JPS63174207A - Dielectric ceramic composition - Google Patents
Dielectric ceramic compositionInfo
- Publication number
- JPS63174207A JPS63174207A JP62004330A JP433087A JPS63174207A JP S63174207 A JPS63174207 A JP S63174207A JP 62004330 A JP62004330 A JP 62004330A JP 433087 A JP433087 A JP 433087A JP S63174207 A JPS63174207 A JP S63174207A
- Authority
- JP
- Japan
- Prior art keywords
- dielectric ceramic
- temperature coefficient
- composition
- dielectric constant
- ceramic 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
- 239000000203 mixture Substances 0.000 title claims description 23
- 239000000919 ceramic Substances 0.000 title claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052573 porcelain Inorganic materials 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium oxide Inorganic materials [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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
本発明は誘電率が高く、温度係数が小さく、良好度Ｑに
すぐれ、かつ絶縁抵抗の高い誘電体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 dielectric ceramic composition that has a high dielectric constant, a small temperature coefficient, an excellent quality Q, and a high insulation resistance.
従来の技術
従来から温度係数の小さい誘電体が、コンデンサ用素子
として要求され、誘電体磁器組成物として下記のような
系が知られている。2. Description of the Related Art A dielectric material with a small temperature coefficient has been required as a capacitor element, and the following systems are known as dielectric ceramic compositions.
ＭｇＯ−ＴｉＯ２Ｃｏｏ系
Ｌａ２０３−２ＴＬａ２Ｏ３−２Ｔｉ０２−ＣａＴｉＯ
３−２系ＴｉＯ２−ＢａＴｉＯ３Ｂｉ２Ｏ３Ｌａ２Ｏ３
系ＳｒＺｒＯ３ＳｒＯＮｂ２Ｏ５ＣａＴｉＯ３系発明が
解決しようとする問題点
しかし、これらの組成は誘電率が低（、又、５ｒＺｒ（
ｈ ５ｒＯ−ＮｂｘＯｓ−ＣａＴｉ０３系は良好度Ｑ
も悪いという問題点があった。MgO-TiO2Coo system La203-2TLa2O3-2Ti02-CaTiO
3-2 system TiO2-BaTiO3Bi2O3La2O3
Problems to be solved by the system SrZrO3SrONb2O5CaTiO3 system However, these compositions have a low dielectric constant (and 5rZr
h 5rO-NbxOs-CaTi03 system has good quality Q
There was a problem that it was also bad.
本発明は誘電率が高（、温度係数が小さく、良好度Ｑに
すぐれ、かつ絶縁抵抗が高い誘電体磁器を得ることを目
的とするものである。The object of the present invention is to obtain a dielectric ceramic having a high dielectric constant (low temperature coefficient), excellent Q quality, and high insulation resistance.
問題点を解決するための手段
この問題点を解決するために本発明は、一般式％式％）
と表わした時、
ｘ、ｙ、ｚが以下に表わす各点ａ、ｂ、ｃ、ｄで囲まれ
るモル比の範囲にある組成物に対し、ＰｂＯが１５重量
％以下添加含有されていることを特徴とする誘電体磁器
組成物である。Means for Solving the Problem In order to solve this problem, the present invention provides the following: When expressed as the general formula %), x, y, z are at each point a, b, c, d expressed below. This is a dielectric ceramic composition characterized in that 15% by weight or less of PbO is added to the composition within the enclosed molar ratio range.
