JPH08259265A - Glass-ceramic dielectric material - Google Patents
Glass-ceramic dielectric materialInfo
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- JPH08259265A JPH08259265A JP7094386A JP9438695A JPH08259265A JP H08259265 A JPH08259265 A JP H08259265A JP 7094386 A JP7094386 A JP 7094386A JP 9438695 A JP9438695 A JP 9438695A JP H08259265 A JPH08259265 A JP H08259265A
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- glass
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- dielectric
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特にマイクロ波領域の
周波数、具体的には、０．１ＧＨｚ以上の周波数におい
て高い比誘電率と低い誘電損失を有し、マイクロ波用回
路部品材料として好適なガラスセラミックス誘電体材料
に関するものである。BACKGROUND OF THE INVENTION The present invention has a high relative dielectric constant and a low dielectric loss, particularly at frequencies in the microwave region, specifically at frequencies of 0.1 GHz and above, and is suitable as a microwave circuit component material. Glass ceramic dielectric material.
【０００２】[0002]
【従来の技術】高度情報化時代を迎え、情報伝達は、よ
り高速化、高周波化の傾向にある。自動車電話やパーソ
ナル無線に代表される移動体通信機器、衛星放送、衛星
通信、ＣＡＴＶ等に代表されるニューメディア機器で
は、機器のコンパクト化が強く推し進められており、こ
れに伴い誘電体共振器等のマイクロ波用回路素子に対し
ても小型化が強く望まれている。2. Description of the Related Art In the advanced information age, information transmission tends to be faster and higher in frequency. In mobile communication devices typified by car phones and personal radios, and new media devices typified by satellite broadcasting, satellite communication, CATV, etc., compactification of the devices is strongly promoted, and along with this, dielectric resonators, etc. There is also a strong demand for miniaturization of the microwave circuit element.
【０００３】マイクロ波用回路素子の大きさは、使用電
磁波の波長が基準になる。比誘電率εの誘電体中を伝播
する電磁波の波長λは、真空中の波長をλ0 とすると、 λ＝λ0 ／√ε となる。回路素子は、εの平方根に反比例して小型化で
きるが、また素子の比誘電率が大きいと、電磁波エネル
ギーが素子内に集中するため、電磁波の漏れが少なくな
るという利点もある。The size of the microwave circuit element is based on the wavelength of the electromagnetic wave used. The wavelength λ of the electromagnetic wave propagating through the dielectric having the relative permittivity ε is λ = λ 0 / √ε, where λ 0 is the wavelength in vacuum. The circuit element can be miniaturized in inverse proportion to the square root of ε, but when the element has a large relative permittivity, electromagnetic wave energy is concentrated in the element, which also has an advantage of reducing electromagnetic wave leakage.
【０００４】上記事情から近年では、回路部品材料とし
て、マイクロ波領域の周波数において高い比誘電率を有
するセラミックスが各種開発されている。In view of the above circumstances, in recent years, various ceramics having a high relative dielectric constant at frequencies in the microwave region have been developed as circuit component materials.
【０００５】また上記の周波数において高い比誘電率を
有するガラス繊維によって樹脂を補強した材料も開発さ
れ、特開平４−３２２００７号公報、特開平４−３６７
５３７号公報において具体的に開示されている。Further, a material in which a resin is reinforced with glass fiber having a high relative dielectric constant at the above-mentioned frequency has been developed, which is disclosed in JP-A-4-322007 and JP-A-4-367.
This is specifically disclosed in Japanese Patent No. 537.
