GB970865A - Improvements in and relating to electrical capacitors - Google Patents
Improvements in and relating to electrical capacitorsInfo
- Publication number
- GB970865A GB970865A GB4298960A GB4298960A GB970865A GB 970865 A GB970865 A GB 970865A GB 4298960 A GB4298960 A GB 4298960A GB 4298960 A GB4298960 A GB 4298960A GB 970865 A GB970865 A GB 970865A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pict
- metallic
- capacitor
- bell jar
- layers
- 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
- 239000003990 capacitor Substances 0.000 title abstract 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 abstract 6
- 238000001704 evaporation Methods 0.000 abstract 3
- 239000000758 substrate Substances 0.000 abstract 3
- 238000007743 anodising Methods 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 235000006408 oxalic acid Nutrition 0.000 abstract 2
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical compound CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000011255 nonaqueous electrolyte Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/50—Substrate holders
- C23C14/505—Substrate holders for rotation of the substrates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
<PICT:0970865/C6-C7/1> <PICT:0970865/C6-C7/2> <PICT:0970865/C6-C7/3> <PICT:0970865/C6-C7/4> A cylindrical capacitor, Fig. 1, comprises an insulating substrate 10, e.g. glass, and four metallic electrode layers 13, 15, 17, 19 formed successively by evaporation, and dielectric layers 14, 16, 18 formed successively by oxidizing the electrodes. Layers 13, 17 and 15, 19 are connected to lead wires 11, 12 respectively. A flat capacitor having electrodes 21, 23, 27, 30, dielectric layers 22, 26, 29 and electrode terminal extensions 24, 25, 28, 31 is shown in Fig. 3. The manufacturing process of such capacitors includes cleaning the glass substrate, e.g. by exposing it to a glow discharge, evaporating metal (preferably aluminium) on to the substrate at a pressure of about 10-5 mm. Hg. and a temperature of about 1000 DEG C. for not more than five minutes. The dielectric oxide film is produced anodically by using a non aqueous electrolyte (e.g. a mixture of oxalic acid and propanediol or ethylene glycol) or an electrolyte consisting only partially of water (e.g. a mixture of water and oxalic acid with propanediol or ethylene glycol. The anodizing voltage is between 10-45 volts and the time of the process from 10-20 minutes. Further metallic and dielectric layers are similarly formed. The metallic films are applied in a bell jar in which capacitor units 56 are rotatably mounted, heating coils 61, 62 in the bell jar melting the metal for evaporation, Figs. 4 and 5. The capacitors are supported in receptacles 55 which serve not only to rotate the capacitor units but also to mask that portion thereof on which the metallic film is not required. At their upper ends the units 56 pass through holes in a plate 58 and are held by spring clips in a further plate, Fig. 6 (not shown), lowered on to the plate 58, to remove them from the bell jar and transfer them to the anodizing bath. Reference has been directed by the Comptroller to Specification 863,596.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85926259A | 1959-12-14 | 1959-12-14 | |
| US3202A US3175137A (en) | 1960-01-18 | 1960-01-18 | Capacitor with metallized electrodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB970865A true GB970865A (en) | 1964-09-23 |
Family
ID=26671467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4298960A Expired GB970865A (en) | 1959-12-14 | 1960-12-14 | Improvements in and relating to electrical capacitors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB970865A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4508049A (en) * | 1978-11-02 | 1985-04-02 | Siemens Aktiengesellschaft | Method and a device for the production of electrical components, in particular laminated capacitors |
| US4842893A (en) * | 1983-12-19 | 1989-06-27 | Spectrum Control, Inc. | High speed process for coating substrates |
| US5018048A (en) * | 1983-12-19 | 1991-05-21 | Spectrum Control, Inc. | Miniaturized monolithic multi-layer capacitor and apparatus and method for making |
| US5032461A (en) * | 1983-12-19 | 1991-07-16 | Spectrum Control, Inc. | Method of making a multi-layered article |
| US5097800A (en) * | 1983-12-19 | 1992-03-24 | Spectrum Control, Inc. | High speed apparatus for forming capacitors |
| US5125138A (en) * | 1983-12-19 | 1992-06-30 | Spectrum Control, Inc. | Miniaturized monolithic multi-layer capacitor and apparatus and method for making same |
-
1960
- 1960-12-14 GB GB4298960A patent/GB970865A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4508049A (en) * | 1978-11-02 | 1985-04-02 | Siemens Aktiengesellschaft | Method and a device for the production of electrical components, in particular laminated capacitors |
| US4842893A (en) * | 1983-12-19 | 1989-06-27 | Spectrum Control, Inc. | High speed process for coating substrates |
| US5018048A (en) * | 1983-12-19 | 1991-05-21 | Spectrum Control, Inc. | Miniaturized monolithic multi-layer capacitor and apparatus and method for making |
| US5032461A (en) * | 1983-12-19 | 1991-07-16 | Spectrum Control, Inc. | Method of making a multi-layered article |
| US5097800A (en) * | 1983-12-19 | 1992-03-24 | Spectrum Control, Inc. | High speed apparatus for forming capacitors |
| US5125138A (en) * | 1983-12-19 | 1992-06-30 | Spectrum Control, Inc. | Miniaturized monolithic multi-layer capacitor and apparatus and method for making same |
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