JPH0465020A - dielectric porcelain composition - Google Patents
dielectric porcelain compositionInfo
- Publication number
- JPH0465020A JPH0465020A JP2176647A JP17664790A JPH0465020A JP H0465020 A JPH0465020 A JP H0465020A JP 2176647 A JP2176647 A JP 2176647A JP 17664790 A JP17664790 A JP 17664790A JP H0465020 A JPH0465020 A JP H0465020A
- Authority
- JP
- Japan
- Prior art keywords
- oxide
- composition
- less
- porcelain composition
- dielectric porcelain
- 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 18
- 229910052573 porcelain Inorganic materials 0.000 title 1
- 239000000919 ceramic Substances 0.000 claims description 6
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Chemical compound [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 claims 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 1
- 229910000416 bismuth oxide Inorganic materials 0.000 claims 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims 1
- 239000000292 calcium oxide Substances 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 claims 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000003989 dielectric material Substances 0.000 description 4
- -1 organic acid salts Chemical class 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 102100032587 MOB-like protein phocein Human genes 0.000 description 1
- 101710168500 MOB-like protein phocein Proteins 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910000311 lanthanide oxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
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、大きな比誘電率（εｒ）を持ち、共振周波数
の温度係数（τｆ）が、小さくかつ広範囲に制御できる
誘電体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 dielectric ceramic composition that has a large dielectric constant (εr) and a temperature coefficient (τf) of a resonant frequency that can be controlled over a small and wide range. It is something.
（従来の技術）
ＭＨｚ帯からＧ）Ｉｚ帯のマイクロ波帯域の電波を利用
した自動車電話、コードレス電話等の移動無線機に、最
近、セラミックフィルターが多く用いられるようになっ
た。これは、セラミックフィルターを構成している誘電
体が大きな比誘電率（εｒ）、無負荷Ｑ（ＱＯ）を持ち
、共振周波数の温度係数（τｆ）の値が、その誘電体の
組成によりＯを中心として正負いずれも自由に制御でき
るという利点を持つことに起因している。(Prior Art) Ceramic filters have recently come into widespread use in mobile radio devices such as car phones and cordless phones that utilize radio waves in the microwave band from the MHz band to the G)Iz band. This is because the dielectric material that makes up the ceramic filter has a large relative dielectric constant (εr) and no-load Q (QO), and the value of the temperature coefficient (τf) of the resonant frequency exceeds O due to the composition of the dielectric material. This is due to the fact that it has the advantage of being able to freely control both positive and negative directions.
従来、上述の誘電体材料として、ＭｇＯ−Ｃａ０−Ｔｉ
Ｏ□系、Ｚｒ０２−Ｔｉｅ□−５ｎ０２系、Ｂａｄ−Ｔ
ｉＯ２−ランタノイド酸化物系を使用していた。Conventionally, MgO-Ca0-Ti has been used as the above-mentioned dielectric material.
O□ series, Zr02-Tie□-5n02 series, Bad-T
An iO2-lanthanide oxide system was used.
（発明が解決しようとする課題）
しかしながら、これらの材料はεｒがたがだか１００以
下であり、共振素子を作成した場合その小型化（１／ｌ
ｒ）には、おのずと限界があった。(Problem to be solved by the invention) However, the εr of these materials is only 100 or less, and when a resonant element is created, its size can be reduced (1/l
r) naturally had its limits.
従って、εｒの高い誘電体磁器組成物が切望されていた
。Therefore, a dielectric ceramic composition with a high εr has been desired.
（課題を解決するための手段）
本発明者らは、ＭＨｚ帯からＧＨｚ帯のマイクロ波領域
において、εｒが１００以上、かっτｆが±１１００ｐ
ｐ／ ’Ｃ以下、かつＱｏが１００以上の組成物を得る
べく、種々の組成系について検討した結果、ＣａＯａモ
ル％、 ＳｒＯｂモル％Ｉ Ｂ１２Ｏ３０モル％。(Means for Solving the Problem) The present inventors have determined that εr is 100 or more and τf is ±1100 p in the microwave region from the MHz band to the GHz band.