【０００６】[0006]
【発明が解決しようとする課題】上記したセラミックス
材料として、例えばＢａＯ−ＴｉＯ2 系セラミック、Ｂ
ａＯ−Ｌｎ2 Ｏ3 −ＴｉＯ2 系セラミック、複合ペロブ
スカイト系セラミック、ＺｒＯ2 −ＴｉＯ2 −ＳｎＯ2
系セラミック等が知られている。これらのセラミックス
材料は、高誘電率、低誘電損失であり、しかも強度が高
いものである。しかしながらこれらの材料をシート状に
成形し、複数枚を積層した後、焼成して積層型の高周波
デバイスや回路基板を作製する場合、１２００℃以上の
温度で焼成する必要があるため、電極や導体材料として
銀や銅を使用することができず、より耐熱性に優れた高
価な材料を使用する必要があり、材料コストが高くなる
という欠点を有している。As the above-mentioned ceramic materials, for example, BaO--TiO 2 system ceramics, B
aO-Ln 2 O 3 -TiO 2 based ceramic, composite perovskite ceramic, ZrO 2 -TiO 2 -SnO 2
Ceramics and the like are known. These ceramic materials have high permittivity, low dielectric loss, and high strength. However, when these materials are formed into a sheet, and a plurality of sheets are laminated and then fired to produce a high-frequency device or circuit board of a laminated type, it is necessary to fire at a temperature of 1200 ° C. or higher, and therefore electrodes and conductors are required. As a material, silver or copper cannot be used, and it is necessary to use an expensive material having higher heat resistance, which has a drawback that the material cost becomes high.
【０００７】また上記したガラス繊維によって樹脂を補
強した材料は、セラミックスに比べて切断、孔開け加工
等の点で優れているが、０．１ＧＨｚ以上の周波数で、
１０以上の比誘電率を得ようとすると、従来より回路基
板に広く用いられてきたエポキシ樹脂に代えて、ポリフ
ッ化ビニリデン（ε＝１３）やシアノ樹脂（ε＝１６〜
２０）のような比誘電率の高い樹脂を使用する必要があ
る。しかしながらこのような樹脂は、高周波（特に１０
０ＭＨｚ以上）での誘電損失（ｔａｎδ）が高く、マイ
クロ波用回路基板材料としては性能が良くない。しかも
このような樹脂を使用した回路基板は、基本的に耐熱性
が低いという欠点もある。Further, the above-mentioned material in which the resin is reinforced by the glass fiber is superior to ceramics in the point of cutting and punching, but at a frequency of 0.1 GHz or more,
In order to obtain a relative permittivity of 10 or more, instead of the epoxy resin which has been widely used for circuit boards from the past, polyvinylidene fluoride (ε = 13) or cyano resin (ε = 16 to
It is necessary to use a resin having a high relative dielectric constant such as 20). However, such resins are not suitable for high frequencies (especially 10
The dielectric loss (tan δ) at 0 MHz or higher) is high, and the performance is not good as a microwave circuit board material. Moreover, the circuit board using such a resin has a drawback that it is basically low in heat resistance.
【０００８】本発明の目的は、マイクロ波領域の周波数
において高い比誘電率と低い誘電損失を有し、且つ、低
温で焼成可能であるため、電極や導体材料として銀や銅
が使用可能であり、しかも機械的強度が高く、耐熱性が
良好であり、マイクロ波用回路部品材料として好適なガ
ラスセラミックス誘電体材料を提供することである。The object of the present invention is to have high relative permittivity and low dielectric loss at frequencies in the microwave region and to be able to fire at low temperatures, so that silver or copper can be used as an electrode or conductor material. Moreover, it is an object of the present invention to provide a glass ceramic dielectric material having high mechanical strength and good heat resistance, which is suitable as a microwave circuit component material.
【０００９】[0009]
【課題を解決するための手段】本発明者等は種々の実験
を重ねた結果、ＳｉＯ2 、Ｌｎ2 Ｏ3 、ＴｉＯ2 、Ｒ
Ｏ、ＺｎＯを主成分とする結晶性のガラス粉末と、高誘
電率、低誘電損失のセラミックス粉末とを組み合わせる
ことにより、上記目的を達成できるガラスセラミックス
材料が得られることを見いだし、本発明として提案する
ものである。Means for Solving the Problems As a result of various experiments conducted by the present inventors, SiO 2 , Ln 2 O 3 , TiO 2 , R
It was found that a glass-ceramic material capable of achieving the above object can be obtained by combining a crystalline glass powder containing O and ZnO as main components with a ceramic powder having a high dielectric constant and a low dielectric loss, and proposed as the present invention. To do.
