JPS6048120B2 - Method for manufacturing laminated piezoelectric porcelain - Google Patents
Method for manufacturing laminated piezoelectric porcelainInfo
- Publication number
- JPS6048120B2 JPS6048120B2 JP53084484A JP8448478A JPS6048120B2 JP S6048120 B2 JPS6048120 B2 JP S6048120B2 JP 53084484 A JP53084484 A JP 53084484A JP 8448478 A JP8448478 A JP 8448478A JP S6048120 B2 JPS6048120 B2 JP S6048120B2
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric
- porcelain
- sintered body
- layer
- ceramic
- 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
- 229910052573 porcelain Inorganic materials 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title description 8
- 239000000919 ceramic Substances 0.000 claims description 19
- 230000010287 polarization Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000005245 sintering Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000004913 activation Effects 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
- 235000013339 cereals Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【発明の詳細な説明】
本発明は、積層状圧電性磁器の製造方法に関するもので
、圧電性組成物の焼結において、２種類の異なる圧電性
組成物の粉体を積層して加圧成形し、そのまま所定の温
度で焼結して積層状圧電性磁器を得る方法を供給する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing laminated piezoelectric porcelain, in which powders of two different piezoelectric compositions are laminated and pressure-molded in the sintering of the piezoelectric composition. The present invention provides a method for obtaining laminated piezoelectric porcelain by sintering the same at a predetermined temperature.
通常の圧電磁器は、２成分系または３成分系の圧電組成
物をそれぞれ利用目的に応じて改良し、あるいはその特
徴を見いだして利用されている。分日、圧電性磁器を利
用した部品は数多く、テレビジョン受像機やラジオ受信
機等に使用されるセラミックフィルタ等はその代表例で
あり、最近では、コスト低減と同時に小型化、高性能化
の要望が強くなり、圧電性磁器の特質の活用を広く検討
されている。本発明はこれらの要望に適するもので、す
でに・゛１−一 −ｒＴ’甲、！Ｊ１−研ュ！田゛−１
９話籾のｑ力令工甲雷拌磁器を窯業的に結合した積層状
圧電性磁器を得ようというものである。Conventional piezoelectric ceramics are utilized by improving two-component or three-component piezoelectric compositions depending on the purpose of use, or by discovering their characteristics. Today, there are many parts that use piezoelectric porcelain, and ceramic filters used in television receivers, radio receivers, etc. are a typical example. Due to growing demand, the use of the properties of piezoelectric porcelain is being widely considered. The present invention is suitable for these demands, and has already achieved the following: 1-1-rT'A! J1-Kenyu! Ta-1
Episode 9: The aim is to obtain laminated piezoelectric porcelain by combining rice grain porcelain in a ceramic manner.
すなわち、積層状圧電磁器を分極し、熱処理によつて、
分極が除去されたンデンサ磁器層と、圧電性磁器層を同
時に得、セラミックフィルタ等のコスト低減と小型化、
高性能化を図ろうとするものである。以下、本発明の方
法によつて得られる磁器について、第１図を用いて説明
する。That is, by polarizing the laminated piezoelectric ceramic and heat-treating it,
By simultaneously obtaining a depolarized ceramic layer and a piezoelectric ceramic layer, cost reduction and miniaturization of ceramic filters, etc.
This is an attempt to improve performance. Hereinafter, the porcelain obtained by the method of the present invention will be explained using FIG.
図において、１０は積層状圧電性磁器を示し、圧電磁器
Ａにそれよりキュリー温度の高い圧電磁器Ｂが窯業的に
結合されている。焼結後の磁器面に分極に必要な電極１
、２を設け、圧電的活性化を得るために分極Ｐを行なう
。ここでＡ層およびＢ層は通常の圧電性質を持つた磁器
が得られる。分極後、所定の温９度中に放置すれば、Ａ
層はその温度によつて分極すなわち圧電性が消滅する。
Ｂ層はＡ層より高いキュリー温度特性を持つており、圧
電性はそのまま残留する。このようにキュリー温度が異
なるＡ層およびＢ層を持つた圧電磁器を製造し、熱処理
フを行なうことによつて、焼結体磁器から２種の特性を
持つ磁器が得られる。第２図は積層状圧電性磁器を用い
たセラミックフィルタの応用例を示し、同図ａは３積層
状の圧電性磁器、同図をは複合型フィルタの回路図を示
す。Ａ、Ｚ。は厚みすべ５り振動結合の３端子フィルタ
、ＣはＺ、、４の３端子フィルタ相互間を結合する容量
を示す。２１，２「は入力端子、２２，２２″は出力端
子を示す。In the figure, numeral 10 indicates a laminated piezoelectric ceramic, in which a piezoelectric ceramic A is combined with a piezoelectric ceramic B having a higher Curie temperature than the piezoelectric ceramic B using a ceramic method. Electrode 1 necessary for polarization on the porcelain surface after sintering
, 2 are provided and polarization P is performed to obtain piezoelectric activation. Here, the A layer and the B layer are obtained as porcelain having normal piezoelectric properties. After polarization, if left at the specified temperature of 9 degrees, A
The layer becomes polarized, ie, loses its piezoelectric properties, depending on its temperature.