図は本発明にかかる組成物の主成分の組成範囲を示す三
角図であり、主成分の組成範囲を限定した理由を図を参
照しながら説明する。Ａ領域では焼結困難となり誘電率
、良好度Ｑ、絶縁抵抗が低下する。Ｂ＠域では温度係数
が一側に大きくなり過ぎて、実用的でなくなる。Ｃ領域
では温度係数が＋側に大きくなり、誘電率も小さい。Ｄ
領域では焼結が困難となり、誘電率、良好度Ｑ、絶縁抵
抗が低下する。又、Ｏｈｍ≦０，２５の範囲ではｍを太
き（すると温度係数は＋側に移行し、適当な組成を選ぶ
ことによって温度係数ＮＰＯ付近で誘電率の大きな組成
が得られる。ｍが０．２５を越えると焼結が困難となり
、誘電率、良好度Ｑ。The figure is a triangular diagram showing the composition range of the main components of the composition according to the present invention, and the reason for limiting the composition range of the main components will be explained with reference to the figure. In region A, sintering becomes difficult and the dielectric constant, quality Q, and insulation resistance decrease. In the B@ range, the temperature coefficient becomes too large on one side, making it impractical. In region C, the temperature coefficient becomes large on the + side and the dielectric constant is also small. D
In this region, sintering becomes difficult, and the dielectric constant, quality Q, and insulation resistance decrease. In addition, in the range of Ohm≦0,25, m is increased (then the temperature coefficient shifts to the + side, and by selecting an appropriate composition, a composition with a large dielectric constant near the temperature coefficient NPO can be obtained. If it exceeds 25, sintering becomes difficult, and the dielectric constant and good quality Q.
絶縁抵抗が低下する。又、０．０５≦ｎ＜１．００の範
囲ではｎを大きくすると、温度係数は＋側に移行し、適
当な組成を選ぶ事によって温度係数ＮＰＯ付近で誘電率
の大きな組成物が得られる。Insulation resistance decreases. Further, in the range of 0.05≦n<1.00, when n is increased, the temperature coefficient shifts to the + side, and by selecting an appropriate composition, a composition with a large dielectric constant near the temperature coefficient NPO can be obtained.
ｎが０．０５未満になると温度係数が一側に大きくなり
実用的でな（なる。又、ＰｂＯの添加については、添加
量を増やすに従って誘電率を増大させることができ、温
度係数を＋側へ移行させることができ、適当な添加量を
選ぶ事によって温度係数ＮＰＯ付近で誘電率の大きな組
成物が得られる。When n is less than 0.05, the temperature coefficient increases to one side, making it impractical.Also, with the addition of PbO, the dielectric constant can be increased as the amount added increases, and the temperature coefficient increases to the + side. By selecting an appropriate amount of addition, a composition with a large dielectric constant near the temperature coefficient NPO can be obtained.
本発明は更に、上記主成分に対し、マンガン。The present invention further includes manganese as the main component.
クロム、鉄、ニッケル、コバルト及びケイ素の元素の群
の中から選ばれた少な（とも１種を、それぞれＭｎＯ２
，Ｃｒ２Ｏ３，Ｆｅｄ、Ｎｉｐ、Ｃｏｏ及び５ｉ０２に
換算して、該主成分の０．０５〜１．００重量％添加せ
しめた構成とすることができる。これらの添加物は磁器
の焼結性を向上する効果を有し、その添加量が０．０５
重量％未満では添加効果はな（，１，００重量％を越え
ると誘電率が低下し実用的でなくなる。One of the elements selected from the group of elements chromium, iron, nickel, cobalt and silicon is
, Cr2O3, Fed, Nip, Coo and 5i02, it can be added in an amount of 0.05 to 1.00% by weight of the main component. These additives have the effect of improving the sinterability of porcelain, and when the amount added is 0.05
If it is less than 1,000% by weight, there is no effect of addition (but if it exceeds 1,000% by weight, the dielectric constant decreases and it becomes impractical).
作用
本発明の誘電体磁器組成物により、誘電率が高く温度係
数が小さく、良好度Ｑにすぐれ、かつ絶縁抵抗が高い誘
電体磁器を得ることができる。Function: Using the dielectric ceramic composition of the present invention, it is possible to obtain a dielectric ceramic having a high dielectric constant, a small temperature coefficient, an excellent quality Q, and a high insulation resistance.
実施例 以下に、具体的実施例により説明する。Example This will be explained below using specific examples.