In order to obtain a composition with p/'C or less and Qo of 100 or more, we investigated various composition systems and found that: CaOa mol%, SrOb mol% I B12O 30 mol%.
Ｔｉｅ２ｄモル％の組成系よりなり、それぞれの組成範
囲が
０≦ａ ＜３０． Ｏ＜ ｂ≦２０１０≦ｃ≦５０
． ４０≦ｄ≦８０
ただしＯ＜ ａ ＋ ｂ≦３０である主成分に、酸化モ
リブデン（Ｍｏｂ、 ）を５重量％以下、酸化タングス
テン（ＷＯａ ）を５重量％以下のうち少なくとも１種
類添加した時に、所望の特性が得られることを明らかと
したものである。It consists of a composition system of Tie2d mol%, and each composition range is 0≦a<30. O< b≦2010≦c≦50
．． 40≦d≦80 However, O<a + b≦30 When at least one of molybdenum oxide (Mob, ) is added at 5% by weight or less and tungsten oxide (WOa) at 5% by weight or less, This clarifies that the desired characteristics can be obtained.
本発明において、Ｃａｂ、ＳｒＯ，Ｂｉ２Ｏ，、ＴｉＯ
２の組成は、この範囲外では、Ｑ、が１００以下となり
実用的ではない。In the present invention, Cab, SrO, Bi2O, TiO
If the composition of No. 2 is outside this range, Q will be 100 or less, which is not practical.
また、Ｍｏｂ、、、 ＷＯ，の添加量が５重量％より多
いと、Ｑ、が１００以下となり、τｆもマイナス側に大
きくなり、実用には不適となる。Furthermore, if the amount of Mob, ..., WO, added is more than 5% by weight, Q becomes 100 or less, and τf also becomes large on the negative side, making it unsuitable for practical use.
なお、本発明の誘電体磁器組成物は、所定量の素原料を
混合・焼成することにより、最終的に酸化物磁器組成物
になればよく、素原料は熱分解して酸化物となる炭酸塩
・硝酸塩・有機酸塩などでも良い。Note that the dielectric ceramic composition of the present invention can be finally made into an oxide ceramic composition by mixing and firing a predetermined amount of raw materials, and the raw materials are carbonic acid that is thermally decomposed to become an oxide. Salts, nitrates, organic acid salts, etc. may also be used.
（実施例）
ＣａＣＯｌｌ ５ｒＣ０３ｙ Ｂ１２Ｏ３ＨＴｊＯ□ｌ
Ｍ２Ｏ３１”’３を第１表に示す各組成で秤量し、め
のうポールを入れたポリエチレンポットにアセトンとと
もに投入し。(Example) CaCOll 5rC03y B12O3HTjO□l
M2O31'''3 was weighed according to each composition shown in Table 1, and put into a polyethylene pot containing an agate pole together with acetone.
１６時時間式混合した。The mixture was mixed for 16 hours.
このスラリーを加熱乾燥した後、５メツシユのふるいで
整粒し、空気中において１０００℃＝２時間で仮焼し、
再び、めのうボールを入れたポリエチレンポットにアセ
トンとともに投入し、１６時間粉砕した。After heating and drying this slurry, it was sieved through a 5-mesh sieve, and calcined in air at 1000°C for 2 hours.
Again, the agate balls were placed in a polyethylene pot together with acetone and ground for 16 hours.
得られたスラリーを加熱乾燥した後、ポリビニルアルコ
ール水溶液を加えて混線を行い、３２メツシユのふるい
で造粒した。After the obtained slurry was dried by heating, an aqueous polyvinyl alcohol solution was added to perform cross-mixing, and the mixture was granulated using a 32-mesh sieve.