【００１０】即ち、本発明のガラスセラミックス誘電体
材料は、重量百分率でガラス粉末４０〜９０％、セラミ
ックス粉末６０〜１０％からなり、該ガラス粉末がＳｉ
Ｏ2１０〜３５％、Ｌｎ2 Ｏ3 ５〜３５％、ＴｉＯ2 １
５〜５０％、ＲＯ ３〜４５％、ＺｎＯ ０．１〜２５
％、ＰｂＯ ０〜３０％、Ｂｉ2 Ｏ3 ０〜３０％、Ｚｒ
Ｏ2 ０〜２５％からなることを特徴とする。That is, the glass-ceramic dielectric material of the present invention is composed of 40 to 90% by weight of glass powder and 60 to 10% of ceramic powder, and the glass powder is Si.
O 2 10-35%, Ln 2 O 3 5-35%, TiO 2 1
5-50%, RO 3-45%, ZnO 0.1-25
%, PbO 0-30%, Bi 2 O 3 0-30%, Zr
It is characterized in that it consists of O 2 0 to 25%.
【００１１】本発明において、ガラス粉末とセラミック
ス粉末の割合を上記のように限定した理由は、ガラス粉
末が４０％より少ない（即ち、セラミックス粉末が６０
％より多い）と焼成時に緻密化し難いために、焼成体の
強度が著しく低下したり焼成体内部に多数の気孔が生じ
て誘電率が低下する。一方、ガラス粉末が９０％より多
い（即ち、セラミックス粉末が１０％より少ない）とガ
ラス成分が焼成体表面から浮き出し、表面に印刷される
導体との接着強度が低下する。In the present invention, the reason why the ratio of the glass powder and the ceramic powder is limited as described above is that the glass powder is less than 40% (that is, the ceramic powder is 60%).
%), It is difficult to densify at the time of firing, so that the strength of the fired body is remarkably reduced, or a large number of pores are formed inside the fired body, and the dielectric constant is reduced. On the other hand, when the glass powder content is more than 90% (that is, the ceramic powder content is less than 10%), the glass component is raised from the surface of the fired body, and the adhesive strength with the conductor printed on the surface is lowered.
【００１２】またガラス粉末の組成限定理由は以下の通
りである。The reasons for limiting the composition of the glass powder are as follows.
【００１３】ＳｉＯ2 はガラスのネットワークフォーマ
ーであり、その含有量は１０〜３５％、好ましくは１５
〜３０％である。ＳｉＯ2 が１０％より少ないとガラス
化範囲より外れ、安定したガラスが得られなくなり、３
５％より多いとガラスの比誘電率が低くなる。SiO 2 is a glass network former, and its content is 10 to 35%, preferably 15%.
~ 30%. If the SiO 2 content is less than 10%, it will be out of the vitrification range and stable glass will not be obtained.
If it exceeds 5%, the relative dielectric constant of the glass tends to be low.
【００１４】Ｌｎ2 Ｏ3 （Ｌａ2 Ｏ3 、ＣｅＯ2 、Ｐｒ
6 Ｏ11、Ｎｄ2 Ｏ3 等のランタノイド系酸化物）は比誘
電率を高める成分であるとともに析出結晶の構成成分と
なり、その含有量は合量で５〜３５％、好ましくは１０
〜３０％である。Ｌｎ2 Ｏ3の合量が５％より少ないと
析出結晶量が少なくなり、比誘電率が低下するとともに
焼成体の強度が低下し、３５％より多いとガラス成形時
に失透し易くなる。Ln 2 O 3 (La 2 O 3 , CeO 2 , Pr
(Lanthanoid oxides such as 6 O 11 and Nd 2 O 3 ) are components for increasing the relative dielectric constant and are also components for the precipitated crystals. The total content is 5 to 35%, preferably 10%.
~ 30%. When the total amount of Ln 2 O 3 is less than 5%, the amount of precipitated crystals decreases, the relative dielectric constant decreases, and the strength of the fired product decreases, and when it exceeds 35%, devitrification tends to occur during glass forming.