Layer B has higher Curie temperature characteristics than layer A, and piezoelectricity remains as is. By manufacturing piezoelectric ceramics having layers A and B having different Curie temperatures and subjecting them to heat treatment, porcelain having two types of characteristics can be obtained from sintered porcelain. FIG. 2 shows an application example of a ceramic filter using laminated piezoelectric porcelain, FIG. 2A shows a circuit diagram of a three-layer piezoelectric porcelain, and FIG. A, Z. denotes a three-terminal filter with thickness shear vibration coupling, and C denotes a capacitance coupling between the three-terminal filters Z, , 4. 21 and 2" indicate input terminals, and 22 and 22" indicate output terminals.
本発明の方法について具体的に説明する。The method of the present invention will be specifically explained.
Ａ層として）ＰＹ）０・９６ｓｒ０・０４（ＭｇＪ３Ｎ
Ｙ）２ノ３）０・３７５ｚｒ０．２ぁＴｉＯ．３６Ｏ３
系圧電組成物混合粉体を利用し、Ｂ層として、Ｐｂ（Ｚ
ｎｌｌ３Ｎｂ２ｌ３）。．１２５Ｔ１０．４９ｚｒ０．
３８５＋１Ｗｔ％ＭｎＯ２＋０．５Ｗｔ％Ａｌ２Ｏ３系
圧電組成物混合粉体を用いた。粉体ＡおよびＢを重量比
で１：３の割合に秤量し、巾２０Ｔ！＄Ｌ１長さ３−の
成型金型を用い、成形圧力７００ｋ９１ｃＩｔの条件で
成形した。焼結条件として１２５０゜Ｃ１１時間放置し
、その後は放冷した。焼結後、銀電極塗料を両面に塗布
し、７００℃で焼付けた。圧電活性分極として、１００
′Ｃの油中において、銀電極間に直流電界４ＫＶＩＴ＄
Ｌを印加し、１紛放置した。分極後のキュリー温度を測
定した結果、Ａ層は１９５゜Ｃ．．Ｂ層は３２０℃であ
つた。したがつて、この積層状圧電性磁器で、１つの焼
結体からコンデンサ磁器と圧電性磁器を同時に得るため
には、分極後の熱処理条件を２５０゜Ｃ中で１０２分間
放置とすれば、目的が達成できる。このようにＡ層に用
いる圧電組成物は、終局的にコンデンサとしての機能を
達成すればよく、できるだけキュリー温度が低く、かつ
誘電率の大きい圧電組成物の粉体が望ましい。一方、Ｂ
層は温度によつても圧電的性質が安定で、しかもキュリ
ー温度の高い圧電組成物の粉体が望ましい。このように
、本発明の方法によれば、一つの素体の圧電性磁器で、
分極後簡単な熱処理によつて二つの性質を持つた圧電焼
結体が得られることは、部品点数の削減と、コスト低減
に大きな効果をもたらすと同時に、セラミックフィルタ
等の設計に小型化、高性能化に大きく寄与する。As layer A) PY) 0.96sr0.04 (MgJ3N
Y) 2 no 3) 0.375zr0.2a TiO. 36O3
Pb (Z
nll3Nb2l3). ．． 125T10.49zr0.
