JPS642383A - Manufacture of piezoelectric porcelain - Google Patents
Manufacture of piezoelectric porcelainInfo
- Publication number
- JPS642383A JPS642383A JP15739887A JP15739887A JPS642383A JP S642383 A JPS642383 A JP S642383A JP 15739887 A JP15739887 A JP 15739887A JP 15739887 A JP15739887 A JP 15739887A JP S642383 A JPS642383 A JP S642383A
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric porcelain
- executed
- thermal shock
- sec
- curie point
- 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.)
- Granted
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
PURPOSE: To obtain piezoelectric porcelain, characteristics of which are hardly deteriorated by a thermal shock cycle, by thermally treating the piezoelectric porcelain, to which polarization is executed, in a short time at a temperature close to the Curie point.
CONSTITUTION: Approximately 0.5% MnO2 is added to a Pb-Ti-Zr oxide, one part of which is replaced with La, Ni or W, and sintered, and a DC electric field at 4kV/mm is applied for thirty sec at 80°C and polarization treatment is executed. The polarized mixture is aged, and thermally treated for five or ten sec in air at 290°C extremely close to the Curie point. Demagnetization is performed by the treatment, and a coupling coefficient is lowered slightly, but piezoelectric porcelain displaying characteristics stable to a thermal shock cycle are acquired.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15739887A JPS642383A (en) | 1987-06-24 | 1987-06-24 | Manufacture of piezoelectric porcelain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15739887A JPS642383A (en) | 1987-06-24 | 1987-06-24 | Manufacture of piezoelectric porcelain |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH012383A JPH012383A (en) | 1989-01-06 |
| JPS642383A true JPS642383A (en) | 1989-01-06 |
| JPH0465557B2 JPH0465557B2 (en) | 1992-10-20 |
Family
ID=15648760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15739887A Granted JPS642383A (en) | 1987-06-24 | 1987-06-24 | Manufacture of piezoelectric porcelain |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS642383A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194473A (en) * | 1989-05-26 | 1993-03-16 | Mitsui Toatsu Chemicals, Inc. | Modified polyester composition and preparation process and use thereof |
| EP1519427A3 (en) * | 2003-09-24 | 2006-04-19 | TDK Corporation | Piezoelectric ceramic composition and manufacturing the same, and piezoelectric element |
| US7041713B2 (en) | 2000-04-28 | 2006-05-09 | Gunze Limited | Artificial dura mater |
-
1987
- 1987-06-24 JP JP15739887A patent/JPS642383A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194473A (en) * | 1989-05-26 | 1993-03-16 | Mitsui Toatsu Chemicals, Inc. | Modified polyester composition and preparation process and use thereof |
| US7041713B2 (en) | 2000-04-28 | 2006-05-09 | Gunze Limited | Artificial dura mater |
| EP1519427A3 (en) * | 2003-09-24 | 2006-04-19 | TDK Corporation | Piezoelectric ceramic composition and manufacturing the same, and piezoelectric element |
| US7608215B2 (en) | 2003-09-24 | 2009-10-27 | Tdk Corporation | Method of manufacturing a piezoelectric ceramic composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0465557B2 (en) | 1992-10-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |