in sample number 1.9.11, PbTi
If O3 is less than 0.5 wt%, the dielectric constant will be less than 15,000, which is not preferable.

さらに、また試料番号13.15のように、3成分図に
おいてB−C線より右上に位置する場合、誘電率が著し
く低くなる。
Furthermore, when the sample is located above and to the right of the B-C line in the ternary component diagram, as in sample number 13.15, the dielectric constant becomes extremely low.

さらに、MgOを1.0wt%以上添加した試料21で
は、誘電率が15000以下に低下し、かつ焼結温度が
1150℃以上となり、好ましくない。
Furthermore, in sample 21 in which 1.0 wt% or more of MgO was added, the dielectric constant decreased to 15,000 or less and the sintering temperature became 1,150° C. or higher, which is not preferable.

さらに、またM n O、を0,5wt%以上添加した
試料25では、高温での比抵抗が1o11ΩcI11以
下となり、好ましくない。
Furthermore, in sample 25 in which 0.5 wt% or more of MnO was added, the resistivity at high temperature was less than 1011ΩcI11, which is not preferable.

【図面の簡単な説明】[Brief explanation of drawings]

図面は、この発明の組成物のうち主成分の配合比を示す
3成分組成図である。 手続ネ甫正書印発) 昭和61年06月09日 特許庁長官 宇 賀 道 部 殿 2、発明の名称 誘電体磁器組成物 3、補正をする者 事件との関係   特許出願人 住 所 京都府長岡京市天神二丁目26番10号名 称
  (623)株式会社 材用製作所代表者  村 1
) 昭 4、代 理 人 e540 !!大阪(06) 764
−5443 (代)住 所 大阪市東区谷町5丁目30
番地7、補正の内容 明細書の発明の詳細な説明中の表−1を別紙の通り訂正
する。 以上 手続補正書 1.事件の表示 昭和60年 特許願 第170154号2、発明の名称 誘電体磁器組成物 3、補正をする者 事件との関係    特許出願人 住 所 京都府長岡京市天神二丁目26番10号名 称
、 (623)株式会社 村田製作所代表者  村 1
) 昭 4、代 理 人 ■540宣大阪″(06) 764−
5443 (代)住 所 大阪市東区谷町5丁目30番
地昭和61年08月05日(発送日) ヨニ匁与上甫−r彊止 を白春) 7、補正の内容 別紙のとおり 以  」二 昭和61年06月09日 特許庁長官 宇 賀 道 部 殿 1、事件の表示 昭和60年 特許願 第170154号2、発明の名称 誘電体磁器組成物 3、補正をする者 事件との関係    特許出願人 住 所 京都府長岡京市天神二丁目26番10号名 称
  (623)株式会社 村田製作所代表者  村 1
) 昭 4、代 理 人 ◎540意大阪(06) 764−5
443 (代)住 所 大阪市東区谷町5丁目30番地
自発補正 6、補正の対象
The drawing is a three-component composition diagram showing the blending ratio of the main components of the composition of the present invention. June 9, 1985 Michibe Uga, Commissioner of the Patent Office 2. Name of the invention: Dielectric ceramic composition 3. Relationship with the amended person's case. Patent applicant's address: Kyoto Prefecture. 2-26-10 Tenjin, Nagaokakyo City Name (623) Material Manufacturing Co., Ltd. Representative Village 1
) Agent e540 in Showa 4! ! Osaka (06) 764
-5443 Address 5-30 Tanimachi, Higashi-ku, Osaka
Address 7, Contents of Amendment Table 1 in the detailed description of the invention in the specification is corrected as shown in the attached sheet. Above procedural amendment 1. Indication of the case 1985 Patent Application No. 170154 2, Name of the invention Dielectric ceramic composition 3, Person making the amendment Relationship to the case Patent applicant address 2-26-10 Tenjin, Nagaokakyo City, Kyoto Name, (623) Murata Manufacturing Co., Ltd. Representative Mura 1
) 4th year of Showa, Agent ■540 Sen Osaka'' (06) 764-
5443 Address: 5-30 Tanimachi, Higashi-ku, Osaka City August 5, 1986 (Date of shipment) 7. Contents of the amendments as shown in the attached sheet 2 Showa June 9, 1961 Director General of the Patent Office Michibe Uga1, Indication of the case 1985 Patent Application No. 1701542, Name of the invention Dielectric ceramic composition 3, Person making the amendment Relationship with the case Patent applicant Address 2-26-10 Tenjin, Nagaokakyo City, Kyoto Name (623) Murata Manufacturing Co., Ltd. Representative Village 1
) 1925, Agent ◎540 Osaka (06) 764-5
443 Address 5-30 Tanimachi, Higashi-ku, Osaka Voluntary correction 6, subject of correction

Claims (1)