A 385+1 Wt% MnO2+0.5 Wt% Al2O3 based piezoelectric composition mixed powder was used. Powders A and B were weighed at a weight ratio of 1:3, and the width was 20T! Molding was carried out using a molding die having a length of $L1 and a length of 3-cm, and a molding pressure of 700 k91 cIt. The sintering conditions were 1250°C for 11 hours, and then allowed to cool. After sintering, silver electrode paint was applied to both sides and baked at 700°C. As piezoelectric active polarization, 100
'C in oil, DC electric field 4KVIT$ between silver electrodes
L was applied and one drop was left. As a result of measuring the Curie temperature after polarization, the temperature of layer A was 195°C. ．． B layer was at 320°C. Therefore, in order to simultaneously obtain capacitor porcelain and piezoelectric porcelain from one sintered body in this laminated piezoelectric porcelain, if the heat treatment conditions after polarization are left at 250°C for 102 minutes, the objective is achieved. can be achieved. In this way, the piezoelectric composition used for layer A only needs to ultimately function as a capacitor, and it is desirable to use a piezoelectric composition powder that has a Curie temperature as low as possible and a high dielectric constant. On the other hand, B
The layer is preferably a powder of a piezoelectric composition whose piezoelectric properties are stable even depending on temperature and whose Curie temperature is high. In this way, according to the method of the present invention, with one element of piezoelectric porcelain,
The fact that a piezoelectric sintered body with two properties can be obtained by a simple heat treatment after polarization has a great effect on reducing the number of parts and cost, and at the same time is useful for designing ceramic filters, etc., which can be made smaller and more expensive. This greatly contributes to improved performance.
第１図は本発明の方法によつて得られる積層状圧電性磁
器の一例を示す斜視図である。
第２図ａは同じく３積層圧電磁器の断面図、同図ｂは同
磁器を用いた複合型セラミックフィルタの応用例を示す
図である。Ａ・・・・・・キュリー温度の低い焼結体層
、Ｂ・・・・・・焼結体層Ａよりもキュリー温度の高い
焼結体層。FIG. 1 is a perspective view showing an example of laminated piezoelectric porcelain obtained by the method of the present invention. FIG. 2a is a sectional view of the same three-layer piezoelectric ceramic, and FIG. 2b is a diagram showing an application example of a composite ceramic filter using the same ceramic. A: Sintered body layer with a low Curie temperature, B: Sintered body layer with a higher Curie temperature than sintered body layer A.
Claims (1)
体を積層し、加圧成形したのち、焼結し、さらに得られ
た焼結体を分極してから、キュリー温度の低い焼結体層
の分極が消滅し、かつキュリー温度の高い焼結体層の分
極が消滅しない熱処理条件で前記焼結体を熱処理するこ
とを特徴とする積層状圧電性磁器の製造方法。1 Powders of two types of piezoelectric ceramic compositions with different Curie temperatures are laminated, pressure-molded, sintered, the obtained sintered body is polarized, and then a sintered body layer with a low Curie temperature is formed. A method for producing a laminated piezoelectric porcelain, characterized in that the sintered body is heat-treated under heat treatment conditions such that the polarization of the sintered body layer disappears and the polarization of the sintered body layer having a high Curie temperature does not disappear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53084484A JPS6048120B2 (en) | 1978-07-10 | 1978-07-10 | Method for manufacturing laminated piezoelectric porcelain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53084484A JPS6048120B2 (en) | 1978-07-10 | 1978-07-10 | Method for manufacturing laminated piezoelectric porcelain |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5511377A JPS5511377A (en) | 1980-01-26 |
| JPS6048120B2 true JPS6048120B2 (en) | 1985-10-25 |
Family
ID=13831917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53084484A Expired JPS6048120B2 (en) | 1978-07-10 | 1978-07-10 | Method for manufacturing laminated piezoelectric porcelain |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048120B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61190820U (en) * | 1985-05-20 | 1986-11-27 | ||
| JPH01178819A (en) * | 1988-01-08 | 1989-07-17 | Ckd Corp | Flow rate sensor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52147584A (en) * | 1976-06-02 | 1977-12-08 | Nissan Motor Co Ltd | Production of exhaust gas treatment catalyst |
| EP0263497B1 (en) * | 1986-10-07 | 1994-05-18 | Canon Kabushiki Kaisha | Image reading device |
| JPH01210036A (en) * | 1988-02-18 | 1989-08-23 | Tanaka Kikinzoku Kogyo Kk | Method for manufacturing carrier supported metal catalyst of large surface area |
-
1978
- 1978-07-10 JP JP53084484A patent/JPS6048120B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61190820U (en) * | 1985-05-20 | 1986-11-27 | ||
| JPH01178819A (en) * | 1988-01-08 | 1989-07-17 | Ckd Corp | Flow rate sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5511377A (en) | 1980-01-26 |
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