（実施例１）
出発原料には化学的に高純度のＢａＣＯ３゜ＴｉＯ２，
ＺｒＯ２，Ｐｒ２０＋ｗ３＋ Ｎｄ２Ｏ３及びＰｂＯ粉
末を第１表に示す組成になるように秤量し、めのうポー
ルを備えたゴム内張りしたボールミルに純水とともに入
れ、湿式混合後、脱水乾燥した。(Example 1) Starting materials include chemically highly purified BaCO3°TiO2,
ZrO2, Pr20+w3+ Nd2O3 and PbO powders were weighed to have the composition shown in Table 1, put into a rubber-lined ball mill equipped with an agate pole together with pure water, wet mixed, and then dehydrated and dried.
この乾燥粉末を高アルミナ質のルツボに入れ、１１００
℃で２時間仮焼した。この仮焼粉末をめのうボールを備
えたゴム内張りしたボールミルに純水とともに入れ、湿
式粉砕した。この粉砕物を脱水乾燥した後、粉末にバイ
ンダーとして濃度５％のポリビニールアルコール溶液を
９重量％添加して均質とした後、３２メツシユのふるい
を通して整粒した。整粒粉体を金型と油圧プレスを用い
て成形圧力１ｔｏｎ／ｃｎｒで直径１５ｍ、厚み０．４
ｍに成形し、成形物をジルコニア匣鉢中に入れ、空気中
において第１表に示す温度で２時間焼成し、第１表に示
す配合組成の誘電体磁器を得た。Put this dry powder in a high alumina crucible and
It was calcined at ℃ for 2 hours. This calcined powder was put into a rubber-lined ball mill equipped with agate balls together with pure water, and wet-pulverized. After dehydrating and drying the pulverized product, 9% by weight of a 5% polyvinyl alcohol solution was added as a binder to the powder to make it homogeneous, and the powder was sized through a 32-mesh sieve. The sized powder was molded using a mold and a hydraulic press at a molding pressure of 1 ton/cnr, with a diameter of 15 m and a thickness of 0.4
The molded product was placed in a zirconia sagger and fired in air at the temperature shown in Table 1 for 2 hours to obtain dielectric porcelain having the composition shown in Table 1.
これらの試料の電気特性は、試料の両面に銀電極を焼き
付け、誘電率、良好度Ｑ、温度係数はＹＨＰ社製デジタ
ルＬＣＲメータのモデル４２７５Ａを使用し、測定温度
２５℃、測定電圧１、ＯＶｒｍｓ、測定周波数ＩＭＨｚ
による測定より求めた。尚、温度係数は２５℃に於ける
容量値を基準とし、次式により求めた。The electrical properties of these samples were determined by baking silver electrodes on both sides of the samples, and measuring the dielectric constant, goodness factor Q, and temperature coefficient using a YHP digital LCR meter model 4275A at a measurement temperature of 25°C, a measurement voltage of 1, and OVrms. , measurement frequency IMHz
It was determined from measurements by Incidentally, the temperature coefficient was determined using the following formula based on the capacitance value at 25°C.
温度係数（ｐｐｍ／℃） ＝
［（Ｃｓｓ℃−Ｃ２５℃）／（Ｃ２５℃ｘ ６０）］ｘ
１０６絶縁抵抗はＹＨＰ社製ＨＲメータのモデル４３
２９Ａを使用し測定電圧り、Ｃ，５０Ｖ、測定時間１分
間による測定より求めた。試験結果を第１表に示した。Temperature coefficient (ppm/°C) = [(Css°C-C25°C)/(C25°C x 60)] x
106 insulation resistance is YHP HR meter model 43
It was determined by measurement using 29A, a measurement voltage of C, 50V, and a measurement time of 1 minute. The test results are shown in Table 1.
（実施例２）
出発原料には化学的に高純度のＢａ ＣＯ３１ＴｉＯ２
，ＺｒＯ２，Ｐｒ２０＋＋／３．Ｎｄ２Ｏ３，Ｐｂ０゜
ＭｎＯ２，Ｃｒ２Ｏ３，Ｆｅ○、Ｎｉｐ、ＣａＯ及び５
ｉ０２粉末を第２表に示す組成になるように秤量し、そ
れ以後は実施例１の場合と同様に処理して第２表に示す
配合組成の誘電体磁器を得た。(Example 2) Chemically high purity Ba CO31TiO2 was used as the starting material.
