JPS6054257B2 - dielectric porcelain material - Google Patents
dielectric porcelain materialInfo
- Publication number
- JPS6054257B2 JPS6054257B2 JP53150231A JP15023178A JPS6054257B2 JP S6054257 B2 JPS6054257 B2 JP S6054257B2 JP 53150231 A JP53150231 A JP 53150231A JP 15023178 A JP15023178 A JP 15023178A JP S6054257 B2 JPS6054257 B2 JP S6054257B2
- Authority
- JP
- Japan
- Prior art keywords
- dielectric
- porcelain
- dielectric porcelain
- porcelain material
- present
- 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
Links
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- Compositions Of Oxide Ceramics (AREA)
- Ceramic Capacitors (AREA)
- Inorganic Insulating Materials (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Description
【発明の詳細な説明】 本発明は誘電体磁器材料、特にＢａＯ、Ｎａ。[Detailed description of the invention] The present invention relates to dielectric ceramic materials, particularly BaO and Na.
Ｏ、Ｎｂ、Ｏ、、ＣａＯおよびＺｒ０。の成分で構成さ
れる誘電体磁器材料に関するものであり、誘電体Ｅと無
負荷Ｑか大きく、かつ共振周波数の温度安定度Ｔｌに優
れたマイクロ波用誘電体共振器を構成できる材料を提供
しようとするものである。従来から、マイクロ波領域に
おいて、誘電体は、マイクロ波回路のインピーダンス整
合や、誘電体共振器などに応用されてきている。O, Nb, O, , CaO and Zr0. The present invention relates to a dielectric ceramic material composed of the following components, and provides a material capable of constructing a dielectric resonator for microwaves that has a large dielectric E and an unloaded Q, and has excellent temperature stability Tl of the resonant frequency. That is. Conventionally, in the microwave region, dielectrics have been applied to impedance matching of microwave circuits, dielectric resonators, and the like.
近年、特に、マイクロ波回路の集積化の技術が進歩する
にともない、発振器の周波数の安定化などに、高誘電率
、低損失、低価格の誘電体磁器を使用して小形化するこ
とが積極的に進められている。従来、これらの誘電体材
料としては、ＢａＯ−ＴｉＯ。系磁器、およびその一部
を他の元素で置換した磁器、さらには誘電率が負の温度
変化をもつＴｉ０。と正１−：：｝瓢ｃｍ、−”−ー】
Ｊ−ｊＬ、、−１ト４ト 、１Ｊヨーー 警 ゛ ：
シ｛＝鵞 ｊ−゛一ーー”、一、せたものを使用する場
合が多い。しかし、これらは、誘電体損失が大きかつた
り、誘電率の温度変化のばらつきが大きかつたり、共振
周波数の安定度が大きすぎたりして、実用上問題が多い
。In recent years, especially as the integration technology of microwave circuits has progressed, there has been an active effort to use dielectric ceramics with high dielectric constant, low loss, and low cost to stabilize the frequency of oscillators and to miniaturize them. progress is being made. Conventionally, these dielectric materials include BaO-TiO. system porcelain, porcelain in which part of it is replaced with other elements, and Ti0 whose dielectric constant changes negatively with temperature. and positive 1-::｝瓢cm,-”-]
J-jL, -1 to 4 to, 1J yo police ゛:
However, these have large dielectric loss, large variations in temperature change in dielectric constant, and low resonant frequency. The stability of this method is too high, which poses many practical problems.
出願人において、これらの欠点のない材料について、種
々検討した結果、一般式ｘＢａＯ、ｙＮａ２Ｏ−ＺＮｂ
２Ｏ５で表わされる組成において０．５９３＜−ｘ＜、
０．７６２１０．０４≦ｙ≦０．１３、０．１７４≦ｚ
≦０．３２、ｘ＋ｙ＋ｚ＝１の範囲内にある組成の磁器
が、優れた誘電体マイクロ波共振器になることを見出し
た（特開昭５３−３５４５６号）。As a result of various studies on materials free from these drawbacks, the applicant has found that the general formula xBaO, yNa2O-ZNb
In the composition expressed by 2O5, 0.593<-x<,
0.76210.04≦y≦0.13, 0.174≦z
It has been found that porcelain having a composition within the range of ≦0.32 and x+y+z=1 can be used as an excellent dielectric microwave resonator (Japanese Patent Application Laid-Open No. 53-35456).
しカルながら、これは共振周波数の温度安定度丁、がか
なり大きくＱも低いものであり、その安定度およびＱを
向上させるための研究を進めた。本発明はその結果にも
とづくものである。本発明にかかる誘電体共振器用材料
は、ＢａＯ、Ｎａ、Ｏ、およびＮｂ、ｑさらにＣａＯ、
Ｚｒ０。However, the temperature stability of the resonance frequency is quite high and the Q is low, so we conducted research to improve the stability and Q. The present invention is based on that result. The dielectric resonator material according to the present invention includes BaO, Na, O, and Nb, q, and also CaO,
Zr0.
とを加えることによつて、無負荷Ｑと誘電率を低下させ
ることなく、共振周波数の温度安定度Ｔｌを向上させる
ことができたものである。その特徴とするところは、（
１−ｗ）（ｘＢａ０−ｙＮａ２０−ＺＮｂ２０５）＋ｗ
Ｃａ０−Ｚｒ０。なる組成において０．５９３＜、ｘ＜
、０．７６２、０．０４＜、ｙ≦０．１３１０．１７４
＜、ｚくＯ、３２、ｘ＋、ｙ＋ｚ＝１、０＜ｗ＜、０．
９５の範囲内にある組成を有することを特徴とする。以
下、実施例にもとづいて、本発明を説明する。By adding this, it was possible to improve the temperature stability Tl of the resonant frequency without reducing the no-load Q and the dielectric constant. Its characteristics are (
1-w) (xBa0-yNa20-ZNb205)+w
Ca0-Zr0. 0.593<, x<
,0.762,0.04<,y≦0.1310.174
<,zkuO,32,x+,y+z=1,0<w<,0.