【特許請求の範囲】 1 Pb(Mg_1_/_3Nb_2_/_3)O_3
−Pb(Zn_1_/_3Nb_2_/_3)O_3−
PbTiO_3の固溶体より成る磁器組成物において、 個々の酸化物組成比率(重量%)が、 Pb_3O_468.05〜69.60 MgO2.41〜4.00 ZnO0.08〜3.15 Nb_2O_524.01〜26.66 TiO_20.13〜2.59 であり、かつ、 〔Pb(Mg_1_/_3Nb_2_/_3)O_3、
Pb(Zn_1_/_3Nb_2_/_3)O_3、P
bTiO_3〕の配合比(重量%)が、A(89.0、
1.0、10.0)、B(80.0、10.0、10.
0)、C(59.5、40.0、0.5)、D(98.
5、1.0、0.5)の各点を頂点とする多角形A、B
、C、Dで囲まれる領域内より選ばれる主成分を100
重量部としたとき、副成分としてMgOを1.0重量部
以下(0重量部を含まず)添加含有したことを特徴とす
る、誘電体磁器組成物。 2 前記3成分系〔Pb(Mg_1_/_3Nb_2_
/_3)O_3−Pb(Zn_1_/_3Nb_2_/
_3)O_3−PbTiO_3〕から成る主成分100
重量部に対し、副成分として、MgOを1.0重量部以
下(0重量部を含まず)含有し、かつマンガンをMnO
_2に換算して0.5重量部以下(0重量部を含まず)
含有したことを特徴とする、特許請求の範囲第1項記載
の誘電体磁器組成物。
[Claims] 1 Pb(Mg_1_/_3Nb_2_/_3)O_3
-Pb(Zn_1_/_3Nb_2_/_3)O_3-
In a ceramic composition made of a solid solution of PbTiO_3, the individual oxide composition ratios (wt%) are: Pb_3O_468.05-69.60 MgO2.41-4.00 ZnO0.08-3.15 Nb_2O_524.01-26.66 TiO_20.13 to 2.59, and [Pb(Mg_1_/_3Nb_2_/_3)O_3,
Pb(Zn_1_/_3Nb_2_/_3)O_3, P
The blending ratio (wt%) of bTiO_3] is A (89.0,
1.0, 10.0), B(80.0, 10.0, 10.
0), C (59.5, 40.0, 0.5), D (98.
Polygons A and B whose vertices are the points 5, 1.0, 0.5)
The principal components selected from the area surrounded by , C, and D are 100
A dielectric ceramic composition characterized in that it contains 1.0 parts by weight or less (excluding 0 parts by weight) of MgO as a subcomponent when expressed as parts by weight. 2 The three-component system [Pb(Mg_1_/_3Nb_2_
/_3)O_3-Pb(Zn_1_/_3Nb_2_/
_3) Main component 100 consisting of O_3-PbTiO_3]
Contains 1.0 parts by weight or less (excluding 0 parts by weight) of MgO as a subcomponent based on part by weight, and contains manganese as an auxiliary component.
0.5 parts by weight or less (not including 0 parts by weight) in terms of _2
The dielectric ceramic composition according to claim 1, characterized in that it contains:
JP60170154A 1985-07-31 1985-07-31 Dielectric porcelain composition Expired - Lifetime JPH0687363B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP60170154A JPH0687363B2 (en) 1985-07-31 1985-07-31 Dielectric porcelain composition
US06/891,470 US4753905A (en) 1985-07-31 1986-07-29 Dielectric ceramic composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60170154A JPH0687363B2 (en) 1985-07-31 1985-07-31 Dielectric porcelain composition

Publications (2)

Publication Number Publication Date
JPS6231905A true JPS6231905A (en) 1987-02-10
JPH0687363B2 JPH0687363B2 (en) 1994-11-02

Family

ID=15899684

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60170154A Expired - Lifetime JPH0687363B2 (en) 1985-07-31 1985-07-31 Dielectric porcelain composition

Country Status (1)

Country Link
JP (1) JPH0687363B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094987A (en) * 1989-08-17 1992-03-10 Matsushita Electric Industrial Co., Ltd. Dielectric ceramic composition and multi-layer capacitor
JP2008036583A (en) * 2006-08-09 2008-02-21 Sumitomo Heavy Industries Environment Co Ltd Flocculater

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727974A (en) * 1980-07-24 1982-02-15 Murata Manufacturing Co Dielectric ceramic composition

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5727974A (en) * 1980-07-24 1982-02-15 Murata Manufacturing Co Dielectric ceramic composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094987A (en) * 1989-08-17 1992-03-10 Matsushita Electric Industrial Co., Ltd. Dielectric ceramic composition and multi-layer capacitor
JP2008036583A (en) * 2006-08-09 2008-02-21 Sumitomo Heavy Industries Environment Co Ltd Flocculater

Also Published As

Publication number Publication date
JPH0687363B2 (en) 1994-11-02

Similar Documents

Publication Publication Date Title
JPH0355002B2 (en)
JPH0552602B2 (en)
JPH02228018A (en) Porcelain capacitor and manufacture thereof
JP3143922B2 (en) Non-reducing dielectric ceramic composition
JPS6231905A (en) Dielectric ceramic composition
JPH0544764B2 (en)
JPH0734327B2 (en) Non-reducing dielectric ceramic composition
JPS58156576A (en) Dielectric body based on lead titanate, manufacture and multi-layer capacitor containing same
JP2669184B2 (en) Non-reducing dielectric porcelain composition
CN1085638C (en) Dielectric ceramic composition
JP3158553B2 (en) Non-reducing dielectric ceramic composition
JPH0828127B2 (en) Dielectric ceramic composition for temperature compensation
JPH04188504A (en) Dielectric porcelain composition
JP3134430B2 (en) Non-reducing dielectric ceramic composition
JPH02228014A (en) Porcelain capacitor and manufacture thereof
JPS6231907A (en) Dielectric ceramic composition
JP3263990B2 (en) Dielectric porcelain composition
JP3389947B2 (en) Dielectric ceramic composition and thick film capacitor using the same
JPS6231908A (en) Dielectric ceramic composition
JP3158568B2 (en) Non-reducing dielectric ceramic composition
JPS6231906A (en) Dielectric ceramic composition
JP3158569B2 (en) Non-reducing dielectric ceramic composition
JP2669185B2 (en) Non-reducing dielectric porcelain composition
JPS6237804A (en) Dielectric ceramic composition
JP3158552B2 (en) Non-reducing dielectric ceramic composition

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term