JPH053425B2 - - Google Patents
Info
- Publication number
- JPH053425B2 JPH053425B2 JP61089321A JP8932186A JPH053425B2 JP H053425 B2 JPH053425 B2 JP H053425B2 JP 61089321 A JP61089321 A JP 61089321A JP 8932186 A JP8932186 A JP 8932186A JP H053425 B2 JPH053425 B2 JP H053425B2
- Authority
- JP
- Japan
- Prior art keywords
- composition
- present
- pbtio
- weight
- lead
- 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 - Lifetime
Links
- 239000000203 mixture Substances 0.000 claims description 21
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 229910052573 porcelain Inorganic materials 0.000 claims description 6
- HEPLMSKRHVKCAQ-UHFFFAOYSA-N lead nickel Chemical compound [Ni].[Pb] HEPLMSKRHVKCAQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 claims 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 claims 1
- 239000000919 ceramic Substances 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- 229910000480 nickel oxide Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229910003781 PbTiO3 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
- Inorganic Insulating Materials (AREA)
Description
（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。
（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（BaTiO3）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りである。しかし
ながら、チタン酸バリウム（BaTiO3）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、ニツケルなどを主成分と
する安価な金属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。
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。この要求に答えるために本
発明者等は特開昭58−193806号公報でPb（Ni1／
3Nb2／３）O3−Pb（Ni1／2W1／２）O3−
PbTiO3からなる三成分磁器組成物を提案した。
この特開昭58−193806号公報では誘電率が1570〜
15540、誘電損失が0.1〜4.9％、20℃における比
抵抗が1.2×1011〜2.3×1013Ω・cm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に高めること
が望まれていた。
（発明の目的）
本発明の目的は1050℃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。
（発明の構成）
本発明の磁器組成物は、ニツケル・ニオブ酸鉛
［Pb（Ni1／3Nb2／３）O3］、ニツケル・タング
ステン酸鉛［Pb（Ni1／2W1／２）O3］とチタン
酸鉛［PbTiO3］からなる３成分磁器組成物を
［Pb（Ni1／3Nb2／３）O3］x［Pb（Ni1／2W1／
２）O3］y［PbTiO3］zと表現したとき（ただしｘ
＋ｙ＋ｚ＝1.00）、配合比ｘ、ｙ、ｚがこの三成
分組成図において、以下の組成点
Ａ：（ｘ＝0.89 ｙ＝0.01 ｚ＝0.10）
Ｂ：（ｘ＝0.00 ｙ＝0.60 ｚ＝0.40）
Ｃ：（ｘ＝0.00 ｙ＝0.30 ｚ＝0.70）
Ｄ：（ｘ＝0.50 ｙ＝0.05 ｚ＝0.45）
を結ぶ線上（ただしＢとＣを結ぶ線上は先頭の特
願昭57−167820（特開昭59−57953）により除く）
およびこの線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酸化亜鉛（ZnO）を0.05重量
％ないし1.0重量％添加含有せしめることを特徴
とする。
（実施例）
以下本発明を実施例にて詳細に説明する。出発
原料として純度99.9％以上の酸化鉛（PbO）、酸
化ニツケル（NiO）、酸化ニオブ（Nb2O5）、酸化
タングステン（WO3）、酸化チタン（TiO2）およ
び酸化亜鉛（ZnO）を使用し、所定の配合比に秤
量する。次にボールミル中で湿式混合した後750
℃〜825℃で予焼した。その後ボールミルで粉砕
し、別、乾燥後、有機バインダーを入れ整粒
し、プレスした。直径16mm、厚さ約２mmの円板を
４枚作成した。次に空気中900〜1050℃で１時間
焼結した。焼結した円板の上下面に銀電極を600
℃で焼付け、デジタルLCRメーターで周波数1K
Hz、電圧1Vrmsで容量と誘電損失（tan〓）を測定
し、誘電率を算出した。次に超絶縁抵抗計で50V
の電圧を１分間印加して絶縁抵抗を測定し、比抵
抗を算出した。４個の試料の平均値を代表値とし
た。このようにして得られた配合比ｘ、ｙ、ｚと
特性の関係を第１表に示す。
(Industrial Application Field) The present invention relates to a ceramic composition, particularly a ceramic composition that can be sintered at a low temperature of 1050° C. or lower, has a high dielectric constant, and has a high insulation resistance at room temperature. (Prior Art) It is well known that ceramics containing barium titanate (BaTiO 3 ) as a main component have been widely put into practical use as dielectric ceramic compositions. However, those whose main component is barium titanate (BaTiO 3 ) have a sintering temperature of usually 1300 to 1400°C. Therefore, when using this material in a multilayer capacitor, a material that can withstand this sintering temperature must be used for the internal electrodes, such as an expensive noble metal such as platinum or palladium, which has the disadvantage of high manufacturing costs. be. In order to make multilayer capacitors cheaply, it is necessary to use inexpensive metals mainly composed of silver, nickel, etc., which can be used for the internal electrodes.