It is characterized by having a composition within the range of 95%. Hereinafter, the present invention will be explained based on Examples.
まずＢａＣＯ３，Ｎａ２ＣＯ３，Ｎｂ２Ｏ５，ＣａＣＯ
３およびＺｒＯ２の出発原料を各組成に応じて秤量し、
めのうボールを備え、かつゴム内張りしたボールミで純
水とともに湿式混合した。First, BaCO3, Na2CO3, Nb2O5, CaCO
Weigh the starting materials of 3 and ZrO2 according to each composition,
Wet mixing was carried out with pure water using a ball mill equipped with an agate ball and lined with rubber.
この混合物を乾燥させてから、空気中において１２００
℃で５時間仮焼した後、前記ボールミルで湿式粉砕した
。得られた粉砕泥しようをボールミルから取出して、乾
燥させた後、圧力７００ｋ９／Ｃｌｔで直径２５？の円
板状に成形し、それを空気中において所定の温度で２時
間焼成して、下表に示す組成の磁器を得た。それから、
各磁器から、それぞれ直径５Ｔ！０Ｒ１厚さ２顛の寸法
の円板形磁器の試料を切出し、それをマイクロ波用誘電
体共振器に使用して、トラップ法により共振周波数を測
定し、この共振周波数（ほぼ１１ＧＨｚ）と直径とから
誘電体Ｅを、また帯域反射法により無負荷Ｑ（Ｑｕ）を
測定した。This mixture was dried and then placed in air for 1200 min.
After calcining at ℃ for 5 hours, it was wet-pulverized in the ball mill. The obtained pulverized slurry was taken out from the ball mill, dried, and then applied to a pressure of 700 k9/Clt with a diameter of 25 mm. This was molded into a disk shape and fired in air at a predetermined temperature for 2 hours to obtain porcelain having the composition shown in the table below. after that,
Each piece of porcelain has a diameter of 5T! A disk-shaped porcelain sample with dimensions of 0R1 thickness 2 pieces was cut out, used in a microwave dielectric resonator, and the resonant frequency was measured using the trap method. The unloaded Q (Qu) was measured by the band reflection method.
共振周波数の温度安定度τ，は、温度槽に各試料を入れ
、−３（代）から＋７（代）の温度変化におけるトラッ
プ周波数の変化を測定して求めた。その結果を下表に示
す。Ｗ，ｘ，ｙ，ｚは次式の組成比率を示す。The temperature stability τ of the resonance frequency was determined by placing each sample in a temperature bath and measuring the change in the trap frequency when the temperature changed from -3 (range) to +7 (range). The results are shown in the table below. W, x, y, and z represent the composition ratio of the following formula.
ただし＊は比較例
表より明らかなように、本発明の誘電体磁器材料は、マ
イクロ波領域において、無負荷Ｑが大きく、誘電率が比
較的大きく、さらに共振周波数の温度安定度の改善され
た優れたものてあることがわかる。However, as is clear from the comparative example table, the dielectric ceramic material of the present invention has a large no-load Q, a relatively large dielectric constant, and improved temperature stability of the resonant frequency in the microwave region. It turns out that there are some excellent ones out there.
本発明の範囲外の組成の試料６，７は、磁器への焼結が
よくなく、誘電体共振器として利用するに十分な機械的
強度をもつ磁器とならず、また、試料１２は誘電体と共
振周波数の温度変化が大きくかつＱが低いので、本発明
の範囲から除いた。Samples 6 and 7 with compositions outside the scope of the present invention did not sinter well into porcelain and did not have sufficient mechanical strength to be used as a dielectric resonator. Since the temperature change of the resonant frequency is large and the Q is low, it is excluded from the scope of the present invention.
Claims (1)
ｂ＿２Ｏ＿５〕＋ｗＣａＯ・ＺｒＯ＿２で表わされる組
成において０．５９３≦ｘ≦０．７６２、０．０４≦ｙ
≦０．１３、０．１７４≦ｚ≦０．３２、ｘ＋ｙ＋ｚ＝
１、０＜ｗ≦０．９５の範囲内にある組成であることを
特徴とする誘電体磁器材料。[Claims] 1 General formula (1-w) [xBaO・yNa_2O・zN
b_2O_5]+wCaO・ZrO_2 0.593≦x≦0.762, 0.04≦y
≦0.13, 0.174≦z≦0.32, x+y+z=
1. A dielectric ceramic material characterized by having a composition within the range of 0<w≦0.95.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53150231A JPS6054257B2 (en) | 1978-12-04 | 1978-12-04 | dielectric porcelain material |
| CA340,925A CA1134128A (en) | 1978-12-04 | 1979-11-29 | Dielectric ceramics |
| GB7941688A GB2040909B (en) | 1978-12-04 | 1979-12-03 | Dielectric ceramics |
| US06/099,724 US4248727A (en) | 1978-12-04 | 1979-12-04 | Dielectric ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53150231A JPS6054257B2 (en) | 1978-12-04 | 1978-12-04 | dielectric porcelain material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5575966A JPS5575966A (en) | 1980-06-07 |
| JPS6054257B2 true JPS6054257B2 (en) | 1985-11-29 |
Family
ID=15492405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53150231A Expired JPS6054257B2 (en) | 1978-12-04 | 1978-12-04 | dielectric porcelain material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6054257B2 (en) |
-
1978
- 1978-12-04 JP JP53150231A patent/JPS6054257B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5575966A (en) | 1980-06-07 |
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