【００１５】ＴｉＯ2 も比誘電率を高める成分であると
ともに析出結晶の構成成分となる。またＳｉＯ2 と同じ
くガラスのネットワークフォーマーとなり、その含有量
は１５〜５０％、好ましくは２０〜４５％である。Ｔｉ
Ｏ2 が１５％より少ないと析出結晶量が少なくなって比
誘電率が低下するとともに焼成体の強度が低下し、５０
％より多いとガラス成形時に失透し易くなる。TiO 2 is also a component for increasing the relative dielectric constant and a component for the precipitated crystals. Further, it becomes a glass network former like SiO 2, and its content is 15 to 50%, preferably 20 to 45%. Ti
When O 2 is less than 15%, the amount of precipitated crystals decreases, the relative permittivity decreases, and the strength of the fired body decreases.
%, The glass tends to devitrify during glass forming.
【００１６】ＲＯ（ＢａＯ、ＣａＯ、ＳｒＯ等のアルカ
リ土類金属酸化物）も比誘電率を高める成分であるとと
もに析出結晶の構成成分となり、その含有量は合量で３
〜４５％、好ましくは５〜３５％である。ＲＯが３％よ
り少ないと析出結晶が少なくなって比誘電率が低下する
とともに焼成体の強度が低下し、また溶解性が悪くな
る。ＲＯが４５％より多いとガラス成形時に失透し易く
なる。RO (alkaline earth metal oxide such as BaO, CaO, SrO) is also a component for increasing the relative dielectric constant and a component for the precipitated crystals, and its content is 3 in total.
~ 45%, preferably 5-35%. When the RO content is less than 3%, the number of precipitated crystals decreases, the relative dielectric constant decreases, the strength of the fired body decreases, and the solubility deteriorates. If RO is more than 45%, devitrification tends to occur during glass forming.
【００１７】なおＲＯの各成分は、ＢａＯ ３〜３５
％、ＣａＯ ０〜１５％、ＳｒＯ ０〜１５％の範囲で
あることが好ましく、特にＢａＯ ５〜３０％、ＣａＯ
０〜１０％、ＳｒＯ ０〜１０％であることが望まし
い。Each component of RO is BaO 3 to 35.
%, CaO 0 to 15%, SrO 0 to 15%, preferably BaO 5 to 30%, CaO.
It is desirable that they are 0 to 10% and SrO 0 to 10%.
【００１８】ＺｎＯは析出結晶量を増加させるとともに
溶解性を向上させる成分であり、その含有量は０．１〜
２５％、好ましくは１〜２０％である。ＺｎＯが０．１
％より少ないと結晶の析出量が不十分になるとともに溶
解性が低下し、２５％より多いとガラス成形時に失透し
易くなる。ZnO is a component that increases the amount of precipitated crystals and improves the solubility, and the content thereof is 0.1-0.1%.
It is 25%, preferably 1 to 20%. ZnO is 0.1
If it is less than 25%, the amount of precipitated crystals becomes insufficient and the solubility decreases, and if it exceeds 25%, devitrification tends to occur during glass forming.
【００１９】ＰｂＯは比誘電率を高めるとともに溶解性
を向上させる成分であり、その含有量は０〜３０％、好
ましくは０〜２５％である。ＰｂＯが３０％より多いと
析出結晶量が少なくなって焼結体の強度が低下する。PbO is a component that increases the relative permittivity and the solubility, and its content is 0 to 30%, preferably 0 to 25%. When PbO is more than 30%, the amount of precipitated crystals decreases and the strength of the sintered body decreases.
【００２０】Ｂｉ2 Ｏ3 もＰｂＯと同様に比誘電率を高
めるとともに溶解性を向上させる成分であり、その含有
量は０〜３０％、好ましくは０〜２５％である。Ｂｉ2
Ｏ3が３０％より多いと析出結晶量が少なくなって焼結
体の強度が低下する。Like PbO, Bi 2 O 3 is also a component that enhances the relative permittivity and solubility, and the content thereof is 0 to 30%, preferably 0 to 25%. Bi 2
If O 3 is more than 30%, the amount of precipitated crystals decreases and the strength of the sintered body decreases.
【００２１】ＺｒＯ2 はガラスの化学的耐久性を高める
成分であり、その含有量は０〜２５％、好ましくは０〜
２０％である。ＺｒＯ2 が２５％より多いと溶解性が悪
くなる。ZrO 2 is a component that enhances the chemical durability of glass, and its content is 0 to 25%, preferably 0 to 25%.
20%. If ZrO 2 is more than 25%, the solubility becomes poor.