Porcelain that can be sintered at as low a temperature as possible, especially below 1050°C, is needed. Furthermore, the electrical properties of the ceramic composition are basically required to have a high dielectric constant, low dielectric loss, and high insulation resistance. In order to meet this demand, the inventors of the present invention have published Pb(Ni1/
3Nb2/3)O 3 −Pb(Ni1/2W1/2)O 3 −
A ternary porcelain composition consisting of PbTiO3 was proposed.
In this Japanese Patent Application Laid-open No. 58-193806, the dielectric constant is 1570~
15540, a composition exhibiting excellent properties such as a dielectric loss of 0.1 to 4.9% and a specific resistance at 20° C. of 1.2×10 11 to 2.3×10 13 Ω·cm is disclosed. However, it has been desired to further increase the dielectric constant while maintaining other properties. (Object of the invention) The object of the present invention is to enable sintering at a low temperature of 1050°C or lower,
An object of the present invention is to provide a ceramic composition for a multilayer capacitor that has a high dielectric constant, low dielectric loss, and high specific resistance. (Structure of the Invention) The porcelain composition of the present invention includes lead nickel niobate [Pb(Ni1/3Nb2/3)O 3 ], lead nickel tungstate [Pb(Ni1/2W1/2)O 3 ] and titanium. A three-component porcelain composition consisting of lead acid [PbTiO 3 ] was prepared as [Pb(Ni1/3Nb2/3)O 3 ] x [Pb(Ni1/2W1/
2) When expressed as O 3 ] y [PbTiO 3 ] z (however, x
+y+z=1.00), and the compounding ratio x, y, z is the following composition point A: (x=0.89 y=0.01 z=0.10) B: (x=0.00 y=0.60 z=0.40) C: (x=0.00 y=0.30 z=0.70) D: (x=0.50 y=0.05 z=0.45) On the line connecting B and C 59-57953))
The present invention is characterized in that 0.05% to 1.0% by weight of zinc oxide (ZnO) is added as a subcomponent to the main component composition within the composition range surrounded by this line. (Example) The present invention will be described in detail below with reference to Examples. Lead oxide (PbO), nickel oxide (NiO), niobium oxide (Nb 2 O 5 ), tungsten oxide (WO 3 ), titanium oxide (TiO 2 ), and zinc oxide (ZnO) with a purity of 99.9% or higher are used as starting materials. and weigh it to the specified mixing ratio. Then after wet mixing in a ball mill 750
Pre-fired at ℃~825℃. Thereafter, it was ground in a ball mill, separated, dried, and then sized with an organic binder and pressed. Four disks with a diameter of 16 mm and a thickness of approximately 2 mm were created. Next, it was sintered in air at 900-1050°C for 1 hour. Silver electrodes are placed on the top and bottom surfaces of the sintered disk.
Baked at °C, frequency 1K with digital LCR meter
The capacitance and dielectric loss (tan〓) were measured at Hz and a voltage of 1 Vrms, and the dielectric constant was calculated. Next, check 50V using a super insulation resistance tester.
The voltage was applied for 1 minute, the insulation resistance was measured, and the specific resistance was calculated. The average value of four samples was taken as the representative value. Table 1 shows the relationship between the blending ratios x, y, and z obtained in this way and the properties.
