JPH0457632B2 - - Google Patents
Info
- Publication number
- JPH0457632B2 JPH0457632B2 JP58193806A JP19380683A JPH0457632B2 JP H0457632 B2 JPH0457632 B2 JP H0457632B2 JP 58193806 A JP58193806 A JP 58193806A JP 19380683 A JP19380683 A JP 19380683A JP H0457632 B2 JPH0457632 B2 JP H0457632B2
- Authority
- JP
- Japan
- Prior art keywords
- composition
- present
- sintered
- porcelain
- ternary
- 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 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 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 3
- 238000010586 diagram Methods 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 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
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 2
- 229910002113 barium titanate Inorganic materials 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000002156 mixing Methods 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
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 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
- 239000010955 niobium Substances 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
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Insulating Materials (AREA)
Description
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、誘電損失が小さく、
しかも絶縁抵抗の高い磁器組成物に関するもので
ある。
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。このため銀やニツケル
などを主成分とする安価な金属が使用できるよう
な、できるだけ低温で焼結できる磁器が必要であ
る。このため既にPb（Fe2/3W1/3）O3−Pb（Fe1/2
Nb1/2）O3（特公昭55−34962）や（Sr Pb）PiO3
−Pb（Mg1/2W1/2）O3（特開昭52−21699）などの
多くの提案がある。
本発明の磁器組成物は、これらと異なり、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成分組成物を
〔Pb（Ni1/3Nb2/3）O3〕x〔Pb（Ni1/2W1/2）O3〕y
〔PbTiO3〕zと表現した時（ただしｘ＋ｙ＋ｙ＝
1.00）、配合比ｘ，ｙ，ｚが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を結ぶ線上は先願の特
願昭57−167820により除く）およびこの線に囲ま
れる組成範囲にあることを特徴とする。
本発明の磁器組成物は、1050℃以下の低温で焼
結でき、誘電率が高く、誘電損失が小さく、しか
も絶縁抵抗が高いという優れた特性を示す。
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）および酸
化チタン（TiO2）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（tanδ）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と特性の関係を表に示し、又各組成点を図に示
す。
The present invention provides a ceramic composition that can be sintered at a low temperature of 1050°C or less, has a high dielectric constant, has a small dielectric loss,
Moreover, it relates to a ceramic composition with high insulation resistance. 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 increasing manufacturing costs. . For this reason, there is a need for porcelain that can be sintered at as low a temperature as possible, allowing the use of inexpensive metals such as silver or nickel as its main components. Therefore, Pb(Fe 2/3 W 1/3 )O 3 −Pb(Fe 1/2
Nb 1/2 ) O 3 (Special Publication No. 55-34962) and (Sr Pb) PiO 3
There are many proposals such as -Pb(Mg 1/2 W 1/2 ) O 3 (Japanese Patent Application Laid-open No. 52-21699). Unlike these, the porcelain composition of the present invention contains lead nickel niobate [Pb(Ni 1/3 Nb 2/3 ) O 3 ] and lead nickel tungstate [Pb(Ni 1/2 W 1/2 )]. [Pb(Ni 1/3 Nb 2/3 ) O 3 ] x [Pb(Ni 1/2 W 1/2 ) O 3 ] y
[PbTiO 3 ] When expressed as z (however, x+y+y=
1.00), 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 (however, the line connecting B and C is excluded due to the earlier patent application No. 167820) and this line It is characterized by being in a composition range surrounded by. The ceramic composition of the present invention can be sintered at a low temperature of 1050°C or lower, and exhibits excellent properties such as high dielectric constant, low dielectric loss, and high insulation resistance. The present invention will be explained in detail below with reference to Examples. Lead oxide (PbO), nickel oxide (NiO), niobium oxide (Nb 2 O 5 ), tungsten oxide (WO 3 ), and titanium oxide (TiO 2 ) with a purity of 99.9% or higher are used as starting materials, and the predetermined compounding ratio is Weigh. Then after wet mixing in a ball mill 750
Pre-baked 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 δ) were measured at Hz and a voltage of 1 Vrms, and the dielectric constant was calculated. Next, use a super insulation resistance meter
Apply a voltage of 50V for 1 minute and measure the insulation resistance.