【００２２】本発明において使用するセラミックス粉末
としては、高い比誘電率、低い誘電損失の材料であれば
種々のものが使用できる。特に１ＧＨｚにおける比誘電
率が９以上、且つ、誘電損失が２０×１０-4以下のセラ
ミックス材料を使用することが好ましい。As the ceramic powder used in the present invention, various materials can be used as long as they have a high relative dielectric constant and a low dielectric loss. Particularly, it is preferable to use a ceramic material having a relative permittivity of 9 or more at 1 GHz and a dielectric loss of 20 × 10 −4 or less.
【００２３】このようなセラミックス材料の好適な例と
して、Ａｌ2 Ｏ3 、ＺｒＯ2 、ＺｒＳｉＯ4 、ＺｒＴｉ
Ｏ4 、ＴｉＯ2 、ＢａＴｉ4 Ｏ9 やＢａ2 Ｔｉ9 Ｏ20や
ＣａＴｉＯ3 やＳｒＴｉＯ3 等のＲＯ−ＴｉＯ2 系セラ
ミック、Ｎｄ4 Ｔｉ9 Ｏ24やＬａ4 Ｔｉ9 Ｏ24等のＬｎ
2 Ｏ3 −ＴｉＯ2 系セラミック、及びＢａＮｄ2 Ｔｉ5
Ｏ14やＳｒＰｒ2 Ｔｉ3 Ｏ10等のＲＯ−Ｌｎ2 Ｏ3 −Ｔ
ｉＯ2 系セラミックの群より選択された１種又は２種以
上組み合わせて使用することができる。Suitable examples of such ceramic materials include Al 2 O 3 , ZrO 2 , ZrSiO 4 , and ZrTi.
RO-TiO 2 based ceramics such as O 4 , TiO 2 , BaTi 4 O 9 , Ba 2 Ti 9 O 20 , CaTiO 3 and SrTiO 3 , Ln such as Nd 4 Ti 9 O 24 and La 4 Ti 9 O 24.
2 O 3 —TiO 2 system ceramic, and BaNd 2 Ti 5
O 14 and SrPr 2 Ti 3 O 10, etc. RO-Ln 2 O 3 -T
They can be used alone or in combination of two or more selected from the group of iO 2 -based ceramics.
【００２４】[0024]
【作用】本発明のガラスセラミックス誘電体材料は、焼
成することによりガラス中からＢａ2 Ｔｉ9 Ｏ20、Ｃａ
ＴｉＯ3 、ＳｒＴｉＯ3 等のＲＯ−ＴｉＯ2 系結晶や、
Ｌａ4 Ｔｉ9 Ｏ24、Ｎｄ4 Ｔｉ9 Ｏ24等のＬｎ2 Ｏ3 −
ＴｉＯ2 系結晶や、ＳｒＰｒ2 Ｔｉ3 Ｏ10、ＢａＮｄ2
Ｔｉ5 Ｏ14等のＲＯ−Ｌｎ2 Ｏ3 −ＴｉＯ2 系結晶が析
出する。さらにこれらの系の結晶中にＰｂＯやＢｉ2 Ｏ
3 が含まれる場合もある。上記各結晶は、高い比誘電
率、低い誘電損失及び高い機械的強度を有するため、こ
れらの特性に優れた焼成体を得ることができる。The glass-ceramic dielectric material of the present invention can be baked to remove Ba 2 Ti 9 O 20 and Ca from the glass.
TiO 3, RO-TiO 2 system such SrTiO 3 crystal and,
La 4 Ti 9 O 24 , Nd 4 Ti 9 O 24, etc. Ln 2 O 3 −
TiO 2 type crystals, SrPr 2 Ti 3 O 10 , BaNd 2
Ti 5 O 14, etc. RO-Ln 2 O 3 -TiO 2 based crystal is precipitated. Furthermore, in the crystals of these systems, PbO and Bi 2 O
May include 3 . Since each crystal has a high relative dielectric constant, a low dielectric loss, and a high mechanical strength, it is possible to obtain a fired body excellent in these characteristics.
【００２５】[0025]
【実施例】以下、本発明のガラスセラミックス誘電体材
料を実施例に基づき説明する。EXAMPLES The glass ceramic dielectric material of the present invention will be described below based on examples.
