GB643448A - Improvements in processes for producing piezo-electric crystals - Google Patents
Improvements in processes for producing piezo-electric crystalsInfo
- Publication number
- GB643448A GB643448A GB23158/46A GB2315846A GB643448A GB 643448 A GB643448 A GB 643448A GB 23158/46 A GB23158/46 A GB 23158/46A GB 2315846 A GB2315846 A GB 2315846A GB 643448 A GB643448 A GB 643448A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- pict
- iii
- plate
- electric field
- 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
- 238000000034 method Methods 0.000 title abstract 3
- 239000013078 crystal Substances 0.000 title 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 8
- 239000000203 mixture Substances 0.000 abstract 5
- 239000003054 catalyst Substances 0.000 abstract 3
- 230000005684 electric field Effects 0.000 abstract 3
- 230000010355 oscillation Effects 0.000 abstract 2
- 239000010453 quartz Substances 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000011045 chalcedony Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- LRCFXGAMWKDGLA-UHFFFAOYSA-N dioxosilane;hydrate Chemical compound O.O=[Si]=O LRCFXGAMWKDGLA-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 150000007530 organic bases Chemical class 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 229960004029 silicic acid Drugs 0.000 abstract 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000011032 tourmaline Substances 0.000 abstract 1
- 229940070527 tourmaline Drugs 0.000 abstract 1
- 229910052613 tourmaline Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B7/00—Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/16—Oxides
- C30B29/18—Quartz
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/54—Organic compounds
- C30B29/56—Tartrates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Glass Compositions (AREA)
Abstract
<PICT:0643448/III/1> <PICT:0643448/III/2> <PICT:0643448/III/3> A monocrystalline body is made by mixing powdered silica, tourmaline, or Rochelle salt with a small proportion of a liquid capable of slightly dissolving the powder, compressing the mixture so that it behaves as a rigid body, and subjecting the compressed mixture to high-frequency vibrations. The vibrations are set up by an alternating electric field and/or by a source of supersonic oscillations. One frequency component is made equal to the natural mechanical vibration frequency of the compressed body. The process is preferably carried out at an elevated temperature below the melting point of the substance, and in the presence of a crystallization catalyst. Oriented growth may be superimposed upon a piezoelectric monocrystalline body, such as an oscillator plate, by means of the process; in this case a mixture of the finely-divided substance of the plate and the solvent, is packed around the plate, the combination is then compressed so that it behaves as a rigid body which is placed in an alternating electric field. Quartz, chalcedony, hydrated silica, or amorphous silica in the form of particles of 10 micron size is mixed with a small amount of water; and a small amount of a metallic hydroxide or of a strong organic base, is added as catalyst. The mixture is packed into a compartment, Fig. 1, consisting of glass or ceramic walls 11, with top and bottom electrode plates 1, 2. The temperature is raised to about 374 DEG C. by resistance heaters 14, pressure is applied to the top electrode by means of shaft 15, and an alternating electric field of frequency between 50,000 and 10,000,000 cycles per second, is maintained between the electrodes by oscillator A and conductors 19. In the modification shown in Fig. 6, electrodes 3 and 4 provide an inclined H.F. field through the mass, and the ends 18 are connected to a source of supersonic oscillations B (15 to 50 kilocycles/sec.). Fig. 8 shows the arrangement used to build up a quartz oscillator plate 23; it is packed in a mixture 22 of powdered silica, water and catalyst.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US643448XA | 1945-11-01 | 1945-11-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB643448A true GB643448A (en) | 1950-09-20 |
Family
ID=22055296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23158/46A Expired GB643448A (en) | 1945-11-01 | 1946-08-02 | Improvements in processes for producing piezo-electric crystals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB643448A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2657661A (en) * | 1952-01-14 | 1953-11-03 | United Fruit Co | Insulating hatchcover with inflatable gasket |
| US2928163A (en) * | 1955-08-11 | 1960-03-15 | Clevite Corp | Polarization of titanate ceramics |
| EP0693580A1 (en) * | 1994-07-18 | 1996-01-24 | Sumitomo Electric Industries, Ltd. | Oxide thin film having quartz crystal structure and process for producing the same |
| EP0716167A3 (en) * | 1994-12-05 | 1999-08-11 | Sumitomo Electric Industries, Ltd. | Single crystal quartz thin film and preparation thereof |
| EP0960961A1 (en) * | 1991-09-24 | 1999-12-01 | Gordian Holding Corporation | Method of making a quartz crystal having a particular resonant frequency |
| WO2004047193A1 (en) * | 2002-11-16 | 2004-06-03 | Key Sung Metal Co., Ltd. | Piezoelectric ceramics crystal-oriented under electric field and method of manufacturing the same |
-
1946
- 1946-08-02 GB GB23158/46A patent/GB643448A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2657661A (en) * | 1952-01-14 | 1953-11-03 | United Fruit Co | Insulating hatchcover with inflatable gasket |
| US2928163A (en) * | 1955-08-11 | 1960-03-15 | Clevite Corp | Polarization of titanate ceramics |
| EP0960961A1 (en) * | 1991-09-24 | 1999-12-01 | Gordian Holding Corporation | Method of making a quartz crystal having a particular resonant frequency |
| EP0693580A1 (en) * | 1994-07-18 | 1996-01-24 | Sumitomo Electric Industries, Ltd. | Oxide thin film having quartz crystal structure and process for producing the same |
| US5879811A (en) * | 1994-07-18 | 1999-03-09 | Sumitomo Electric Industries, Ltd. | Oxide thin film having quartz crystal structure |
| EP0716167A3 (en) * | 1994-12-05 | 1999-08-11 | Sumitomo Electric Industries, Ltd. | Single crystal quartz thin film and preparation thereof |
| WO2004047193A1 (en) * | 2002-11-16 | 2004-06-03 | Key Sung Metal Co., Ltd. | Piezoelectric ceramics crystal-oriented under electric field and method of manufacturing the same |
| US7467448B2 (en) | 2002-11-16 | 2008-12-23 | Key Sung Metal Co., Ltd. | Method of manufacturing a piezoelectric ceramic |
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