The specific resistance was calculated. The average value of four samples was taken as the representative value. The blending ratio x, y, obtained in this way,
The relationship between z and properties is shown in the table, and each composition point is shown in the figure.
【表】
注 No.に＊印を付したものは本発明に含まれ
ない
表に示した結果から明らかなように、本発明に
よれば誘電率が1570〜15540と高く、誘電損失が
0.1〜4.9％と小さく、さらに比抵抗が1.2×1011〜
2.3×1013Ω・cmという高い値を示し、実用的に
優れた磁器組成物が得られている。こうした優れ
た特性を示す磁器組成物が1050℃以下の低温で焼
結できるため、積層コンデンサの内部電極の低価
格比を実現できると共に、省エネルギーや炉材の
節約にもなるという極めて優れた効果も生じる。
なお三成分組成図のＡ，Ｂ，Ｃ，Ｄを結ぶ線上
（ＢとＣを結ぶ線上は先願の特願昭57−167820に
より除く）およびこの線に囲まれる組成範囲外で
は、誘電率が低下したり、比抵抗が低くなつた
り、焼結温度が高くなるため、本発明の特許請求
範囲から除かれる。[Table] Note Items marked with an asterisk (*) are not included in the present invention.As is clear from the results shown in the table, according to the present invention, the dielectric constant is as high as 1570 to 15540, and the dielectric loss is low.
It is as small as 0.1 to 4.9%, and the specific resistance is 1.2×10 11 to
It shows a high value of 2.3×10 13 Ω·cm, and a practically excellent porcelain composition has been obtained. Porcelain compositions that exhibit these excellent properties can be sintered at low temperatures below 1050°C, making it possible to achieve low cost ratios for the internal electrodes of multilayer capacitors, and also have the extremely excellent effect of saving energy and furnace materials. arise. Note that the dielectric constant is This is excluded from the scope of the claims of the present invention because the resistivity decreases, the resistivity decreases, and the sintering temperature increases.
図面は本発明の磁器組成物の組成範囲を示す三
角図である。
The drawing is a triangular diagram showing the composition range of the porcelain composition of the present invention.
Claims (1)
O3〕、ニツケル・タングステン酸鉛〔Pb（Ni1/2
W1/2）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ことを特徴
とする磁器組成物。[Claims] 1. Lead nickel niobate [Pb (Ni 1/3 Nb 2/3 )
O 3 ], lead nickel tungstate [Pb(Ni 1/2
A ternary porcelain composition consisting of [Pb (Ni 1/3 Nb 2/3 ) O 3 ] x [ Pb
When expressed as (Ni 1/2 W 1/2 )O 3 ] y [PbTiO 3 ] z (however, x+y+z=1.00), the compounding ratio x, y, z is the following composition point A in this ternary composition diagram. : (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 ) (excluding the line connecting B and C) and a composition range surrounded by this line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58193806A JPS6086072A (en) | 1983-10-17 | 1983-10-17 | Ceramic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58193806A JPS6086072A (en) | 1983-10-17 | 1983-10-17 | Ceramic composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6086072A JPS6086072A (en) | 1985-05-15 |
| JPH0457632B2 true JPH0457632B2 (en) | 1992-09-14 |
Family
ID=16314076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58193806A Granted JPS6086072A (en) | 1983-10-17 | 1983-10-17 | Ceramic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6086072A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS628405A (en) * | 1985-07-02 | 1987-01-16 | 日本特殊陶業株式会社 | High permeability ceramic composition |
| JP4476268B2 (en) * | 2006-10-13 | 2010-06-09 | 品川リフラクトリーズ株式会社 | Hot spray repair material |
-
1983
- 1983-10-17 JP JP58193806A patent/JPS6086072A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6086072A (en) | 1985-05-15 |
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