【００２６】表１は、本実施例で使用するガラス粉末
（試料Ａ〜Ｆ）を示すものである。Table 1 shows glass powders (Samples A to F) used in this example.
【００２７】[0027]
【表１】 [Table 1]
【００２８】表１のガラス試料は以下のように調製し
た。The glass samples in Table 1 were prepared as follows.
【００２９】まず原料として、純珪粉、酸化ランタン、
酸化セリウム、酸化プラセオジウム、酸化ネオジウム、
酸化チタン、炭酸バリウム、炭酸カルシウム、炭酸スト
ロンチウム、酸化亜鉛、酸化鉛、酸化ビスマス、酸化ジ
ルコニウムを準備し、表中の各組成となるように原料を
調合した後、白金坩堝に入れて１４００〜１５００℃で
３〜６時間溶融してから、水冷ローラーによって薄板状
に成形した。次いでこの成形体を粗砕した後、水を加え
てボールミルにより湿式粉砕し、平均粒径が１．５〜
３．０μｍの粉末とした。First, as raw materials, pure silica powder, lanthanum oxide,
Cerium oxide, praseodymium oxide, neodymium oxide,
Titanium oxide, barium carbonate, calcium carbonate, strontium carbonate, zinc oxide, lead oxide, bismuth oxide, zirconium oxide are prepared, and the raw materials are mixed so as to have the respective compositions in the table, and then placed in a platinum crucible and 1400 to 1500. After being melted at 3 ° C. for 3 to 6 hours, it was formed into a thin plate by a water-cooled roller. Next, after crushing this molded body roughly, water is added and wet crushed by a ball mill to obtain an average particle size of 1.5 to
The powder was 3.0 μm.
【００３０】こうして得られたガラス粉末は、１ＧＨｚ
の周波数で１５．９〜１８．６の比誘電率と１３〜２０
×１０-4の誘電損失を有していた。The glass powder thus obtained has a frequency of 1 GHz.
At a frequency of 15.9 to 18.6 and a dielectric constant of 13 to 20
It had a dielectric loss of × 10 -4 .
【００３１】また表２は、本実施例で使用するセラミッ
クス粉末（試料ａ〜ｇ）を示すものである。Table 2 shows the ceramic powder (samples a to g) used in this example.
【００３２】[0032]
【表２】 [Table 2]
【００３３】表２中、試料ａのＡｌ2 Ｏ3 と試料ｂのＺ
ｒＯ2 は市販品を使用した。またそれ以外のセラミック
ス粉末は、原料として酸化ジルコニウム、純珪粉、酸化
チタン、炭酸バリウム、酸化ネオジウムを準備し、表２
のセラミックスとなるように各原料を調合した後、水を
加えてボールミルにより２４時間湿式混合し、次いで乾
燥させてから、表中の焼成条件で焼成し、この焼成物を
ボールミルで平均粒径が１．５〜３．０μｍになるまで
粉砕することによって作製した。In Table 2, Al 2 O 3 of sample a and Z of sample b
A commercially available product was used as rO 2 . For other ceramic powders, zirconium oxide, pure silica powder, titanium oxide, barium carbonate, and neodymium oxide were prepared as raw materials, and Table 2
After each raw material was blended so as to obtain the above-mentioned ceramics, water was added and wet-mixed in a ball mill for 24 hours, followed by drying and then firing under the firing conditions shown in the table. It was prepared by pulverizing to 1.5 to 3.0 μm.
【００３４】こうして得られたセラミックス粉末は、１
ＧＨｚの周波数で、９．０〜１００．０の比誘電率と、
０．５〜８．０×１０-4の誘電損失を有していた。The ceramic powder thus obtained has 1
A relative permittivity of 9.0 to 100.0 at a frequency of GHz,
It had a dielectric loss of 0.5 to 8.0 × 10 −4 .
【００３５】表３、４は、表１のガラス粉末と、表２の
セラミックス粉末とを混合して作製したガラスセラミッ
クス誘電体材料（試料Ｎｏ．１〜１６）を示すものであ
る。Tables 3 and 4 show glass-ceramic dielectric materials (Sample Nos. 1 to 16) produced by mixing the glass powder of Table 1 and the ceramic powder of Table 2.