造粒粉をｉｔ／ａ＋Ｔで成形し、空気中において１２０
０〜１４００℃４時間で焼成した。得られた焼成体を直
径約３０＋＋ｍ、高さ約１５ｒｍに加工し、約Ｉ ＧＨ
ｚに生ずるＴＥｏ工、モードのピークで、ｔｒおよびＱ
。を算出し、次いで一２０℃から＋６０℃における共振
周波数の変化より、τｆを求めた。The granulated powder was molded using IT/A+T and heated to 120°C in air.
It was fired at 0 to 1400°C for 4 hours. The obtained fired body was processed to have a diameter of about 30++m and a height of about 15rm, and
At the peak of the TEo mode that occurs at z, tr and Q
. was calculated, and then τf was determined from the change in resonance frequency from -20°C to +60°C.
各特性を第１表に示した。なお、本発明の組成範囲内の
試料は実施例、本発明の組成範囲外の試料は比較例とし
て区別した。Each characteristic is shown in Table 1. Note that samples within the composition range of the present invention were classified as Examples, and samples outside the composition range of the present invention were classified as Comparative Examples.
（発明の効果）
本発明は、以上のようにマイクロ波領域において、ｆｒ
が大きく、Ｑ、も高く、又τｆの値をＣａＯとＳｒＯの
組成比、又Ｍｏｂ３． ＷＯ３の添加量により幅広く調
整できるものであり、マイクロ波用誘電体、また温度補
償用コンデンサなどに用いることができ、工業的価値が
高いものである。(Effects of the Invention) As described above, the present invention provides fr
is large, Q is also high, and the value of τf is determined by the composition ratio of CaO and SrO, and Mob3. It can be adjusted over a wide range by adjusting the amount of WO3 added, and can be used for microwave dielectrics, temperature compensation capacitors, etc., and has high industrial value.
Claims (1)
Ｏ）、酸化ビスマス（Ｂｉ＿２Ｏ＿３）および酸化チタ
ン（ＴｉＯ＿２）を構成成分とし、組成式を ａ ＣａＯ・ｂ ＳｒＯ・ｃ Ｂｉ＿２Ｏ＿３・ｄ Ｔ
ｉＯ＿２で表した時、ａ，ｂ，ｃ，ｄがモル％で、それ
ぞれ ０≦ａ＜３０，０＜ｂ≦２０ １０≦ｃ≦５０，４０≦ｄ≦８０ ただし ０＜ａ＋ｂ≦３０ の範囲からなる主成分に、 酸化モリブデン（ＭｏＯ＿３）を５重量％以下、酸化タ
ングステン（ＷＯ＿３）を５重量％以下のうち少なくと
も１種類添加したことを特徴とする誘電体磁器組成物。[Claims] Calcium oxide (CaO), strontium oxide (Sr
O), bismuth oxide (Bi_2O_3) and titanium oxide (TiO_2) are the constituent components, and the compositional formula is a CaO・b SrO・c Bi_2O_3・d T
When expressed in iO_2, a, b, c, and d are mol%, respectively, from the range of 0≦a<30, 0<b≦20, 10≦c≦50, 40≦d≦80, but 0<a+b≦30. A dielectric ceramic composition characterized in that at least one of molybdenum oxide (MoO_3) of 5% by weight or less and tungsten oxide (WO_3) of 5% by weight or less is added to the main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2176647A JPH0465020A (en) | 1990-07-02 | 1990-07-02 | dielectric porcelain composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2176647A JPH0465020A (en) | 1990-07-02 | 1990-07-02 | dielectric porcelain composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0465020A true JPH0465020A (en) | 1992-03-02 |
Family
ID=16017239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2176647A Pending JPH0465020A (en) | 1990-07-02 | 1990-07-02 | dielectric porcelain composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0465020A (en) |
-
1990
- 1990-07-02 JP JP2176647A patent/JPH0465020A/en active Pending
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