, ZrO2, Pr20++/3. Nd2O3, Pb0゜MnO2, Cr2O3, Fe○, Nip, CaO and 5
The i02 powder was weighed so as to have the composition shown in Table 2, and thereafter treated in the same manner as in Example 1 to obtain dielectric porcelain having the composition shown in Table 2.
これらの試料の試験方法は実施例１と同一であり試験結
果を第２表に示す。The testing methods for these samples were the same as in Example 1, and the test results are shown in Table 2.
（以 下 余 白 ）
発明の効果
以上のように本発明によれば、誘電率が高（、温度係数
が小さく、良好度Ｑにすぐれ、かつ絶縁抵抗の高い誘電
体磁器が得られる。又、マンガン、クロム、鉄、ニッケ
ル、コバルト及びケイ素の酸化物の添加により焼成温度
を低下させることができる。(Hereinafter, blank) Effects of the Invention As described above, according to the present invention, a dielectric ceramic having a high dielectric constant (low temperature coefficient), excellent Q quality, and high insulation resistance can be obtained. The firing temperature can be lowered by adding oxides of manganese, chromium, iron, nickel, cobalt and silicon.
さらに得られた誘電体磁器は高誘電率であるため、素体
をきわめて小形にすることができ、回路の微小化に有効
である。Furthermore, since the obtained dielectric ceramic has a high dielectric constant, the element body can be made extremely small, which is effective for miniaturizing circuits.
図は本発明にかかる主成分の組成範囲を示す三角図であ
る。The figure is a triangular diagram showing the composition range of the main components according to the present invention.
Claims (2)
２）＿ｍ］−ｚ［（Ｐｒ＿２Ｏ＿１＿１＿／＿３）＿１
＿−＿ｎ（Ｎｄ＿２Ｏ＿３）＿ｎ］と表わした時、 ［ただし ｘ＋ｙ＋ｚ＝１．００ ０＜Ｍ≦０．２５ ０．０５≦ｎ＜１．００］ ｘ、ｙ、ｚが以下に表わす各点ａ、ｂ、ｃ、ｄで囲まれ
るモル比の範囲にある組成物に対しＰｂＯが１５重量％
以下添加含有されていることを特徴とする誘電体磁器組
成物。(1) General formula xBaO-y[(TiO_2)_1_-_m(ZrO_
2)_m]-z[(Pr_2O_1_1_/_3)_1
＿−＿n(Nd_2O_3)_n] [However, x+y+z=1.00 0<M≦0.25 0.05≦n<1.00] When x, y, and z are each point a shown below, 15% by weight of PbO for the composition in the molar ratio range surrounded by b, c, d
A dielectric ceramic composition characterized in that it contains the following additives:
ケイ素の酸化物からなる群の中から選ばれた少なくとも
１種を、それぞれＭｎＯ＿２、Ｃｒ＿２Ｏ＿３、ＦｅＯ
、ＮｉＯ、ＣｏＯ及びＳｉＯ＿２に換算して、主成分の
０．０５乃至１．００重量％添加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
。(2) At least one member selected from the group consisting of oxides of manganese, chromium, iron, nickel, cobalt, and silicon is added to MnO_2, Cr_2O_3, and FeO, respectively.
, NiO, CoO and SiO_2, the dielectric ceramic composition according to claim 1, further contains 0.05 to 1.00% by weight of the main components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62004330A JPS63174207A (en) | 1987-01-12 | 1987-01-12 | Dielectric ceramic composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62004330A JPS63174207A (en) | 1987-01-12 | 1987-01-12 | Dielectric ceramic composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63174207A true JPS63174207A (en) | 1988-07-18 |
Family
ID=11581433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62004330A Pending JPS63174207A (en) | 1987-01-12 | 1987-01-12 | Dielectric ceramic composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63174207A (en) |
-
1987
- 1987-01-12 JP JP62004330A patent/JPS63174207A/en active Pending
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