【００３６】[0036]
【表３】 [Table 3]
【００３７】[0037]
【表４】 [Table 4]
【００３８】これらのガラスセラミック誘電体材料から
なるグリーンシートを作製し、その複数枚を積層し焼結
させる方法を以下に述べる。A method for producing a green sheet made of these glass ceramic dielectric materials, laminating a plurality of the green sheets and sintering them will be described below.
【００３９】まずガラス粉末とセラミック粉末を表中の
割合で混合した後、所定量の結合剤、可塑剤及び溶剤を
添加してスラリーを調製する。結合剤としては、例えば
ポリビニルブチラール樹脂、メタアクリル酸樹脂等、可
塑剤としては、例えばフタル酸ジブチル等、溶剤として
は、例えばトルエン、メチルエチルケトン等を使用する
ことができる。First, glass powder and ceramic powder are mixed in the ratios shown in the table, and then a predetermined amount of binder, plasticizer and solvent are added to prepare a slurry. As the binder, for example, polyvinyl butyral resin, methacrylic acid resin, etc., as the plasticizer, for example, dibutyl phthalate, etc., and as the solvent, for example, toluene, methyl ethyl ketone, etc. can be used.
【００４０】次いで上記のスラリーをポリエステルフィ
ルム上にドクターブレード法によって塗布し、厚みが約
０．２ｍｍのグリーンシートを作製する。その後、この
グリーンシートを乾燥させ、所定寸法に切断してから、
機械的加工を施してスルーホールを形成し、導体や電極
となる低抵抗金属材料をスルーホール及びグリーンシー
ト表面に印刷する。次いでこのようなグリーンシートの
複数枚を積層し、熱圧着によって一体化する。Then, the above slurry is applied onto a polyester film by a doctor blade method to prepare a green sheet having a thickness of about 0.2 mm. After that, dry this green sheet, cut it to a predetermined size,
A through hole is formed by mechanical processing, and a low resistance metal material serving as a conductor or an electrode is printed on the surface of the through hole and the green sheet. Then, a plurality of such green sheets are laminated and integrated by thermocompression bonding.
【００４１】このようにして得た積層グリーンシート
を、約３℃／分の速度で約５００℃まで昇温し、この温
度で約３０分保持することによってグリーンシート中の
有機物質を除去する。その後、約１０℃／分の速度で表
中の焼成温度まで昇温し、その温度で表中の焼成時間保
持して焼結させる。The laminated green sheet thus obtained is heated to about 500 ° C. at a rate of about 3 ° C./minute and kept at this temperature for about 30 minutes to remove the organic substances in the green sheet. After that, the temperature is raised to the firing temperature in the table at a rate of about 10 ° C./min, and the temperature is maintained for the firing time for sintering.
【００４２】表３、４から明らかなように、実施例の各
試料は、９００℃の低温で焼成可能であり、得られた焼
成体は１ＧＨｚの周波数で２０．４〜５８．７の比誘電
率と１２〜２０×１０-4の誘電損失を有していた。しか
も曲げ強度が１８００ｋｇ／ｃｍ2以上と高く、熱膨張
係数が８１〜９０×１０-7／℃であった。As is clear from Tables 3 and 4, each sample of the examples can be fired at a low temperature of 900 ° C., and the obtained fired body has a relative dielectric constant of 20.4 to 58.7 at a frequency of 1 GHz. And a dielectric loss of 12 to 20 × 10 -4 . Moreover, the bending strength was as high as 1800 kg / cm 2 or more, and the thermal expansion coefficient was 81 to 90 × 10 -7 / ° C.
【００４３】なお、表中の比誘電率と誘電損失は、イン
ピーダンスアナライザーを使用し、２５℃の温度での値
を求めた。熱膨張係数は、石英押棒式のディラトメータ
ーを使用して測定した。また軟化点は、周知のファイバ
ー法によって測定した。さらに曲げ強度は、１０×４５
×１ｍｍの大きさとなるように作製した焼成体を３点荷
重測定法によって測定した。The values of relative permittivity and dielectric loss in the table were obtained at a temperature of 25 ° C. using an impedance analyzer. The thermal expansion coefficient was measured using a quartz push rod type dilatometer. The softening point was measured by the well-known fiber method. Furthermore, bending strength is 10 × 45
The fired body produced so as to have a size of × 1 mm was measured by a three-point load measuring method.