【表】【table】
【表】
注 No.に＊印を付したものは本発明に含まれな
いものである。
表に示した結果明らかなようにPb（Ni1／
3Nb2／３）O3−Pb（Ni1／2W1／２）O3−
PbTiO3三成分組成物に副成分であるZnOを主成
分に対して0.05重量％ないし1.0重量％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
用的に水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。
なお本発明の主成分組成範囲外では焼結温度が
高くなつたり、誘電率が低下するため前述の様に
限定される。また副成分が0.05重量％未満および
1.0重量％を越えるものは誘電率の改善効果が小
さくなる。
本発明では副成分として酸化亜鉛（ZnO）を使
用しているが、高温で容易に分解し酸化物を形成
する亜鉛の炭酸塩や水酸化物などを使用してもよ
い。[Table] Note: Items marked with * are not included in the present invention.
As is clear from the results shown in the table, Pb(Ni1/
3Nb2/3)O 3 −Pb(Ni1/2W1/2)O 3 −
The present invention, in which the PbTiO 3 three-component composition contains ZnO as a subcomponent in an amount of 0.05% to 1.0% by weight based on the main component, improves the dielectric constant while maintaining dielectric loss and resistivity at a favorable and practical level. is increasing,
The present invention provides an excellent material as a ceramic composition for multilayer capacitors. It should be noted that outside the main component composition range of the present invention, the sintering temperature increases and the dielectric constant decreases, so the limitations are as described above. In addition, the subcomponents are less than 0.05% by weight and
If it exceeds 1.0% by weight, the effect of improving the dielectric constant will be small. In the present invention, zinc oxide (ZnO) is used as a subcomponent, but zinc carbonate, hydroxide, etc., which easily decompose at high temperatures to form oxides, may also be used.
Claims (1)
３）O3］、ニツケル・タングステン酸鉛［Pb
（Ni1／2W1／２）O3］とチタン酸鉛［PbTiO3］
からなる三成分磁器組成物を［Pb（Ni1／3Nb2／
３）O3］x［Pb（Ni1／2W1／２）O3］y［PbTiO3］z
と表現したとき（ただしｘ＋ｙ＋ｚ＝1.00）、配
合比ｘ、ｙ、ｚがこの三成分組成図において、以
下の組成点 Ａ：（ｘ＝0.89 ｙ＝0.01 ｚ＝0.10） Ｂ：（ｘ＝0.00 ｙ＝0.60 ｚ＝0.40） Ｃ：（ｘ＝0.00 ｙ＝0.30 ｚ＝0.70） Ｄ：（ｘ＝0.50 ｙ＝0.05 ｚ＝0.45） を結ぶ線上（ただしＢとＣを結ぶ線上は除く）お
よびこの線に囲まれる組成範囲にある主成分組成
物に副成分として酸化亜鉛（ZnO）を0.05重量％
ないし1.0重量％添加・含有せしめることを特徴
とする磁器組成物。[Claims] 1. Lead nickel niobate [Pb(Ni1/3Nb2/
3) O 3 ], lead nickel tungstate [Pb
(Ni1/2W1/2)O 3 ] and lead titanate [PbTiO 3 ]
A ternary porcelain composition consisting of [Pb(Ni1/3Nb2/
3) O 3 ] x [Pb(Ni1/2W1/2)O 3 ] y [PbTiO 3 ] z
(however, x + y + z = 1.00), the compounding ratio x, y, z is the following composition point A: (x = 0.89 y = 0.01 z = 0.10) in this ternary composition diagram B: (x = 0.00 y =0.60 z=0.40) C: (x=0.00 y=0.30 z=0.70) D: (x=0.50 y=0.05 z=0.45) On the line connecting (excluding the line connecting B and C) and on this line Add 0.05% by weight of zinc oxide (ZnO) as a subcomponent to the main component composition in the enclosed composition range.
A porcelain composition characterized in that it is added or contained in an amount of 1.0 to 1.0% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61089321A JPS62246860A (en) | 1986-04-17 | 1986-04-17 | Ceramic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61089321A JPS62246860A (en) | 1986-04-17 | 1986-04-17 | Ceramic composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62246860A JPS62246860A (en) | 1987-10-28 |
| JPH053425B2 true JPH053425B2 (en) | 1993-01-14 |
Family
ID=13967402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61089321A Granted JPS62246860A (en) | 1986-04-17 | 1986-04-17 | Ceramic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62246860A (en) |
-
1986
- 1986-04-17 JP JP61089321A patent/JPS62246860A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62246860A (en) | 1987-10-28 |
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