【００４４】また実施例では、本発明のガラスセラミッ
クの製造方法として、グリーンシートの例を挙げたが、
本発明はこれに限定されるものではなく、一般にセラミ
ックの製造に用いられる各種の方法を適用することが可
能である。In the embodiment, the example of the green sheet is given as the method for producing the glass ceramic of the present invention.
The present invention is not limited to this, and various methods generally used for manufacturing ceramics can be applied.
【００４５】[0045]
【発明の効果】以上のように本発明のガラスセラミック
ス誘電体材料は、１０００℃以下の低温で焼成すること
が可能であり、電極や導体材料として銀や銅を使用する
ことができる。またマイクロ波領域の周波数において高
い比誘電率と低い誘電損失を有し、しかも耐熱性と機械
的強度が高いため、マイクロ波用回路部品材料として好
適である。As described above, the glass-ceramic dielectric material of the present invention can be fired at a low temperature of 1000 ° C. or lower, and silver or copper can be used as an electrode or a conductor material. Further, it has a high relative permittivity and a low dielectric loss at frequencies in the microwave region, and has high heat resistance and high mechanical strength, so that it is suitable as a microwave circuit component material.
Claims (2)
セラミックス粉末６０〜１０％からなり、該ガラス粉末
がＳｉＯ2 １０〜３５％、Ｌｎ2 Ｏ3 （ランタノイド系
酸化物） ５〜３５％、ＴｉＯ2 １５〜５０％、ＲＯ
（アルカリ土類金属酸化物） ３〜４５％、ＺｎＯ
０．１〜２５％、ＰｂＯ ０〜３０％、Ｂｉ2 Ｏ3 ０〜
３０％、ＺｒＯ2 ０〜２５％からなることを特徴とする
ガラスセラミックス誘電体材料。1. Glass powder 40-90% by weight percentage,
The ceramic powder is composed of 60 to 10%, and the glass powder is SiO 2 10 to 35%, Ln 2 O 3 (lanthanoid oxide) 5 to 35%, TiO 2 15 to 50%, and RO.
(Alkaline earth metal oxide) 3 to 45%, ZnO
0.1-25%, PbO 0-30%, Bi 2 O 3 0-
A glass-ceramic dielectric material comprising 30% and ZrO 2 0 to 25%.
比誘電率９以上、且つ、誘電損失２０×１０-4以下のセ
ラミックス材料からなることを特徴とする請求項１のガ
ラスセラミックス誘電体材料。2. The glass-ceramic dielectric material according to claim 1, wherein the ceramic powder is made of a ceramic material having a relative dielectric constant of 9 or more at 1 GHz and a dielectric loss of 20 × 10 −4 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09438695A JP3624408B2 (en) | 1995-03-27 | 1995-03-27 | Glass ceramic dielectric material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09438695A JP3624408B2 (en) | 1995-03-27 | 1995-03-27 | Glass ceramic dielectric material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08259265A true JPH08259265A (en) | 1996-10-08 |
| JP3624408B2 JP3624408B2 (en) | 2005-03-02 |
Family
ID=14108855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09438695A Expired - Fee Related JP3624408B2 (en) | 1995-03-27 | 1995-03-27 | Glass ceramic dielectric material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3624408B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009013062A (en) * | 2001-08-02 | 2009-01-22 | Three M Innovative Properties Co | Glass containing at least two kinds of metal oxides comprising tio2 and la2o3, or tio2 and bao, method for manufacturing article containing the glass, and glass article manufactured by the manufacturing method |
-
1995
- 1995-03-27 JP JP09438695A patent/JP3624408B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009013062A (en) * | 2001-08-02 | 2009-01-22 | Three M Innovative Properties Co | Glass containing at least two kinds of metal oxides comprising tio2 and la2o3, or tio2 and bao, method for manufacturing article containing the glass, and glass article manufactured by the manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3624408B2 (en) | 2005-03-02 |
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